Method for producing optically active hydroxycarboxylic acid...

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

08058471

ABSTRACT:
The present invention has its object to provide a method for producing an optically active hydroxycarboxylic acid derivative which is an intermediate important for production of medicines, agrochemicals, chemical products, and so on. The production method of the present invention comprises: carrying out a hydrogen-transfer reduction of a ketocarboxylic acid or a salt thereof by the reaction of an optically active diamine complex to produce an optically active hydroxycarboxylic acid derivative. According to the present invention, it is possible to safely and efficiently produce an industrially-useful optically active hydroxycarboxylic acid derivative.

REFERENCES:
patent: 4614806 (1986-09-01), Buzby, Jr. et al.
patent: 5066815 (1991-11-01), Sayo et al.
patent: 5686275 (1997-11-01), Casey et al.
patent: 6284925 (2001-09-01), Knochel et al.
patent: 2003/0004362 (2003-01-01), Tada et al.
patent: 63-316744 (1988-12-01), None
patent: 7-502410 (1995-03-01), None
patent: 9-157196 (1997-06-01), None
patent: 10-120621 (1998-05-01), None
patent: 2000-053593 (2000-02-01), None
patent: 2001-199928 (2001-07-01), None
patent: 2003-034665 (2003-02-01), None
patent: WO-2005-049816 (2005-06-01), None
Ikariya et al. (Derwent abstract of JP 2001199928).
Spitaleri et al. (Inorganica Chimica Acta, 2003, 352, 61-71).
Ogo et al. (Organometallics, 2002, 21, 2964-2969).
Eduardo M. Rustoy, et al.; “Combination strategy using pure enzymes and whole cells as biocatalysts for the preparation of 2-hydroxyesters and lactones from 2-oxoglutaric acid”; Eduardo M. Rustoy, et al.; Tetrahedron: Asymmetry 15 (2004) 3763-3768.
Zhe Wang et al.; “Enantioselective Synthesis of α-Hydroxy Carboxylic Acids: Direct Conversion of α-Oxocarboxylic Acids to Enantiomerically Enriched α-Hydroxy Carboxylic Acids via Neighboring Group Control”; Zhe Wang et al.; Tetrahedron Letters 39 (1998) 5501-5504.
Felix Spindler et al; “A Highly Enantioselective Rhodium Catalyst for the Hydrogenation of Aliphatic α-Keto Esters”; Felix Spindler et al; CHIRALITY 3:370-375 (1991).
English translation of International Preliminary Report on Patentability (Chapter I) issued in related International Application No. PCT/JP2007/065559 on Mar. 10, 2009.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for producing optically active hydroxycarboxylic acid... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing optically active hydroxycarboxylic acid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing optically active hydroxycarboxylic acid... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4300869

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.