Palladium complexes with abnormal N-heterocyclic carbene ligands derived from 1,2,3-triazolium ions and their application in Suzuki coupling
作者:Thandavamurthy Karthikeyan、Sethuraman Sankararaman
DOI:10.1016/j.tetlet.2009.08.002
日期:2009.10
Chiral and achiral pincer type palladium complexes bearing abnormal N-heterocyclic carbene ligands derived from 1,2,3-triazole are reported. Both complexes are effective as catalysts for non-asymmetric Suzuki coupling reaction for the synthesis of biphenyl derivatives. However, both the complexes failed to catalyze the formation of binaphthyl derivatives, by the asymmetric Suzuki coupling in case of
报道了带有异常的衍生自1,2,3-三唑的N-杂环卡宾配体的手性和非手性钳型钯配合物。两种配合物都可有效地用作非对称Suzuki偶联反应的催化剂,用于合成联苯衍生物。然而,通过手性络合物的不对称Suzuki偶联和在非手性钳形络合物的情况下的非不对称形式,两种络合物均不能催化联萘衍生物的形成。相反,芳基硼酸的脱硼非常有效地发生,而芳基溴化物保持完整。