New technique can tell left from right even at low concentrations
Organic Synthesis International by Dr Anthony Melvin Crasto Ph.D, Worlddrugtracker, Million hits on google on all sites, One lakh connections worldwide. Pushing boundaries.Interaction site for Organic chemists worldwide, Mail me at amcrasto@gmail.com if you like me
Pages
- Home
- THESIS
- orgsyn.org site
- Chemspider synthetic pages
- ABOUT ME
- DISCLAIMER
- Montelukast and similar drugs
- Glitazar and glitazone series
- ABAN SERIES
- melteon series
- USEFUL LINKS
- LITERATURE SEARCH
- DIPINE SERIES
- International spaces
- GLIPTIN SERIES 2/2
- Atom Economy (AE), Reaction Mass Efficiency (RME) ...
Monday 27 May 2013
Microwaves show their hand
Friday 24 May 2013
A new method for producing clean hydrogen
|
Duke University
engineers have developed a novel method for producing clean hydrogen, which
could prove essential to weaning society off of fossil fuels and their
environmental implications. While hydrogen is ubiquitous in the environment,
producing and collecting molecular hydrogen for transportation and industrial
uses is expensive and complicated. Just as importantly, a byproduct of most …
more…
|
Thursday 23 May 2013
World Drug Tracker: Scientists sequence genome of ‘sacred lotus,’ may ...
World Drug Tracker: Scientists sequence genome of ‘sacred lotus,’ may ...: Scientists sequence genome of ‘sacred lotus,’ may hold anti-aging secrets A team of 70 scientists from the U.S., China, Austral...
One-Pot Method for Regioselective Bromination and Sequential Carbon–Carbon Bond-Forming Reactions of Allylic Alcohol Derivatives
One-Pot Method for Regioselective Bromination and Sequential Carbon–Carbon Bond-Forming Reactions of Allylic Alcohol Derivatives
European Journal of Organic Chemistry Noriki Kutsumura, Yusuke Matsubara, Kentaro Niwa, Ai Ito and Takao Saito
DOI: 10.1002/ejoc.201300173
DOI: 10.1002/ejoc.201300173
Di- or trisubstituted olefins were synthesized in high yields with excellent regio- and cis–trans selectivities in one-pot reactions, including a regioselective DBU-promoted trans HBr elimination. This one-pot methodology could become a straightforward transformation of “straight” alkenes into “Y-shaped” alkenes.
|
An efficient one-pot method for the regioselective bromination of allylic alcohol derivatives (two-step reaction sequence) followed by Sonogashira, Negishi, or Suzuki–Miyaura coupling reactions in the same reaction vessel (three-step reaction sequence) has been developed. The key reaction in these one-pot systems is the regioselective DBU-promoted trans HBr elimination of vicinal dibromides bearing an adjacent O-functional group.
Synthetic Uses of Ammonia in Transition-Metal Catalysis
European Journal of Organic Chemistry
DOI: 10.1002/ejoc.201300164
Although ammonia (NH3) is a cheap, abundant, and readily available nitrogen source, it has rarely been used in transition-metal catalysis, due to several obstacles. However, significant advances in the metal-mediated utilization of ammonia have been made recently. This review presents the most recent examples in metal-mediated amination and other relevant reactions with ammonia or ammonium salts.
|
Sunday 19 May 2013
Saturday 18 May 2013
Subscribe to:
Posts (Atom)