Hydrogenation catalyst, process for the preparation thereof and

Details Hydrogenation catalyst, process for the preparation thereof and Hydrogenation catalyst, process for the preparation thereof and

1997-06-09

1999-06-15

Raymond, Richard L.

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

Organic compounds

Heavy metal containing

556 19, 556 20, 556 21, 556 23, C07F 724, C07F 1500

Patent

active

059123753

ABSTRACT:
Reaction products of an iridium (III) salt or a hydrate thereof, a diphosphine having secondary phosphine groups and a metal or ammonium chloride, bromide or iodide are excellent hydrogenation catalysts for ketimine. Using chiral diphosphines and prochiral ketimines, diastereoisomeric secondary amines are obtained in high optical yields.

REFERENCES:
patent: 4994615 (1991-02-01), Spindler et al.
patent: 5011995 (1991-04-01), Pugin et al.
patent: 5112999 (1992-05-01), Osborn et al.
patent: 5187281 (1993-02-01), Kolich et al.
patent: 5371256 (1994-12-01), Togni et al.
Journal of Organometallic Chemistry, Bennet et al, vol. 118, 1976 Lausanne, pp. 205-232.

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