Cu(i)-catalyzed tandem benzyldiazoester coupling with terminal alkyne–allene formation–Michael reaction: Application to the syntheses of oxa and azacycles
作者:Gullapalli Kumaraswamy、Neerasa Jayaprakash、Guniganti Balakishan
DOI:10.1039/c1ob06128c
日期:——
A simple and practical procedure for the synthesis of aza- and oxacycles, which possess an array of stereogenic functionalities, is described. This protocol relies on tandem Cu-catalyzed coupling of suitably functionalized terminal alkyne with diazoester followed by isomerization and subsequent aza or oxa-Michael reaction, thus generating the required scaffold with high diastereoselectivity.
描述了一种简单而实用的合成氮杂-和氧杂环的方法,该方法具有一系列立体生成的功能。该协议依赖于适当官能化的末端炔与重氮酯的串联铜催化偶联,然后进行异构化和随后的氮杂或氧杂-迈克尔反应,从而生成所需的具有高非对映选择性的骨架。