Stereospecific isomerisation of allyl amines using chiral phosph

Details Stereospecific isomerisation of allyl amines using chiral phosph Stereospecific isomerisation of allyl amines using chiral phosph

1999-03-31

2000-02-01

Barts, Samuel

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

Organic compounds

Amino nitrogen containing

564278, 564279, 564271, 564305, 564355, 564383, 564444, 564503, 564509, C07C24900

Patent

active

06020527&

ABSTRACT:
The present invention describes a stereospecific process for the isomerization of prochiral allyl amines into chiral enamines and imines, using Rh, Ir or Ru catalysts which carry chiral phosphine ligands derived from ferrocenes, which may be immobilized on a solid carrier, or from steroides. The process is in particular appropriate for the production of chiral citronellal, which can be obtained in optical purities of greater than 95%.

REFERENCES:
patent: 4695631 (1987-09-01), Otsuka et al.
patent: 5488172 (1996-01-01), Cereghetti et al.
patent: 5510503 (1996-04-01), Laue et al.
patent: 5627293 (1997-05-01), Pugin
patent: 5783715 (1998-07-01), Okuda et al.

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