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Title:
PRODUCTION OF OPTICALLY ACTIVE CHRYSANTHEMUMIC ACID
Document Type and Number:
Japanese Patent JPH11279111
Kind Code:
A
Abstract:

To obtain the subject compound, having an improved trans/cis ratio and optical purity, and useful as an intermediate for medicines and agrochemicals, more advantageously on a commercial scale by optical resolution of chrysanthemumic acid of trans-isomer ratio and optical purity above a certain level in the presence of an optically active organic amine.

This compound is obtained by optical resolution of (A) chrysanthemumic acid having a trans-isomer ratio of 50% or more, preferably 60 to 95%, and optical purity of 10% e.e. or more, preferably 15 to 90% e.e. with (B) an optically active organic amine, e.g. (S)-1-phenyl-2-(tolyl)ethylamine, preferably at a component B/component A molar ratio of 0.3 to 1.1, normally in a solvent (e.g. toluene), preferably at around -10 to 100°C.


Inventors:
ITAGAKI MAKOTO
SUZUKAMO TAKEO
SASAKI KAZUAKI
FUJITA KUNIHIKO
Application Number:
JP2234899A
Publication Date:
October 12, 1999
Filing Date:
January 29, 1999
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO
International Classes:
B01J31/22; C07B53/00; C07B57/00; C07B61/00; C07C51/487; C07C61/37; (IPC1-7): C07C61/37; B01J31/22; C07B53/00; C07B57/00; C07C51/487
Domestic Patent References:
JPS4848449A1973-07-09
JPS6335540A1988-02-16
JPS5034019B11975-11-05
JPS4620382B1
JPS58177935A1983-10-18
JPS59130835A1984-07-27
JPS59128352A1984-07-24
JP49109344B
JPS4875550A1973-10-11
JPH05201938A1993-08-10
JPS50131953A1975-10-18
JPH08283203A1996-10-29
JPH09208521A1997-08-12
JPS50151842A1975-12-06
JPS5217448A1977-02-09
Attorney, Agent or Firm:
Takashi Kuboyama (1 person outside)



 
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