Heterogeneous catalytic transfer hydrogenation of 4-nitrodiphenylamine to p-phenylenediamines
Abstract
p-Phenylenediamine analogues have been prepared from 4-nitrodiphenylamine (1) by catalytic transfer hydrogenation in one stage; the process can be extended to the general condensation of a nitro compound with an alcohol (with Raney nickel as catalyst) or a ketone (with palladium as catalyst).