The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1999
Filed:
Dec. 12, 1997
Applicant:
Inventors:
Makoto Nakazawa, Kurashiki, JP;
Toshimichi Mitani, Kurashiki, JP;
Yoichi Satake, Kurashiki, JP;
Shigeo Oozono, Kurashiki, JP;
Goro Asanuma, Kurashiki, JP;
Manzo Shiono, Kurashiki, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560124 ; 562506 ; 570186 ;
Abstract
According to the present invention, a process for the preparation of a cyclopropylacetylene derivative represented by the following formula (III): ##STR1## is provided, which comprises reacting a cyclopropylacrylic acid derivative represented by the following formula (I): ##STR2## with a halogenating agent to obtain a halogenocyclopropylpropionic acid derivative represented by the following formula (II): ##STR3## and reacting the halogenocyclopropylpropionic acid derivative with a base.