Catalyst-free and solvent-free hydroboration of aldehydes

Green Chem., 2018, Advance Article
DOI: 10.1039/C8GC00042E, Communication

Hanna Stachowiak, Joanna Kazmierczak, Krzysztof Kucinski, Grzegorz Hreczycho
For the first time, a general method for catalyst-free and solvent-free hydroboration of various aldehydes has been developed

Catalyst-free and solvent-free hydroboration of aldehydes

Catalyst-free and solvent-free hydroboration of aldehydes

 

Hanna Stachowiak,^a  Joanna Kaźmierczak,^a  Krzysztof Kuciński^a  and  Grzegorz Hreczycho*^a 

 Author affiliations

*Corresponding authors

^aFaculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
E-mail: g.h@amu.edu.pl

Abstract

A simple catalyst-free and solvent-free method for the hydroboration of various aldehydes bearing a wide array of electron-withdrawing and electron-donating groups was developed. Unlike aldehydes, the addition of boranes to ketones is less efficient and is thus advantageous for the chemoselective reduction of the former ones. It is suggested that the described transformation proceeds with the formation of Lewis acid–base adducts, which facilitates further hydroboration.
4,4,5,5-tetramethyl-2-((4-methylbenzyl)oxy)-1,3,2-dioxaborolane (3b) [1] 4,4,5,5-tetramethyl-2-((4-methylbenzyl)oxy)-1,3,2-dioxaborolane was obtained as colorless oil in 97% yield.
1H NMR (400 MHz, CDCl3) δ (ppm) = 1.29 (s, 12H), 2.36 (s, 3H), 4.91 (s, 2H), 7.17 (d, J = 7.9 Hz, 2H), 7.27-7.30 (m, 2H).
13C NMR (101 MHz, CDCl3) δ (ppm) = 21.3, 24.7, 66.7, 83.0, 127.0, 127.2, 129.1, 129.3, 136.4, 137.1.
11B NMR (128 MHz, CDCl3) δ (ppm) = 22.5.
EA: C14H21BO3 (248.16): calcd.C 67.77; H 8.53; found C 67.66; H 8.47.
 
11B NMR (128 MHz, CDCl3) δ (ppm) = 22.5.

////////////hydroboration

http://pubs.rsc.org/en/Content/ArticleLanding/2018/GC/C8GC00042E?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FGC+%28RSC+-+Green+Chem.+latest+articles%29#!divAbstract

Guest blogger, Dr Pravin Patil, Aryl free radical mediated oxidative arylation of naphthoquinones using o-iodoxybenzoic acid and phenylhydrazines and its application towards synthesis of benzocarbazoledione

J. Org. Chem. 2014, 79 (5), 2331-2336 ; DOI: 10.1021/jo500131h


2-Phenyl-1,4-naphthoquinone 3a. 22 Following the general procedure, the crude product was purified over a silica gel column using a hexane/EtOAc mobile phase (9:1) to give a yellowish solid (140 mg, 60% yield): mp 107−109 °C; 1 H NMR (300 MHz, CDCl3) δ 8.18−8.10 (m, 2H), 7.86−7.75 (m, 2H), 7.56−7.48 (m, 5H), 7.07 (s, 1H); 13C NMR (75 MHz, CDCl3) δ 185.2, 185.1, 148.1, 135.2, 133.9 2-Phenyl-1,4-naphthoquinone 3a. 22 Following the general procedure, the crude product was purified over a silica gel column using a hexane/EtOAc mobile phase (9:1) to give a yellowish solid (140 mg, 60% yield): mp 107−109 °C; 1 H NMR (300 MHz, CDCl3) δ 8.18−8.10 (m, 2H), 7.86−7.75 (m, 2H), 7.56−7.48 (m, 5H), 7.07 (s, 1H); 13C NMR (75 MHz, CDCl3) δ 185.2, 185.1, 148.1, 135.2, 133.9

CONCLUSION

In conclusion, we demonstrated a new method for radical mediated arylation of naphthoquinones using the combination of IBX with arylhydrazines. It does not require necessity of transition metal catalysis and prefunctionalization on naphthoquinone moiety. The reactions occurred under mild conditions in open atmosphere. Further, both 2-hydroxy and 2-amino groups were found to be tolerated under optimized reaction conditions. This fact could be attributed to rapid reaction between IBX and phenyl hydrazine. A postulated radical mediated mechanism was supported by radical trapping experiments. Developed protocols were successfully extended towards an effective, short and high yielding synthesis of benzocarbazoledione. IBX mediated developed protocols for arylation could open a new field in quinone chemistry as well as in the development of new procedures for arylation of electron deficient molecules in near future

