Abstract: A 1-aryl-pyrazole of the formula ##STR1## in which R represents cyano or nitro,Ar represents in each case optionally substituted phenyl or pyridyl,X represents an azido group, or represents the radical ##STR2## and R.sup.1, R.sup.2 and R.sup.3 each independently represents alkyl, alkenyl, alkinyl, halogenoalkyl, alkoxy, alkoxyalkyl, cycloalkyl or cycloalkyloxy, or represents in each case optionally substituted aryl, aryloxy, aralkyl or aralkyloxy,but wherein, in the case where R represents cyano and X simultaneously represents an azido group, Ar does not represent unsubstituted phenyl and does not represent 5-nitro-2-pyridyl. The compounds exhibit herbicidal and plant growth-regulating activity.

Abstract: Insecticidally and acarididally active 1-arylpyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or halogen alkyl,R.sup.2 represents alkyl, alkenyl, alkinyl, cycloalkyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, alkylsulphinylalkyl, alkylsulphonylalkyl, optionally substituted aralkyl or optionally substituted aryl,R.sup.3 represents alkyl, alkenyl, alkinyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl or optionally substituted aralkyl,R.sup.4 represents alkyl, alkenyl, alkinyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl or optionally substituted aralkyl, and, in addition, also represents hydrogen in the case where R.sup.3 does not simultaneously represent unsubstituted alkyl, orR.sup.3 and R.sup.

Abstract: Herbicidally active novel substituted 5-acylamino-1-phenylpyrazoles of the formula ##STR1## in which R.sup.1 represents cyano, alkoxycarbonyl, alkenyloxycarbonyl, alkinyloxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkenylaminocarbonyl or alkinylaminocarbonyl,R.sup.2 represents hydrogen, alkyl, alkenyl, alkinyl, optionally substituted cycloalkyl, alkoxyalkyl, alkylthioalkyl, halogenoalkyl or optionally substituted aryl 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 --R.sup.8,whereinR.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 --R.sup.8, but R.sup.1 does not represent cyano if R.sup.5 represents trifluoromethyl. Many of the intermediates are also novel.

Abstract: 5-Dichloracetamido-4-nitro-1-aryl-pyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen, fluorine, chlorine or bromine,R.sup.2 represents hydrogen, fluorine or chlorine,R.sup.3 represents halogen, halogenoalkyl, halogenoalkoxy, halogenoalkylthio or halogenoalkylsulphonyl,R.sup.4 represents hydrogen, fluorine, or chlorine, andR.sup.5 represents fluorine, chlorine or bromine, but in the case in which R.sup.1 and R.sup.5 simultaneously represent chlorine and in addition R.sup.2 and R.sup.4 simultaneously represent hydrogen, R.sup.3 does not represent chlorine or trifluoromethyl,exhibit herbicidal and plant growth-regulating properties. Novel intermediates therefor are also shown.

Abstract: 1-Aryl-pyrazoles of the general formula ##STR1## in which Hal represents halogen,R.sup.1 and R.sup.3 independently of one another represent cyano, nitro, halogen, alkyl, alkoxy, alkoxycarbonyl, halogenoalkyl, halogenoalkoxy or a radical --S(O).sub.n --R.sup.6 andR.sup.2, R.sup.4 and R.sup.5 independently of one another and independently of R.sup.1 and R.sup.3 represent the same radicals as R.sup.1 and R.sup.3, and additionally represent hydrogen,and whereinR.sup.6 represents alkyl, halogenoalkyl, amino, alkylamino or dialkylamino and n-represents the number 0, 1 or 2 are disclosed.These compounds can be nitrated to form herbicially effective 1-aryl-4-nitropyrazoles.

Abstract: Herbicidally active 1-aryl-4-cyano-5-halogenopyrazoles of the formula ##STR1## in which R is hydrogen or alkyl,Hal is halogen, andAr is substituted phenyl or represents polysubstituted pyridyl.Intermediates of the formulas ##STR2## are also disclosed.

