Unsymmetrical Bisphosphines for the Amidation of Aryl Chlorides: A Kinetic Study
作者:Florian C. Falk、Peter Oechsle、Werner R. Thiel、Constantin-Gabriel Daniliuc、Jan Paradies
DOI:10.1002/ejoc.201400159
日期:2014.6
palladium-catalyzed amidation of 4-chlorotoluene with benzamide in the presence of unsymmetrical bisphosphines was investigated. Isostructural [2.2]paracyclophane-derived bisphosphines bearing dicyclohexylphosphino and diarylphosphino moieties were investigated as ligands in the oxidative addition and reductive elimination by kineticstudies. The reductive elimination was accelerated when a bisphosphine ligand