CuI (xantphos);Cu[9,9-dimethyl-4,5-bis(diphenylphosphine)xanthene]I;copper(1+);(5-diphenylphosphanyl-9,9-dimethylxanthen-4-yl)-diphenylphosphane;iodide
Efficient Copper-Catalyzed Multicomponent Synthesis of <i>N-</i>Acyl Amidines via Acyl Nitrenes
作者:Kaj M. van Vliet、Lara H. Polak、Maxime A. Siegler、Jarl Ivar van der Vlugt、Célia Fonseca Guerra、Bas de Bruin
DOI:10.1021/jacs.9b07140
日期:2019.9.25
Direct synthetic routes to amidines are desired, as they are widely present in many biologically active compounds and organometallic complexes. N-Acyl amidines in particular can be used as a starting material for the synthesis of heterocycles and have several other applications. Here, we describe a fast and practical copper-catalyzed three-component reaction of aryl acetylenes, amines, and easily accessible
A Highly Efficient Palladium/Copper Cocatalytic System for Direct Arylation of Heteroarenes: An Unexpected Effect of Cu(Xantphos)I
作者:Jinkun Huang、Johann Chan、Ying Chen、Christopher J. Borths、Kyle D. Baucom、Robert D. Larsen、Margaret M. Faul
DOI:10.1021/ja100354j
日期:2010.3.24
Heteroarenes are important structural moieties in many chemical industry fields. A highly efficient Pd/Cu-catalyzed C-H arylation method for a range of heterocycles has been discovered. It was found that the key to the success of this transformation is a combination of a palladiumcatalyst and a well-defined copper cocatalyst. The efficiency and lowloadings of catalyst (0.25 mol %) and cocatalyst