作者:Yiyun Chen、Douglas M. Ho、Chulbom Lee
DOI:10.1021/ja053462r
日期:2005.9.1
ruthenium-catalyzed hydrative cyclization of enynes has been developed. The reaction converts a range of 1,5-enynes bearing terminal alkyne and Michael acceptor moieties into cyclopentanone derivatives. From extensive catalyst screening experiments, a trinuclear ruthenium complex, [Ru3(dppm)3Cl5]PF6, has been identified to be an effective catalyst in mediating the 1,1-difunctionalization of alkynes. It is proposed
已经开发了钌催化的烯炔水合环化。该反应将一系列带有末端炔烃和迈克尔受体部分的 1,5-烯炔转化为环戊酮衍生物。从广泛的催化剂筛选实验中,三核钌配合物 [Ru3(dppm)3Cl5]PF6 已被确定为介导炔烃 1,1-双官能化的有效催化剂。提出这种新的umpolung反应通过亚乙烯基钌的形成、反马尔科夫尼科夫水合以及酰基钌与烯烃的分子内迈克尔加成来进行。