Patent number: 4936892
Abstract: A 1-arylpyrazole of the formula (I) ##STR1## in which R.sup.1 stands for hydrogen or nitro,R.sup.2 stands for hydrogen, for a radical ##STR2## or a radical --S(O).sub.n --R.sup.5, R.sup.3 stands for alkyl, for a radical ##STR3## or for a radical --S(O).sub.n --R.sup.5, and, in addition, in the case where R.sup.2 stands for a radical --SO.sub.2 --R.sup.5, R.sup.3 alternatively stands for an inorganic or organic cation bonded in the manner of a salt,whereR.sup.4 stands for hydrogen, alkyl, alkenyl, alkinyl, monohalogenoalkyl, alkoxyalkyl, halogenoalkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkylsulphonylalkyl, alkylsulphinylalkyl, alkylamino, dialkylamino, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted aryloxy, optionally substituted arylthio, or for optionally substituted arylamino,X stands for oxygen or sulphur,R.sup.
Type:
Grant
Filed:
July 15, 1988
Date of Patent:
June 26, 1990
Assignee:
Bayer Aktiengesellschaft
Inventors:
Reinhold Gehring, Otto Schallner, Jorg Stetter, Albrecht Marhold, Hans-Joachim Santel, Robert R. Schmidt, Klaus Lurssen, Harry Strang
Patent number: 4882437
Abstract: A 5-aminopyrazole of the formula ##STR1## in which R.sup.1 represents alkoxycarbonyl, alkenyloxycarbonyl or alkinyloxycarbonyl, andR.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.7, which are identical or different, represent hydrogen, halogen, cyano, nitro, alkyl, alkoxy, alkylsulphonyl, alkoxycarbonyl or a radical --(X)n--R.sup.8whereinX represents oxygen, sulphur, sulphinyl or sulphyonyl,n represents 0 or 1 andR.sup.8 represents halogenoalkyl, with the proviso that at least one of the radicals R.sup.3, R.sup.4, R.sup.5, R.sup.6 or R.sup.7 represents a radical --(X).sub.n --R.sup.8, and R.sup.1 does not represent cyano if R.sup.1 represents trifluoromethyl,These compounds are intermediates useful in the preparation of herbicidally active substituted 5-acylamino-1-phenylpyrazoles.
Type:
Grant
Filed:
September 23, 1988
Date of Patent:
November 21, 1989
Assignee:
Bayer Aktiengesellschaft
Inventors:
Reinhold Gehring, Erich Klauke, Otto Schallner, Jorg Stetter, Hans-Joachim Santel, Robert R. Schmidt