作者:Jinkun Huang、Emilio Bunel、Margaret M. Faul
DOI:10.1021/ol7019839
日期:2007.10.1
A mild, general, catalytic system for the alpha-vinylation of carbonyl compounds has been developed. By employing [Pd(P(t)Bu(3))Br](2) as catalyst and LHMDS as base, vinyl bromides, vinyl triflates, and vinyl tosylates couple with 3-methyloxindole in satisfactory yields. The same catalytic system is extended to the alpha-vinylation of ketones and esters.
已经开发出用于羰基化合物的α-乙烯基化的温和,通用的催化体系。通过使用[Pd(P(t(Bu)3(Br))Br](2)作为催化剂,LHMDS作为碱,乙烯基溴化物,乙烯基三氟甲磺酸酯和乙烯基甲苯磺酸酯与3-甲基羟吲哚偶联,收率令人满意。相同的催化体系扩展至酮和酯的α-乙烯基化。