Title:
PHOSPHINES, TRANSITION METAL COMPLEXES CONTAINING THE SAME AS THE LIGAND, AND PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE CARBOXYLIC ACIDS
Document Type and Number:
WIPO Patent Application WO/2005/097811
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a process by which desired optically active carboxylic acids can be prepared from a carboxylic acid having a carbon-carbon double bond through asymmetric hydrogenation with a catalyst consisting of a transition metal complex containing a water-soluble ligand and which permits easy separation of the used catalyst from the product by liquid-liquid separation alone and enables the recovery of an expensive transition metal and the reuse of the catalyst. [MEANS FOR SOLVING PROBLEMS] Phosphines represented by the general formula (1): wherein X1 is oxygen or methylene; X2 is methylene,ethylene, trimethylene, 1,2-dimethylethylene, isopropylidene, or difluoromethylene; A is a Group IA alkali metal of the periodic table, hydrogen, or an ammonium ion; and a, b, c and d are each an integer of 0 or 1, with the proviso that the cases wherein the sum of a, b, c, and d is 0 are excepted.
Inventors:
AMANO AKIRA (JP)
IGARASHI DAISUKE (JP)
SAYO NOBORU (JP)
IGARASHI DAISUKE (JP)
SAYO NOBORU (JP)
Application Number:
PCT/JP2005/003117
Publication Date:
October 20, 2005
Filing Date:
February 25, 2005
Export Citation:
Assignee:
TAKASAGO PERFUMERY CO LTD (JP)
AMANO AKIRA (JP)
IGARASHI DAISUKE (JP)
SAYO NOBORU (JP)
AMANO AKIRA (JP)
IGARASHI DAISUKE (JP)
SAYO NOBORU (JP)
International Classes:
C07B53/00; C07C51/36; C07C53/128; C07F9/50; C07F9/655; C07F15/00; C07F15/04; C07B61/00; (IPC1-7): C07F9/50; C07B53/00; C07C51/36; C07C53/128; C07F9/655
Foreign References:
| JPH07252281A | 1995-10-03 | |||
| JPS63239245A | 1988-10-05 |
Attorney, Agent or Firm:
Saeki, Norio (15-8 Nihonbashi, 3-chom, Chuo-ku Tokyo 27, JP)
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