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:
Jan. 25, 1994
Filed:
Jan. 21, 1992
Applicant:
Inventors:
Kenji Hirai, Kanagawa, JP;
Tomoyuki Yano, Kanagawa, JP;
Mitsuo Yamashita, Kanagawa, JP;
Emiko Ejiri, Kanagawa, JP;
Tomoko Tateno, Kanagawa, JP;
Kiyomi Aizawa, Kanagawa, JP;
Assignees:
Sagami Chemical Research Center, Tokyo, JP;
Kaken Pharmaceutical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
558272 ; 558271 ; 558330 ; 548226 ; 568775 ; 568584 ;
Abstract
Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.