Au(I)-Catalyzed Synthesis of Trisubstituted Indolizines from 2-Propargyloxypyridines and Methyl Ketones
作者:Matthew D. Rossler、Colin T. Hartgerink、Emily E. Zerull、Benjamin L. Boss、Abigail K. Frndak、Miles M. Mason、Leslie A. Nickerson、Evan O. Romero、Jaimie E. Van de Burg、Richard J. Staples、Carolyn E. Anderson
DOI:10.1021/acs.orglett.9b01929
日期:2019.7.19
A new Au(I)-catalyzed method for the preparation of trisubstituted indolizines from easily accessible 2-propargyloxy-pyridines is reported. The reaction tolerates a wide range of functionality, allowing for diversity to be introduced in four distinct regions of the product (R, R1, R2, and Ar). The proposed mechanism proceeds via enol addition to an allenamide intermediate and explains the observed
报道了一种新的Au(I)催化的方法,该方法用于从易于获得的2-炔丙基氧基-吡啶制备三取代的吲哚嗪。该反应可耐受多种功能,可将多样性引入产物的四个不同区域(R,R 1,R 2和Ar)。所提出的机理是通过向烯丙酰胺中间体中添加烯醇进行的,并解释了当利用电子贫乏的甲基酮时观察到的产率增加。