Sterically Demanding Oxidative Amidation of α-Substituted Malononitriles with Amines Using O<sub>2</sub>
作者:Jing Li、Martin J. Lear、Yujiro Hayashi
DOI:10.1002/anie.201603399
日期:2016.7.25
An efficient amidation method between readily available 1,1-dicyanoalkanes and either chiral or nonchiral amines was realized simply with molecular oxygen and a carbonate base. This oxidative protocol can be applied to both sterically and electronically challenging substrates in a highly chemoselective, practical, and rapid manner. The use of cyclopropyl and thioether substrates support the radical
Rhodium-Catalyzed Intermolecular Chelation Controlled Alkene and Alkyne Hydroacylation: Synthetic Scope of β-<i>S</i>-Substituted Aldehyde Substrates
作者:Michael C. Willis、Helen E. Randell-Sly、Robert L. Woodward、Steven J. McNally、Gordon S. Currie
DOI:10.1021/jo060582o
日期:2006.7.1
The use of β-S-substituted aldehydes in rhodium-catalyzed intermolecularhydroacylation reactions is reported. Aldehydes substituted with either sulfide or thioacetal groups undergo efficient hydroacylation with a variety of electron-poor alkenes, such as enoates, in Stetter-like processes and with both electron-poor and neutral alkynes. In general, the reactions with electron-poor alkenes demonstrate
Rhodium-Catalyzed Reductive Aldol Reactions Using Aldehydes as the Stoichiometric Reductants
作者:Michael C. Willis、Robert L. Woodward
DOI:10.1021/ja056130v
日期:2005.12.1
the addition of [Rh(dppe)]ClO4 to beta-sulfide-substituted aldehydes, can function as the stoichiometricreductants in reductive aldol processes. Unsaturated nitriles, esters, and ketones can be used as enolate equivalents, and a variety of simple alpha- and beta-substituted aldehydes can be employed. The use of a second, more electrophilic, aldehyde allows three-component reactions to be performed
Nouvelle méthode d'identification de thioalcools volatils par chromatographie sur papier
作者:A. Jacot-Guillarmod、P. Ceschini
DOI:10.1002/hlca.19590420310
日期:——
On dćrit une méthoded'identificationdethioalcoolsvolatilsparchromatographiesurpapier. La technique consiste dans l'analyse des dinitro-2,4-phényl-hydrazones des alcoylmercapto-3-propanals, formés par l'addition de ces thioalcools à l'acroléine.
Method and compounds for diagnosing coronary artery disease
申请人:Gensia, Inc.
公开号:US05775329A1
公开(公告)日:1998-07-07
The present invention relates generally to methods of diagnosis, evaluation and treatment of coronary artery disease in mammals using substituted catecholamines and compounds therefore. It also relates to the preparation, use and administration of these compounds which are useful in the diagnosis, evaluation and treatment of coronary artery disease by means of a feedback controlled drug delivery system that delivers exercise simulating agents which are capable of eliciting acute responses similar to those elicited by aerobic exercise.