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:
Oct. 01, 1991
Filed:
Jun. 16, 1989
Shinichiro Takigawa, Funabashi, JP;
Shuzo Shinke, Funabashi, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
There is disclosed a process for preparing a pyrazolecarboxylic acid derivative represented by the formula (II): ##STR1## wherein Y and Z each represent a hydrogen atom, a halogen atom, a nitro group, a cyano group, COOR.sub.1, NR.sub.1 R.sub.2, CONR.sub.1 R.sub.2, SR.sub.1, SO.sub.2 NR.sub.1 R.sub.2, SO.sub.2 R.sub.3, R.sub.3 CO, OR.sub.4, CHX.sub.2 or CX.sub.3 ; A represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted pyridyl group or OR.sub.5 ; where R.sub.1 and R.sub.2 each represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; R.sub.3 represents an alkyl group having 1 to 10 carbon atoms; R.sub.4 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted phenyl group, CHF.sub.2, CF.sub.3 or CF.sub.3 CH.sub.2 ; R.sub.5 represents an alkyl group having 1 to 10 carbon atoms; and X represents a halogen atom, which comprises oxidizing a pyrazole compound represented by the formula (I): ##STR2## wherein Y, Z and A have the same meanings as defined above, with an oxygen-containing gas in the presence of a metal compound catalyst.