Straightforward copper-catalyzed synthesis of pyrrolopyrazoles from halogenated pyrazolecarbaldehydes
摘要:
Straightforward synthesis of a variety of pyrrolo-fused pyrazoles via a cascade reaction between halopyrazolecarbaldehydes and ethylisocyanoacetate in the presence of copper and a base is described. (C) 2012 Elsevier Ltd. All rights reserved.
Copper-Catalyzed Cascade Reaction of 4-Iodopyrazole Derivatives with Amidines for the Synthesis of Pyrazolo[4,3-d]pyrimidine Derivatives
作者:Maloy Nayak、Neeraj Rastogi、Sanjay Batra
DOI:10.1002/ejoc.201101454
日期:2012.3
An efficient copper-catalyzedcascadereaction of 4-iodopyrazolecarbaldehydes and 4-iodopyrazolecarboxamides with substituted amidines for the preparation of substituted pyrazolo[4,3-d]pyrimidines and pyrazolo[4,3-d]pyrimidin-7(6H)-ones, respectively, is described.