Aryl-Free Radical-Mediated Oxidative Arylation of Naphthoquinones Using o-Iodoxybenzoic Acid and Phenylhydrazines and Its Application toward the Synthesis of Benzocarbazoledione

Pravin Patil, Abhay Nimonkar, and Krishnacharya G. Akamanchi*

Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga, Mumbai 400019, India

J. Org. Chem., 2014, 79 (5), pp 2331–2336

DOI: 10.1021/jo500131h

Publication Date (Web): February 10, 2014

Copyright © 2014 American Chemical Society

*E-mail: kgap@rediffmail.com; kg.akamanchi@ictmumbai.edu.in.

http://pubs.acs.org/doi/suppl/10.1021/jo500131h

Abstract

Oxidative arylation of naphthoquinones has been developed through combination of o-iodoxybenzoic acid with arylhydrazines under mild conditions at open atmosphere. Arylated naphthoquinones with different electronic properties were obtained in moderate to good yields. The postulated radical mediated mechanism is supported by radical trapping experiments. Developed protocol for direct arylation of naphthoquinones has been extended toward short, high yielding, and an effective synthesis of antitumor–antibiotic precursor such as benzocarbazoledione.

ABOUT GUEST BLOGGER

Dr. Pravin C. Patil

Postdoctoral Research Associate at University of Louisville

Email, pravinchem@gmail.com

see…….http://oneorganichemistoneday.blogspot.in/2017/04/dr-pravin-patil.html

Dr. Pravin C Patil completed his B.Sc. (Chemistry) at ASC College Chopda (Jalgaon, Maharashtra, India) in 2001 and M.Sc. (Organic Chemistry) at SSVPS’S Science College Dhule in North Maharashtra University (Jalgaon, Maharashtra, India) in year 2003. After M.Sc. degree he was accepted for summer internship training program at Bhabha Atomic Research Center (BARC, Mumbai) in the laboratory of Prof. Subrata Chattopadhyay in Bio-organic Division. In 2003, Dr. Pravin joined to API Pharmaceutical bulk drug company, RPG Life Science (Navi Mumbai, Maharashtra, India) and worked there for two years. In 2005, he enrolled into Ph.D. (Chemistry) program at Institute of Chemical Technology (ICT), Matunga, Mumbai, aharashtra, under the supervision of Prof. K. G. Akamanchi in the department of Pharmaceutical Sciences and Technology.

After finishing Ph.D. in 2010, he joined to Pune (Maharashtra, India) based pharmaceutical industry, Lupin Research Park (LRP) in the department of process development. After spending two years at Lupin as a Research Scientist, he got an opportunity in June 2012 to pursue Postdoctoral studies at Hope College, Holland, MI, USA under the supervision of Prof. Moses Lee. During year 2012-13 he worked on total synthesis of achiral anticancer molecules Duocarmycin and its analogs. In 2014, he joined to Prof. Frederick Luzzio at the Department for Chemistry, University of Louisville, Louisville, KY, USA to pursue postdoctoral studies on NIH sponsored project “ Structure based design and synthesis of Peptidomimetics targeting P. gingivalis.

During his research experience, he has authored 23 international publications in peer reviewed journals and inventor for 4 patents.

Prof K. G. Akamanchi

Prof. K. G. Akamanchi Professor, Pharmaceutical Sciences and Technology Email ID : kg.akamanchi@ictmumbai.edu.in Reseach Area : Development of Novel Methodologies, Hypervalent Iodine Chemistry, Synthesis of drug and drug intermediates, Design and Synthesis of Potential bioactive molecules, Protein Isolation and Bioassay

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HMF in multicomponent reactions: utilization of 5-hydroxymethylfurfural (HMF) in the Biginelli reaction

HMF in multicomponent reactions: utilization of 5-hydroxymethylfurfural (HMF) in the Biginelli reaction

Green Chem., 2018, Advance Article
DOI: 10.1039/C7GC03425C, Paper

Weigang Fan, Yves Queneau, Florence Popowycz
The use of the renewable platform molecule 5-hydroxymethylfurfural (HMF) in the multi-component Biginelli reaction has been investigated.

