Process for the production of amines from imines of nitriles

Details Process for the production of amines from imines of nitriles Process for the production of amines from imines of nitriles

1998-10-30

2000-01-04

Barts, Samuel

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

Organic compounds

Amino nitrogen containing

564445, 564446, C07C20932

Patent

active

060111798

ABSTRACT:
A process for the production of primary and/or secondary amines from imines or nitriles, comprising an aminating hydrogenation of imine or of nitrile with hydrogen in the presence of ammonia, of a hydrogenation catalyst based on cobalt, nickel, ruthenium or mixtures of these metals and of a base, at a temperature within the range of 50.degree. C. to 200.degree. C. and at a pressure within the range of 0.3 to 30 MPa. The yield of amine is increased by the use of a quaternary ammonium hydroxide as base. Preferably a tetraalkylammonium hydroxide is used in a quantity of from 0.01 to 100 mMol per mol of amine or of nitrile. The process is suitable in particular for the production of isophoronediamine from isophorone nitrile imine.

REFERENCES:
patent: 5166396 (1992-11-01), Hutchmacher
patent: 5166444 (1992-11-01), Hutchmacher
patent: 5283366 (1994-02-01), Hutchmacher
patent: 5373068 (1994-12-01), Piana
patent: 5504254 (1996-04-01), Haas
patent: 5583260 (1996-12-01), Haas
patent: 5679860 (1997-10-01), Haas

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