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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.:

US 4026940 B1

PDFFull Text
Date of Patent:
May. 31, 1977

Filed:

Oct. 20, 1975

Process for producing alpha-sulfophenylacetic acid derivatives

Applicant:
Inventors:

Keiichi Sugimoto, Hyogo, JA;

Koji Nishijima, Osaka, JA;

Hiroshi Akimoto, Hyogo, JA;

Tadashi Hanaoka, Osaka, JA;

Nobuharu Kakeya, Hyogo, JA;

Assignee:

Takeda Chemical Industries, Ltd., Osaka, JA;

Attorney:

Wenderoth, Lind & Ponack

Primary Examiner:

James O Thomas, Jr

Assistant Examiner:

Nicky Chan

Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract

.alpha.-Sulfophenylacetic acid derivatives of the general formula: ##STR1## (wherein R is a substituted or unsubstituted primary alcohol, cyclic alcohol or phenol compound residue), which are of value as intermediates of antibacterial agents, are selectively produced in a high yield by bringing a diester compound of the general formula: ##STR2## (wherein R has the same meaning as defined above) into contact with a strong acid.

Find Patent Forward Citations

Sugimoto, Keiichi. (1977). Process for producing alpha-sulfophenylacetic acid derivatives (U.S. Patent No. 4026940). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4026940

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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