ADDITION OF ACETONITRILE ANIONS TO UNSATURATED SYSTEMS UNDER ULTRASONICALLY DISPERSED POTASSIUM SYSTEM
作者:Yang Gao、Hui Wang、Minghua Xu、Hongzhen Lian、Yi Pan、Yaozeng Shi
DOI:10.1080/00304940109356599
日期:2001.8
%Amino-/.%arylacrylonitriles are commonly prepared by the nucleophilicadditionreaction of acetonitrile anion, prepared by in-situ deprotonation of acetonitrile, to aromatic nitriles. As acetonitrile is a very weak acid (pKa = 31.3)", strong bases such as r-BuOK'? or NaNH2 are The nucleophilicreactions usually give poor yields and require long reaction times (at least 10 hrs). Application of Ultrasonically
.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.