Catalyst free decarboxylative trichloromethylation of aldimines
作者:Eloah P. Ávila、Isabella F. de Souza、Alline V. B. Oliveira、Vinicius Kartnaller、João Cajaiba、Rodrigo O. M. A. de Souza、Charlane C. Corrêa、Giovanni W. Amarante
DOI:10.1039/c6ra23936f
日期:——
A catalystfree decarboxylative trichloromethylation of imines to afford different trichloromethyl sulfonyl and sulfinyl amines has been presented. Only DMSO as a solvent at room temperature was necessary to provide the corresponding products in good to high isolated yields. A highly diastereoselective version was carried out, leading to the sulfinylimine with good yield and near perfect diastereoselectivity
Tunable stereoselective alkene synthesis by treatment of activated imines with nonstabilized phosphonium ylides
作者:De-Jun Dong、Yuan Li、Jie-Qi Wang、Shi-Kai Tian
DOI:10.1039/c0cc04739b
日期:——
A broad range of readily accessible N-sulfonyl imines undergo olefination reaction with nonstabilized phosphoniumylides under mild conditions to afford an array of both Z- and E-isomers of 1,2-disubstituted alkenes, allylic alcohols, and allylic amines in good yields and with greater than 99 : 1 stereoselectivity.
Direct catalytic enantioselective Mannich-type reaction of dichloroacetonitrile using bis(imidazoline)-Pd catalysts
作者:Masaru Kondo、Mami Sugimoto、Shuichi Nakamura
DOI:10.1039/c6cc07982b
日期:——
The catalytic enantioselective Mannich-typereaction of dichloroacetonitrile with imines has been developed. Good yields and enantioselectivity were observed for the reaction with various imines using chiral bis(imidazoline) catalysts. b-Aminonitriles or...