Synthesis of 4‐Substituted Piperidines via a Mild and Scalable Two‐Step Cu<sub>2</sub>O‐Mediated Decarboxylation of Cyanoesters
作者:Brian A. Chauder、Eric E. Boros、Kien S. Du、Wieslaw M. Kazmierski、Cecilia S. Koble、James B. Thompson、Elie A. Tabet
DOI:10.1080/00397910500374971
日期:2006.1
Abstract A four‐step, high‐yielding, kilogram‐scale protocol to prepare aldehyde 5 is reported. The key reaction is a mild, two‐step Cu2O‐mediated decarboxylation of cyanoester 3 that proceeds in excellent yield. The general applicability of this methodology has also been explored.