Effect of the nature of a solvent on properties of Pd-P catalysts in hydrogenation of ortho-chloronitrobenzene

摘要

Fundamental aspects of the influence of solvent nature on the activity and selectivity of palladium catalysts modified with white phosphorus in hydrogenation of ortho-chloronitrobenzene were determined. The conditions are suggested in which the chemoselectivity of palladium catalysts modified with white phosphorus can be raised to 93-95 with respect to ortho-chloroaniline in the temperature range 30-80A degrees C without accumulation in the reaction system of undesirable products, ortho-chlorophenylhydroxylamine and azo- and azoxychlorobenzene.