Imine hydrolysis and role of a rhodium(I)-imine-amine complex in homogeneous H2-hydrogenation of the imine and a rare example of inequivalent NH2 protons.
A Rh-catalyzed, homogeneous hydrogenation of the imine, PhCH(2)N=CHPh, is shown to involve a Rh-imine-amine species that subsequently activates H(2), the amine (benzylamine) being formed via a Rh-catalyzed hydrolysis of the imine by adventitious water. The imine-amine complex, cis-(Rh[P(p-tolyl)(3)](2)(PhCH(2)N=CHPh)(NH(2)CH(2)Ph))PF(6) (2b), is structurally characterized, and the solution (1)H NMR data reveal inequivalent NH(2) protons.
Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
Paolo
P
Marcazzan
Chalil
C
Abu-Gnim
Kapila N
KN
Seneviratne
Brian R
BR
James