METHOD OF PREPARING ALIPHATIC ALPHA, OMEGA-AMINOTRILES

METHOD OF PREPARING ALIPHATIC ALPHA, OMEGA-AMINOTRILES

organic chemistry. SUBSTANCE: described is method of preparing alpha, omega-aminonitrilese by partial hydrogenation of aliphatic alpha, omega dinitriles at elevated temperature and elevated pressure in the presence of solvent and catalyst. Method comprises using catalyst comprising (a) compound base...

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Hauptverfasser: JOGANN-PETER MEL'DER, ALVIN REHFINGER, KLEMENS FLIK, TOM VITTSEL, KLAUS EHBEL, VOL'FGANG KHARDER, VERNER SHNURR, ROL'F FISHER
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Zusammenfassung:organic chemistry. SUBSTANCE: described is method of preparing alpha, omega-aminonitrilese by partial hydrogenation of aliphatic alpha, omega dinitriles at elevated temperature and elevated pressure in the presence of solvent and catalyst. Method comprises using catalyst comprising (a) compound based on metal selected from group consisting of nickel, cobalt, and iron; (b) from 0.01 to 25, preferably from 0.1 to 5 wt % based on (a) promotor selected from group consisting of copper, molybdenum, manganese, aluminium, phosphorus, silicon and also (c) up to 5, preferably from 0.1 to 3 wt % based on (a) compound based on alkali or alkaline-earth metal provided that component (a) is not iron and cobalt-based compound if (b) is promoter based on metal selected from group consisting of manganese and molybdenum. Method makes it possible to prepare alpha, omega aminonitriles having good selectivity. The claimed catalyst have long service life. EFFECT: more efficient preparation method. 6 cl, 6 ex, 1 tbl