HMF in multicomponent reactions: utilization of 5-hydroxymethylfurfural (HMF) in the Biginelli reaction

 

Weigang Fan,^a  Yves Queneau*^a  and  Florence Popowycz*^a 

http://pubs.rsc.org/en/Content/ArticleLanding/2018/GC/C7GC03425C?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FGC+%28RSC+-+Green+Chem.+latest+articles%29#!divAbstract

* Corresponding authors

^a Université de Lyon, INSA Lyon, ICBMS, Equipe Chimie Organique et Bioorganique, UMR 5246 CNRS, Université Lyon 1, CPE Lyon, Bâtiment Jules Verne, 20 Avenue Albert Einstein, F-69621 Villeurbanne Cedex, France
E-mail: yves.queneau@insa-lyon.fr, florence.popowycz@insa-lyon.fr

Abstract

The use of the renewable platform molecule 5-hydroxymethylfurfural (HMF) in the multi-component Biginelli reaction has been investigated. Multicomponent reactions (MCR) using HMF offer straightforward access to novel fine chemicals. However, the peculiar reactivity and lower stability of HMF have limited its use in such strategies. In this paper, we report our results on the use of HMF in 3-component Biginelli reactions, leading in one single step to a series of functionalized dihydropyrimidinones obtained in moderate to good yields, with a broad substrate scope of 1,3-dicarbonyl compounds and urea building blocks. This is the first report on the use of HMF in this reaction. The CH₂OH motif found in HMF provides useful functionalization for the target molecules, which cannot be offered by simpler aldehydes such as furfural.
5-Acetyl-4-[5’-(hydroxymethyl)furan-2’-yl]-6-methyl-3,4-dihydropyrimidin-2(1H)-one (4a):

 

Reaction time: 8 h; Global yield: 86%; (78% yield after simple filtration + additional 8% yield after purification of the filtrate by column chromatography).
1H NMR (400 MHz, DMSO-d6) δ 9.22 (d, 1H, J = 1.2 Hz, H1), 7.88 (dd, 1H, J = 3.4, 1.2 Hz, H3), 6.16 (d, 1H, J = 3.1 Hz, H4’), 6.03 (d, 1H, J = 3.1 Hz, H3’), 5.27 (d, 1H, J = 3.4 Hz, H4), 5.18 (t, 1H, J = 5.6 Hz, OH), 4.33 (d, 2H, J = 5.6 Hz, CH2), 2.25 (s, 3H, CH3-C6), 2.17 (s, 3H, CH3CO).
13C NMR (100 MHz, DMSO-d6) δ 193.9 (COCH3), 155.1, 154.9 (C2’, C5’), 152.4 (C2), 149.0 (C6), 107.7 (C4’), 107.1 (C5), 106.3 (C3’), 55.7 (CH2OH), 47.9 (C4), 30.0 (CH3CO), 19.0 (CH3-C6).
HRMS (ESI) m/z: Calcd for [M+Na]+ C12H14N2NaO4 273.0846; Found 273.0850.

Weigang Fan

Research experience

• Sep 2015–Mar 2017

  Doctorant

  Institut National des Sciences Appliquées de Lyon · Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires (ICBMS - UMR 5246)
  France · Lyon

 

 

Florence POPOWYCZ

Université de Lyon, INSA Lyon, ICBMS, Equipe Chimie Organique et Bioorganique, UMR 5246 CNRS, Université Lyon 1, CPE Lyon, Bâtiment Jules Verne, 20 Avenue Albert Einstein, F-69621 Villeurbanne Cedex, France
E-mail:  florence.popowycz@insa-lyon.fr

 

 

 

Yves QUENEAU

CNRS Research Director chez ICBMS INSA Lyon Univ Lyon - Carbohydrate Chemistry

ICBMS INSA Lyon University of Lyon

 

Université de Lyon, INSA Lyon, ICBMS, Equipe Chimie Organique et Bioorganique, UMR 5246 CNRS, Université Lyon 1, CPE Lyon, Bâtiment Jules Verne, 20 Avenue Albert Einstein, F-69621 Villeurbanne Cedex, France
E-mail: yves.queneau@insa-lyon.fr,

///////////////HMF, multicomponent reactions,  5-hydroxymethylfurfural, Biginelli reaction

2073844-77-4

C₂₄ S_{12, 673.04}

Coroneno[1,​12-​cd:2,​3-​c'd':4,​5-​c''d'':6,​7-​c'''d''':8,​9-​c''''d'''':10,​11-​c'''''d''''']​hexakis[1,​2]​dithiole

A persulfurated coronene, a molecule dubbed a “sulflower” for its resemblance to a sunflower, bloomed this year. It’s the first fully sulfur-substituted polycyclic aromatic hydrocarbon and only the second member of a new class of circular heterocyclic carbon sulfide compounds, after the synthesis of octathio[8]circulene a decade ago.

Chemists hope to create other class members, including the simplest one, persulfurated benzene, for use in battery cathodes and other electronic materials.

A team led by Xinliang Feng of Dresden University of Technology and Klaus Müllen of the Max Planck Institute for Polymer Research created the sulflower (J. Am. Chem. Soc. 2017, DOI: 10.1021/jacs.6b12630).

http://pubs.acs.org/doi/abs/10.1021/jacs.6b12630

Synthesis of persulfuratedcoronene (5, PSC)

5 (82 mg) as dark red solid in 61% yield. HR-MS (HR-MALDI-TOF) m/z: Calcd. for C24S12: 671.6629; Found 671.6648 [M]+; Elem. Anal. calcd. for C24S12: C, 42.83; S, 57.17. Found: C, 42.87; S, 57.13.

