CuCl-catalyzed stereoselective conjugate addition of Grignard reagents to 2,3-allenoates
作者:Jian He、Zhan Lu、Guobi Chai、Chunling Fu、Shengming Ma
DOI:10.1016/j.tet.2012.01.027
日期:2012.3
CuCl was found to be an efficient catalyst for the conjugate addition of 2,3-allenoates with Grignard reagents to synthesize poly-substituted β,γ-unsaturated alkenoates with high stereoselectivity in good to excellent yields. Primary, secondary, and tertiary alkyl, vinyl or phenyl Grignard reagents may all be used.
发现CuCl是2,3-脲基酸酯与Grignard试剂共轭加成以高立体选择性,高产率到优良产率合成多取代的β,γ-不饱和链烯酸酯的有效催化剂。伯,仲和叔烷基,乙烯基或苯基格氏试剂均可使用。