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:
May. 15, 1990
Filed:
Mar. 16, 1989
Applicant:
Inventors:
Satomi Takahashi, Kobe, JP;
Yasuyoshi Ueda, Takasago, JP;
Kazuhiko Yamada, Akashi, JP;
Yukio Yamada, Kakogawa, JP;
Takehiko Yamane, Akashi, JP;
Yoshifumi Yanagita, Takasago, JP;
Yoshio Shimada, Kakogawa, JP;
Kiyoshi Watanabe, Akashi, JP;
Michio Nomura, Takasago, JP;
Takehisa Ohashi, Kobe, JP;
Kenji Inoue, Kobe, JP;
Assignee:
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560 41 ; 560 38 ;
Abstract
Ethyl-.beta.-benzoyacrylate is reacted with an alkali metal salt of (S)-alanine or an alkali metal salt of N.sup.6 -trifluoroacetyl-L-lysine to form the corresponding Michael addition product, and not less than an equivalent amount of acid is added after completion of the Michael addition to prevent conversion of the (S,S) form of the product to the (R,S) form.