[IrCl2Cp*(NHC)] Complexes as Highly Versatile Efficient Catalysts for the Cross-Coupling of Alcohols and Amines
作者:Amparo Prades、Rosa Corberán、Macarena Poyatos、Eduardo Peris
DOI:10.1002/chem.200801580
日期:——
A comparative study on the catalytic activity of a series of [IrCl(2)Cp*(NHC)] complexes in several C-O and C-N coupling processes implying hydrogen-borrowing mechanisms has been performed. The compound [IrCl(2)Cp*(I(nBu))] (Cp*=pentamethyl cyclopentadiene; I(nBu)=1,3-di-n-butylimidazolylidene) showed to be highly effective in the cross-coupling reactions of amines and alcohols, providing high yields
进行了一系列[IrCl(2)Cp *(NHC)]配合物在几种CO和CN偶联过程中的催化活性的比较研究,这暗示了氢的借入机理。化合物[IrCl(2)Cp *(I(nBu))](Cp * =五甲基环戊二烯; I(nBu)= 1,3-二-正丁基咪唑基亚苄基)显示出在以下化合物的交叉偶联反应中非常有效胺和醇,在不对称醚和N-烷基化胺的生产中提供高收率。一个显着的特征是,该过程是在不存在碱,膦或任何其他外部添加剂的情况下进行的。还报道了与其他已知催化剂(例如Shvo催化剂)的比较研究。