.beta.-Aminocinnamonitriles as potential antiinflammatory agents
作者:S. A. Lang、E. Cohen
DOI:10.1021/jm00238a027
日期:1975.4
A number of beta-aminocinnamonitriles have been prepared by the reaction of salts of acetonitrile and propionitrile with benzonitrile. These materials were evaluated in the carrageenan antiinflammatory screen in Royal Hart, Wistar strain rats. Despite good weight gains in the parent molecule, beta-aminocinnamonitrile (1), only marginal activity was found in related compounds and some possible "metabolites
It takes two to TangPhos: β‐Amino acrylonitriles can be readily prepared from acetonitriles. Both of the E/Z isomers undergo hydrogenation with excellent enantioselectivity by using the Rh–TangPhos (TangPhos=1,1′‐di‐tert‐butyl‐(2,2′)‐diphospholane) catalyst system. The products, chiral β‐amino nitriles, are valuable chiral building blocks for many drugs.
Thermal stability of vinyl chloride polymer is improved by use of a compound of the formula ##EQU1## wherein R.sub.1 is aryl or lower alkyl-substituted aryl; R.sub.2 is hydrogen or lower alkyl; n is 1 or 2; and R.sub.3 is hydrogen or lower alkyl when n is 1 and is alkylene of 1 to 4 carbon atoms or thiodiethylene when n is 2, alone or in combination with a divalent metal salt of a fatty acid of 12-20 carbon atoms.
Rhodium-catalyzed asymmetric hydrogenation of β-acetylamino acrylonitriles
作者:Miaofeng Ma、Guohua Hou、Junru Wang、Xumu Zhang
DOI:10.1016/j.tetasy.2011.01.023
日期:2011.3
The rhodium-catalyzed asymmetric hydrogenation of beta-acetylamino acrylonitriles was investigated by using monophosphine and bisphosphine ligands. It was found that an Rh-QuinoxP* complex exhibited high enantioselectivities for beta-aryl substituted beta-acetylamino acrylonitriles and the Rh-JosiPhos CyPF-t-Bu complex was proven to be effective for the hydrogenation of tetrasubstituted olefins from cyclic beta-acetylamino acrylonitriles. (C) 2011 Elsevier Ltd. All rights reserved.