Persulfurated Coronene: A New Generation of “Sulflower”

Renhao Dong^†, Martin Pfeffermann^§, Dmitry Skidin^‡, Faxing Wang^†, Yubin Fu^†, Akimitsu Narita^§, Matteo Tommasini^∥, Francesca Moresco^‡ , Gianaurelio Cuniberti^‡ , Reinhard Berger^†, Klaus Müllen^*§ , and Xinliang Feng^*†

^† Department of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden, Germany

^§ Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

^‡ Institute for Materials Science, Max Bergmann Center of Biomaterials, and Center for Advancing Electronics Dresden, TU Dresden, 01069 Dresden, Germany

^∥ Dipartimento di Chimica, Materiali ed Ingegneria Chimica ‘G. Natta’, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy

J. Am. Chem. Soc., 2017, 139 (6), pp 2168–2171

DOI: 10.1021/jacs.6b12630

Publication Date (Web): January 27, 2017

Copyright © 2017 American Chemical Society

*muellen@mpip-mainz.mpg.de, *xinliang.feng@tu-dresden.de

We report the first synthesis of a persulfurated polycyclic aromatic hydrocarbon (PAH) as a next-generation “sulflower.” In this novel PAH, disulfide units establish an all-sulfur periphery around a coronene core. The structure, electronic properties, and redox behavior were investigated by microscopic, spectroscopic and electrochemical methods and supported by density functional theory. The sulfur-rich character of persulfurated coronene renders it a promising cathode material for lithium–sulfur batteries, displaying a high capacity of 520 mAh g^–1 after 120 cycles at 0.6 C with a high-capacity retention of 90%

Renhao Dong

Research Group Leader

Renhao received his PhD in Physical Chemistry from Shandong University in 2013. Since 01/2017, he is a research group leader at the Chair for Molecular Functional Materials in TUD. His current research interest focuses on synthesis of organic 2D crystals (2D polymers/COFs/MOFs) and their applications in electronics and energy technology.

Contact

Phone: +49 – 351 / 463-40401 or -34932
Email: renhao.dong@tu-dresden.de

Prof. Xinliang Feng

Work Biography:

This is a professorship in the context of the cluster of excellence cfaed.

Xinliang Feng received his Bachelor’s degree in analytic chemistry in 2001 and Master’s degree in organic chemistry in 2004. Then he joined Prof. Klaus Müllen's group at the Max Planck Institute for Polymer Research for PhD thesis, where he obtained his PhD degree in April 2008. In December 2007 he was appointed as a group leader at the Max-Planck Institute for Polymer Research and in 2012 he became a distinguished group leader at the Max-Planck Institute for Polymer Research.

His current scientific interests include graphene, two-dimensional nanomaterials, organic conjugated materials, and carbon-rich molecules and materials for electronic and energy-related applications. He has published more than 370 research articles which have attracted more than 25000 citations with H-index of 75.

He has been awarded several prestigious prizes such as IUPAC Prize for Young Chemists (2009), Finalist of 3rd European Young Chemist Award, European Research Council (ERC) Starting Grant Award (2012), Journal of Materials Chemistry Lectureship Award (2013), ChemComm Emerging Investigator Lectureship (2014), Highly Cited Researcher (Thomson Reuters, 2014, 2015 and 2016), Fellow of the Royal Society of Chemistry (FRSC, 2014). He is an Advisory Board Member for Advanced Materials, Journal of Materials Chemistry A, ChemNanoMat, Energy Storage Materials, Small Methods and Chemistry -An Asian Journal. He is also one of the Deputy Leaders for European communitys pilot project Graphene Flagship, Head of ESF Young Research Group "Graphene Center Dresden", and Working Package Leader of WP Functional Foams & Coatings of GRAPHENE FLAGSHIP.

Academic Employment

• 12/2007-12/2012: Group Leader, Max Planck Institute for Polymer Research in Mainz, Germany
• 06/2010: Director of the Institute of Advanced Organic Materials, Shanghai Jiao Tong University
• 03/2011: Distinguished Adjunct Professorship in Shanghai Jiao Tong University, Chin
• 12/2012-07/2014: Distinguished Group Leader, Max Planck Institute for Polymer Research in Mainz, Germany
• 08/2014: W3 Chair Professor, Technische Universität Dresden, Germany

