New cationic rhodium–amine complexes and their implication in the catalytic anti-Markovnikov oxidative amination of styrenes
作者:Matthias Beller、Harald Trauthwein、Martin Eichberger、Claudia Breindl、Thomas E Müller、Alexander Zapf
DOI:10.1016/s0022-328x(98)00745-1
日期:1998.9
The oxidativeanti-Markovnikovamination of styrenes catalyzed by cationic rhodium complexes provides a new access to enamines. As catalyst precursors [Rh(cod)(amine)2]+ complexes have been identified and characterized for the first time by X-ray crystallography and NMR. While piperazine, N-methylpiperazine, and thiomorpholine form 1:1 Rh–amine complexes, non-chelating amines such as piperidine and