Biocatalytic one-pot three-component synthesis of 4H-chromene derivatives in non-aqueous medium
作者:Prabhakar Shrivas、Umesh Pratap
DOI:10.1007/s11696-018-00679-5
日期:2019.5
The baker’s yeast catalyzed one-potthree-component cyclocondensation of salicylaldehyde, malononitrile or ethyl cyanoacetate, and nitroalkanes for the synthesis of substituted 2-amino-4H-chromene derivatives is presented. The highlights of the protocol is a use of a biodegradable catalyst which is inexpensive, having simple reaction conditions, in other words, at room temperature and neutral pH, good-to-excellent