Honors and Duties

• Marie Currie Fellowship (2005-2006)
• Chinese Government Award for Outstanding Self-financed Students (2008)
• IUPAC Prize for Young Chemists (2009)
• Finalist of 3rd European Young Chemist Award (2010)
• ISE (International Society of Electrochemistry) Young Investigator Award (2011)
• Adjunct Professorship, China University of Geosciences (Wuhan) (2011)
• Deputy Leader of one of the ten European representatives of the European community’s pilot project GRAPHENE FLAGSHIP (2012)
• EU FET Young Explorer (2012)
• ERC Starting Grant Award (2012)
• Advisory Board Member for Advanced Materials (2013)
• Journal of Materials Chemistry Lectureship Award (2013)
• Advisory Board Member for Journal of Materials Chemistry A (2014)
• Editorial Board Member of Chemistry - An Asian Journal (2014)
• ChemComm Emerging Investigator Lectureship (2014)
• Highly Cited Researcher (Thomson Reuters, 2014)
• Fellow of the Royal Society of Chemistry (2014)
• Highly Cited Researcher (Chemistry and Materials Science) (2015)
• International Advisory Board of Energy Storage Materials (2015)
• International Advisory Board of ChemNanoMat (2015)
• Highly Cited Researcher (Chemistry and Materials Science, Thomson Reuters) (2016)
• Head of ESF Young Research Group “Graphene Center Dresden” (2016)
• Working Package Leader of WP Functional Foams & Coatings of GRAPHENE FLAGSHIP (2016)
• International Advisory Board of Small Methods (2016)
• Path Leader of 2.5D path within the cluster of excellence CFAED (2016)
• ERC Proof-of-Concept Project Award (2017)
• Small Young Innovator Award (2017)
• Hamburg Science Award (2017)

Referee for:

Nature, Science, Nature Materials, Nature Nanotechnology, Nature Chemistry, Journal of the American Chemical Society, Angewandte Chemie International Edition, Nano Letters, Advanced Materials, Chemical Society Reviews, ACS Nano, Small, Chemical Communications, Chemistry of Materials, Organic Letters, Journal of the Organic Chemistry, Chemistry - A European Journal, ChemSusChem, ChemPhysChem, Macromolecular Rapid Communications, Journal of Material Chemistry, New Journal of Chemistry, Chemistry - An Asian Journal, ACS Applied Materials & Interfaces, Energy & Environmental Science, Organic Electronics and so on

Referee for research grants in NSF, US Department of Energy, ESF, ISF and Fondazione Cariparo and Fondazione CariModena.

Publications

Click to open publications list

Contact (Secretariat)

Phone: +49 351 / 463-43251
Fax: +49 351 / 463-43268
Email: sabine.strecker@tu-dresden.de

Klaus Müllen
Max-Planck-Institute for Polymer Research, Mainz, 55128, Germany

Research into energy technologies and electronic devices is strongly governed by the available materials. We introduce a synthetic route to graphenes which is based upon the cyclodehydrogenation (“graphitization”) of well-defined dendritic (3D) polyphenylene precursors. This approach is superior to physical methods of graphene formation such as chemical vapour deposition or exfoliation in terms of its (i) size and shape control, (ii) structural perfection, and (iii) processability (solution, melt, and even gas phase). The most convincing case is the synthesis of graphene nanoribbons under surface immobilization and in-situ control by scanning tunnelling microscopy.
Columnar superstructures assembled from these nanographene discs serve as charge transport channels in electronic devices. Field-effect transistors (FETs), solar cells, and sensors are described as examples.
Upon pyrolysis in confining geometries or “carbomesophases”, the above carbon-rich 2D- and 3D- macromolecules transform into unprecedented carbon materials and their carbon-metal nanocomposites. Exciting applications are shown for energy technologies such as battery cells and fuel cells. In the latter case, nitrogen-containing graphenes serve as catalysts for oxygen reduction whose efficiency is superior to that of platinum.

Müllen, K., Rabe, J.R., Acc. Chem. Res. 2008, 41, (4), 511-520;
Wang, X., Zhi, L., Müllen, K. Nano. Lett. 2008, 8, 323-327;
Feng, X.; Chandrasekhar, N.; Su, H. B.; Müllen, K., Nano. Lett. 2008, 8, 4259.;
Pang, S.; Tsao, H. N.; Feng, X.; Müllen, K., Adv. Mater. 2009, 31, 3488;
Feng, X., Marcon, V., Pisula, W., Hansen, M.R., Kirkpatrick, I., Müllen, K., Nature Mater. 2009, 8, 421;
Cai, J., Ruffieux, P., Jaafar, R., Bieri, M., Braun, T., Blankenburg, S., Muoth, M., Seitsonen, A. P., Saleh, M., Feng, X., Müllen, K., Fasel, R., Nature 2010, 466, 470-473;
Yang, S., Feng, X., Zhi, L., Cao, Q., Maier, J., Müllen, K., Adv. Mater. 2010, 22, 838; Liu, R., Wu, D., Feng, X., Müllen, K., Angew. Chem. Int. Ed. 2010, 49, 2565;
Käfer, D., Bashir, A., Dou, X., Witte, G., Müllen, K., Wöll, C., Adv. Mater. 2010, 22, 384;
Diez-Perez, I., Li, Z., Hihath, J., Li, J., Zhang, C., X., Zang, L., Dai, Y., Heng, X., Müllen, K., Tao, N. J. Nature Commun. 2010, DOI: 10.1038.

