环戊二烯基钌配合物催化的高选择性苯乙炔二聚反应

摘要：

@@ Transition metal vinylidene complexes (M=C=CHR) have attracted a great deal of attention in recent years as a new type of organometallic intermediates that may have unusual reactivity[1]. Their reactivity has been explored and their application to organic synthesis is developed[2]. Recent reports on the ruthenium-vinylidene complexes[3]suggest that the reaction of ruthenium-vinylidene complexes with a base generates the coordinatively unsaturated ruthenium acetylide species, which are involved in a number of catalytic and stoichiometric reactions of alkynes. For example,the coordinatively unsaturated ruthenium acetylide species C5Me5Ru(PPh3)-C≡CPh,formed from the reaction of the vinylidene complex C5Me5Ru(PPh3) (Cl)=C=CHPh with a base was reactive toward a variety of small molecules and active in catalytic dimerization of terminal alkynes[4]. The dimerization of terminal alkyne is an effective method of forming enynes, but its synthetic application in organic synthesis has been limited dueto low selectivity for dimeric products[5]. In this communication, we report that three ruthenium complexes were used as catalysts for the highly selective dimerization of phenylacetylene.

机标关键词：环戊二烯基、钌配合物、催化、高选择性、苯乙炔、二聚反应、RUTHENIUM COMPLEXES、organic synthesis、ruthenium complexes、method of、type of

所属期刊栏目：20

分类号：O643(物理化学（理论化学）、化学物理学)

资助基金：国家自然科学基金29734145;the State Key Laboratory of Coordination Chemistry of Nanjing University;Doctoral Research Foundation of the Ministry of Education, China

在线出版日期：2005-08-25（万方平台首次上网日期，不代表论文的发表时间）

页数：共2页

页码：387-388