The efficient copper-catalyzed cyanoalkylation of amines via C–Cbondcleavage has been demonstrated. Distinctive features of this procedure involves mild conditions, broad range of nitrogen nucleophiles, high selectivity, and good functional group tolerance, thus providing a useful approach for the C(sp3)–N bond formations. Most importantly, this protocol is applicable to the late-stage functionalization
Room temperature solvent free aza-Michael reactions over nano-cage mesoporous materials
作者:Pranjal Kalita、Choitayna Dev Pegu、Prantu Dutta、Pranjal K. Baruah
DOI:10.1016/j.molcata.2014.06.031
日期:2014.11
An efficient highly acidic three dimensional mesoporous aluminosilicate nano-cage material A1-KIT5, exhibited excellent catalytic activity in solvent free room temperature aza-Michael reactions of amines with alpha,beta-unsaturated carbonyl compounds to produce beta-amino carbonyl compounds with 100% product selectivity in a short reaction time. The high acidity, 3D pores, and a huge space in the nano-cages materials make them attractive candidate for carrying out important organic reactions. The catalyst provide a simple, easy to handle method, and could be used to solve the problems of corrosion, toxicity, waste production, and a high cost that are being currently encountered by the conventional homogeneous catalysts. (C) 2014 Elsevier B.V. All rights reserved.