Prof. Dr. Klaus Müllen
joined the Max-Planck-Society in 1989 as one of the directors of the Max-Planck Institute for Polymer Research. He obtained a Diplom-Chemiker degree at the University of Cologne in 1969 after work with Professor E. Vogel. His Ph.D. degree was granted by the University of Basel, Switzerland, in 1972 where he undertook research with Professor F. Gerson on twisted pi-systems and EPR spectroscopic properties of the corresponding radical anions. In 1972 he joined the group of Professor J.F.M. Oth at the Swiss Federal Institute of Technology in Zürich where he worked in the field of dynamic NMR spectroscopy and electrochemistry. He received his habilitation from the ETH Zürich in 1977 and was appointed Privatdozent. In 1979 he became a Professor in the Department of Organic Chemistry, University of Cologne, and accepted an offer of a chair in Organic Chemistry at the University of Mainz in 1983. He received a call to the University of Göttingen in 1988.

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S1Sc6c8c1c9SSc%10c2SSc%13c2c%11c4c3c%13SSc3c%12SSc7c%12c4c(c5c7SSc56)c8c%11c9%10

http://pubs.acs.org/doi/abs/10.1021/jacs.6b12630

https://cen.acs.org/articles/95/i49/molecules-of-the-year-2017.html?utm_source=Twitter&utm_medium=Social&utm_campaign=CEN&hootPostID=ea1deb5464b6231122901a3321f4ff5e

2073844-77-4

C₂₄ S_{12, 673.04}

Coroneno[1,​12-​cd:2,​3-​c'd':4,​5-​c''d'':6,​7-​c'''d''':8,​9-​c''''d'''':10,​11-​c'''''d''''']​hexakis[1,​2]​dithiole

A persulfurated coronene, a molecule dubbed a “sulflower” for its resemblance to a sunflower, bloomed this year. It’s the first fully sulfur-substituted polycyclic aromatic hydrocarbon and only the second member of a new class of circular heterocyclic carbon sulfide compounds, after the synthesis of octathio[8]circulene a decade ago.

Chemists hope to create other class members, including the simplest one, persulfurated benzene, for use in battery cathodes and other electronic materials.

A team led by Xinliang Feng of Dresden University of Technology and Klaus Müllen of the Max Planck Institute for Polymer Research created the sulflower (J. Am. Chem. Soc. 2017, DOI: 10.1021/jacs.6b12630).

http://pubs.acs.org/doi/abs/10.1021/jacs.6b12630

Synthesis of persulfuratedcoronene (5, PSC)

5 (82 mg) as dark red solid in 61% yield. HR-MS (HR-MALDI-TOF) m/z: Calcd. for C24S12: 671.6629; Found 671.6648 [M]+; Elem. Anal. calcd. for C24S12: C, 42.83; S, 57.17. Found: C, 42.87; S, 57.13.

Persulfurated Coronene: A New Generation of “Sulflower”

Renhao Dong^†, Martin Pfeffermann^§, Dmitry Skidin^‡, Faxing Wang^†, Yubin Fu^†, Akimitsu Narita^§, Matteo Tommasini^∥, Francesca Moresco^‡ , Gianaurelio Cuniberti^‡ , Reinhard Berger^†, Klaus Müllen^*§ , and Xinliang Feng^*†

^† Department of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden, Germany

^§ Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

^‡ Institute for Materials Science, Max Bergmann Center of Biomaterials, and Center for Advancing Electronics Dresden, TU Dresden, 01069 Dresden, Germany

^∥ Dipartimento di Chimica, Materiali ed Ingegneria Chimica ‘G. Natta’, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy

J. Am. Chem. Soc., 2017, 139 (6), pp 2168–2171

DOI: 10.1021/jacs.6b12630

Publication Date (Web): January 27, 2017

Copyright © 2017 American Chemical Society

*muellen@mpip-mainz.mpg.de, *xinliang.feng@tu-dresden.de

We report the first synthesis of a persulfurated polycyclic aromatic hydrocarbon (PAH) as a next-generation “sulflower.” In this novel PAH, disulfide units establish an all-sulfur periphery around a coronene core. The structure, electronic properties, and redox behavior were investigated by microscopic, spectroscopic and electrochemical methods and supported by density functional theory. The sulfur-rich character of persulfurated coronene renders it a promising cathode material for lithium–sulfur batteries, displaying a high capacity of 520 mAh g^–1 after 120 cycles at 0.6 C with a high-capacity retention of 90%

Renhao Dong

Research Group Leader

Renhao received his PhD in Physical Chemistry from Shandong University in 2013. Since 01/2017, he is a research group leader at the Chair for Molecular Functional Materials in TUD. His current research interest focuses on synthesis of organic 2D crystals (2D polymers/COFs/MOFs) and their applications in electronics and energy technology.

