Preparation of aliphatic alpha, omega-aminonitriles

Details Preparation of aliphatic alpha, omega-aminonitriles Preparation of aliphatic alpha, omega-aminonitriles

1995-01-18

1996-06-18

Brust, Joseph Paul

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

558452, C07C25330

Patent

active

055279465

ABSTRACT:
Aliphatic alpha, omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha, omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which
(a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and
(b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and
(c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal,
with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

REFERENCES:
patent: 2208598 (1941-10-01), Rigby
patent: 2257814 (1940-07-01), Rigby
patent: 5151543 (1992-09-01), Ziemecki
patent: 5296628 (1994-03-01), Sanchez

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