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:
Feb. 09, 1999
Filed:
May. 13, 1998
Applicant:
Inventors:
Masaya Hashizume, Hyogo, JP;
Mitsuru Sasaki, Hyogo, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
5483687 ;
Abstract
A method for producing a pyrazolinone compound represented by the formula (I): ##STR1## (wherein, R.sup.1 is a hydrocarbyl group which may be substituted, R.sup.2 is a hydrocarbyl group which may be substituted and Ar is a phenyl group which may be substituted) which comprises reacting a lithium salt of a pyrazolinone compound represented by the formula (II): ##STR2## (wherein, R.sup.1 and Ar have the same meanings as described above) is reacted with a sulfonic acid ester represented by the formula (III):