Contact

Phone: +49 – 351 / 463-40401 or -34932
Email: renhao.dong@tu-dresden.de

Prof. Xinliang Feng

Work Biography:

This is a professorship in the context of the cluster of excellence cfaed.

Xinliang Feng received his Bachelor’s degree in analytic chemistry in 2001 and Master’s degree in organic chemistry in 2004. Then he joined Prof. Klaus Müllen's group at the Max Planck Institute for Polymer Research for PhD thesis, where he obtained his PhD degree in April 2008. In December 2007 he was appointed as a group leader at the Max-Planck Institute for Polymer Research and in 2012 he became a distinguished group leader at the Max-Planck Institute for Polymer Research.

His current scientific interests include graphene, two-dimensional nanomaterials, organic conjugated materials, and carbon-rich molecules and materials for electronic and energy-related applications. He has published more than 370 research articles which have attracted more than 25000 citations with H-index of 75.

He has been awarded several prestigious prizes such as IUPAC Prize for Young Chemists (2009), Finalist of 3rd European Young Chemist Award, European Research Council (ERC) Starting Grant Award (2012), Journal of Materials Chemistry Lectureship Award (2013), ChemComm Emerging Investigator Lectureship (2014), Highly Cited Researcher (Thomson Reuters, 2014, 2015 and 2016), Fellow of the Royal Society of Chemistry (FRSC, 2014). He is an Advisory Board Member for Advanced Materials, Journal of Materials Chemistry A, ChemNanoMat, Energy Storage Materials, Small Methods and Chemistry -An Asian Journal. He is also one of the Deputy Leaders for European communitys pilot project Graphene Flagship, Head of ESF Young Research Group "Graphene Center Dresden", and Working Package Leader of WP Functional Foams & Coatings of GRAPHENE FLAGSHIP.

Academic Employment

• 12/2007-12/2012: Group Leader, Max Planck Institute for Polymer Research in Mainz, Germany
• 06/2010: Director of the Institute of Advanced Organic Materials, Shanghai Jiao Tong University
• 03/2011: Distinguished Adjunct Professorship in Shanghai Jiao Tong University, Chin
• 12/2012-07/2014: Distinguished Group Leader, Max Planck Institute for Polymer Research in Mainz, Germany
• 08/2014: W3 Chair Professor, Technische Universität Dresden, Germany

Honors and Duties

• Marie Currie Fellowship (2005-2006)
• Chinese Government Award for Outstanding Self-financed Students (2008)
• IUPAC Prize for Young Chemists (2009)
• Finalist of 3rd European Young Chemist Award (2010)
• ISE (International Society of Electrochemistry) Young Investigator Award (2011)
• Adjunct Professorship, China University of Geosciences (Wuhan) (2011)
• Deputy Leader of one of the ten European representatives of the European community’s pilot project GRAPHENE FLAGSHIP (2012)
• EU FET Young Explorer (2012)
• ERC Starting Grant Award (2012)
• Advisory Board Member for Advanced Materials (2013)
• Journal of Materials Chemistry Lectureship Award (2013)
• Advisory Board Member for Journal of Materials Chemistry A (2014)
• Editorial Board Member of Chemistry - An Asian Journal (2014)
• ChemComm Emerging Investigator Lectureship (2014)
• Highly Cited Researcher (Thomson Reuters, 2014)
• Fellow of the Royal Society of Chemistry (2014)
• Highly Cited Researcher (Chemistry and Materials Science) (2015)
• International Advisory Board of Energy Storage Materials (2015)
• International Advisory Board of ChemNanoMat (2015)
• Highly Cited Researcher (Chemistry and Materials Science, Thomson Reuters) (2016)
• Head of ESF Young Research Group “Graphene Center Dresden” (2016)
• Working Package Leader of WP Functional Foams & Coatings of GRAPHENE FLAGSHIP (2016)
• International Advisory Board of Small Methods (2016)
• Path Leader of 2.5D path within the cluster of excellence CFAED (2016)
• ERC Proof-of-Concept Project Award (2017)
• Small Young Innovator Award (2017)
• Hamburg Science Award (2017)

