Preparation of amines by reductive amination using zeolite catal

Details Preparation of amines by reductive amination using zeolite catal Preparation of amines by reductive amination using zeolite catal

1992-10-30

1994-03-01

Shah, Mukund J.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

548950, 548579, 548517, 548518, 546192, 546208, 546186, 546349, 544 78, 544129, 544141, 540480, 540481, 540450, 540484, C07D29502, C07D20504

Patent

active

052909328

ABSTRACT:
Amines of the general formula I ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.20 -cycloalkyl, C.sub.4 -C.sub.20 -alkylcycloalkyl, C.sub.4 -C.sub.20 -cycloalkylalkyl, aryl, C.sub.7 -C.sub.20 -alkylaryl, C.sub.7 -C.sub.20 -aralkyl or a heterocyclic radical and n is an integer of from 3 to 7, are prepared by a process in which a ketone of the general formula II ##STR2## where R.sup.1 and R.sup.2 have the abovementioned meanings, is reacted with a cyclic amine of the general formula III ##STR3## where n has the abovementioned meanings, in the presence of a zeolite and/or SiO.sub.2 having a zeolite structure and/or a phosphate and/or a phosphate having a zeolite structure as catalysts at from 50.degree. to 500.degree. C. and from 0.01 to 50 bar.

REFERENCES:
patent: 3903079 (1975-09-01), Heinz
patent: 3976697 (1976-01-01), Kuntschik et al.
patent: 4806690 (1989-01-01), Bowman
Barney, Tetrahedron Letters, vol. 31, No. 39, pp. 5547-5550 (1990).
Organic Reactions, vol. 4, Chapter 3, (1948) pp. 174-256.
Houben-Weyl, Methoden der organischen Chemie, 4th Edition, vol. 11/1 (1957) pp. 611-663.
Database WPIL, Week 8815, Derwent Publications Ltd., AN 88-101677, Abstract of JP63051362.

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