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.
摘要 报道了制备醛 5 的四步、高产、公斤级方案。关键反应是温和的、两步 Cu2O 介导的氰基酯 3 脱羧反应,该反应以优异的产率进行。还探讨了这种方法的普遍适用性。