Referee for:

Nature, Science, Nature Materials, Nature Nanotechnology, Nature Chemistry, Journal of the American Chemical Society, Angewandte Chemie International Edition, Nano Letters, Advanced Materials, Chemical Society Reviews, ACS Nano, Small, Chemical Communications, Chemistry of Materials, Organic Letters, Journal of the Organic Chemistry, Chemistry - A European Journal, ChemSusChem, ChemPhysChem, Macromolecular Rapid Communications, Journal of Material Chemistry, New Journal of Chemistry, Chemistry - An Asian Journal, ACS Applied Materials & Interfaces, Energy & Environmental Science, Organic Electronics and so on

Referee for research grants in NSF, US Department of Energy, ESF, ISF and Fondazione Cariparo and Fondazione CariModena.

Publications

Click to open publications list

Contact (Secretariat)

Phone: +49 351 / 463-43251
Fax: +49 351 / 463-43268
Email: sabine.strecker@tu-dresden.de

Klaus Müllen
Max-Planck-Institute for Polymer Research, Mainz, 55128, Germany

Research into energy technologies and electronic devices is strongly governed by the available materials. We introduce a synthetic route to graphenes which is based upon the cyclodehydrogenation (“graphitization”) of well-defined dendritic (3D) polyphenylene precursors. This approach is superior to physical methods of graphene formation such as chemical vapour deposition or exfoliation in terms of its (i) size and shape control, (ii) structural perfection, and (iii) processability (solution, melt, and even gas phase). The most convincing case is the synthesis of graphene nanoribbons under surface immobilization and in-situ control by scanning tunnelling microscopy.
Columnar superstructures assembled from these nanographene discs serve as charge transport channels in electronic devices. Field-effect transistors (FETs), solar cells, and sensors are described as examples.
Upon pyrolysis in confining geometries or “carbomesophases”, the above carbon-rich 2D- and 3D- macromolecules transform into unprecedented carbon materials and their carbon-metal nanocomposites. Exciting applications are shown for energy technologies such as battery cells and fuel cells. In the latter case, nitrogen-containing graphenes serve as catalysts for oxygen reduction whose efficiency is superior to that of platinum.

Müllen, K., Rabe, J.R., Acc. Chem. Res. 2008, 41, (4), 511-520;
Wang, X., Zhi, L., Müllen, K. Nano. Lett. 2008, 8, 323-327;
Feng, X.; Chandrasekhar, N.; Su, H. B.; Müllen, K., Nano. Lett. 2008, 8, 4259.;
Pang, S.; Tsao, H. N.; Feng, X.; Müllen, K., Adv. Mater. 2009, 31, 3488;
Feng, X., Marcon, V., Pisula, W., Hansen, M.R., Kirkpatrick, I., Müllen, K., Nature Mater. 2009, 8, 421;
Cai, J., Ruffieux, P., Jaafar, R., Bieri, M., Braun, T., Blankenburg, S., Muoth, M., Seitsonen, A. P., Saleh, M., Feng, X., Müllen, K., Fasel, R., Nature 2010, 466, 470-473;
Yang, S., Feng, X., Zhi, L., Cao, Q., Maier, J., Müllen, K., Adv. Mater. 2010, 22, 838; Liu, R., Wu, D., Feng, X., Müllen, K., Angew. Chem. Int. Ed. 2010, 49, 2565;
Käfer, D., Bashir, A., Dou, X., Witte, G., Müllen, K., Wöll, C., Adv. Mater. 2010, 22, 384;
Diez-Perez, I., Li, Z., Hihath, J., Li, J., Zhang, C., X., Zang, L., Dai, Y., Heng, X., Müllen, K., Tao, N. J. Nature Commun. 2010, DOI: 10.1038.

Prof. Dr. Klaus Müllen
joined the Max-Planck-Society in 1989 as one of the directors of the Max-Planck Institute for Polymer Research. He obtained a Diplom-Chemiker degree at the University of Cologne in 1969 after work with Professor E. Vogel. His Ph.D. degree was granted by the University of Basel, Switzerland, in 1972 where he undertook research with Professor F. Gerson on twisted pi-systems and EPR spectroscopic properties of the corresponding radical anions. In 1972 he joined the group of Professor J.F.M. Oth at the Swiss Federal Institute of Technology in Zürich where he worked in the field of dynamic NMR spectroscopy and electrochemistry. He received his habilitation from the ETH Zürich in 1977 and was appointed Privatdozent. In 1979 he became a Professor in the Department of Organic Chemistry, University of Cologne, and accepted an offer of a chair in Organic Chemistry at the University of Mainz in 1983. He received a call to the University of Göttingen in 1988.

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http://pubs.acs.org/doi/abs/10.1021/jacs.6b12630

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