Catalysis of the Oxidation of 1,4-Cyclohexadiene to Benzene by ElectroactiveBinuclear Rhodium Complexes. (Reannouncement with New Availability Information)

摘要

Electrochemical oxidation of Rh2(TMB)2+4 (TMB = 2,5-diisocyano-2,5-dimethylexane)in the a key step in the, presence of 1,4-cyclohexadiene produces benzene and two protons. It is probable that reaction is a hydrogen-atom transfer from 1,4-cyclohexadiene to electrochemically generated Rh2TMB 3+4 The H-atom abstraction apparently is facilitated by the presence of a d sigma * hole in the Rh 3+2 complex.