Copper(I)-Catalyzed Enantioselective Incorporation of Ketones to Cyclic Hemiaminals for the Synthesis of Versatile Alkaloid Precursors
作者:Shi-Liang Shi、Xiao-Feng Wei、Yohei Shimizu、Motomu Kanai
DOI:10.1021/ja308872z
日期:2012.10.17
A general catalytic enantioselective method that can produce five-, six-, and seven-membered N-heterocycles possessing various ketone moieties starting from stable and easily available cyclic hemiaminals and ketones was developed. The method involves three successive steps in one pot (aldol addition, dehydration, and enantioselective intramolecular aza-Michael reaction), all of which are promoted by
开发了一种通用的催化对映选择性方法,该方法可以从稳定且易于获得的环状半胺醛和酮开始生产具有各种酮部分的五元、六元和七元 N-杂环。该方法包括三个连续步骤(醛醇加成、脱水和对映选择性分子内氮杂-迈克尔反应),所有这些都由手性铜(I)-共轭 Brønsted 碱催化剂促进。该方法可用于快速获取用于合成药物铅生物碱的通用手性构件。