Abstract: Herbicidally and insecticidally active 4-nitro-1-phenylpyrazoles of the formula ##STR1## in which R.sup.1 and R.sup.2 each independently is hydrogen, alkyl, cycloalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl or halogenoalkyl,R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 each independently is hydrogen, halogen, cyano, nitro, alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkoxycarbonyl, or --(X).sub.n --R.sup.8,X is oxygen, sulphur, sulphinyl or sulphonyl,n is 0 or 1, andR.sup.8 is halogenoalkyl.

Abstract: 1-Aryl-5-alkoximinoalkylamino-pyrazoles of the formula ##STR1## in which R represents cyano or nitro, or represents an optionally substituted heterocyclic radical,R.sup.1 represents hydrogen or alkyl,R.sup.2 represents hydrogen or alkyl, or represents optionally substituted aryl,R.sup.3 represents hydrogen, alkyl or alkenyl, or represents in each case optionally substituted aralkyl or aryl andAr represents optionally substituted phenyl or pyridyl,are active as herbicides and plant growth regulants. Compounds of the formula ##STR2## in which R" has the same definition as R other than cyano, are also active and useful as intermediates as well.

Abstract: Herbicidally active 5-amino-1-phenylpyrazoles of the formula ##STR1## in which R is CN, or an ester or amido group,R.sup.1 is an organic radical,R.sup.2 is an organic radical, hydrogen or an acyl or thioacyl radical,R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 can be hydrogen or various organic radicals but at least one is a haloalkyl, haloalkoxy, haloalkylthio, haloalkylsulphinyl or haloalkylsulphonyl radical, but R is not CN at the same time as R.sup.5 is CF.sub.3. The compounds ##STR2## are intermediates therefor and are also herbicidal.

Abstract: 5-acylamino-1-phenylpyrazole herbicides of the formula ##STR1## in which R represents cyano, alkoxycarbonyl, alkenyloxycarbonyl, alkinyloxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkenylaminocarbonyl or alkinylaminocarbonyl,R.sup.1 represents alkyl, alkenyl, alkinyl, alkoxyalkyl, alkylthioalkyl, halogenoalkyl, cycloalkyl or optionally substituted aryl, and, in the case in which Y represents the ##STR2## group, also represents hydrogen, X represents oxygen or sulphur,Y represents oxygen, sulphur or the ##STR3## group, whereinZ represents hydrogen, alkyl, alkoxy, alkenyl, alkinyl or optionally substituted aryl,R.sup.2 represents hydrogen or the radical ##STR4## and R.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').sub.n --R.sup.8,whereinX' represents oxygen, sulphur, sulphinyl or sulphonyl,n represents 0 or 1 andR.sup.

Abstract: Herbicidally active 5-acylamido-1-aryl-pyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen, halogen or nitro,R.sup.2 represents hydrogen or alkyl,X represents oxygen or sulphur,Y represents oxygen, sulphur, a sulphinyl group or a sulphonyl group,A represents a straight-chain or branched, optionally substituted alkylene bridge,Ar.sup.1 represents in each case optionally substituted aryl or heteroaryl, andAr.sup.2 represents in each case optionally substituted phenyl or pyridyl.

Abstract: 5-perfluoroacylamino-4-nitro-1-arylpyrazole salts of the formula ##STR1## in which R represents a perfluoroalkyl radical,M.sup..sym. represents one equivalent of a metal cation, or represents an optionally substituted ammonium ion andAr represents in each case optionally substituted phenyl or pyridyl,exhibit herbicidal and plant growth-regulating activity.

Abstract: Herbicidally active substituted 5-amino-1-aryl-pyrazoles of the formula ##STR1## in which R represents hydrogen, cyano, nitro or alkoxycarbonyl,R.sup.1 represents hydrogen or alkyl,R.sup.2 and R.sup.3 independently of one another in each case represent alkyl, alkenyl, alkinyl, halogenoalkyl, alkoxyalkyl, cycloalkyl, alkoxy or cycloalkoxy, or represent in each case optionally substituted aryl, aryloxy, aralkyl or aralkyloxy,X represents oxygen or sulphur andAr represents in each case optionally substituted phenyl or pyridyl,or salts thereof.

Abstract: Plant growth regulants and herbicides of the formula ##STR1## in which R.sup.1 represents hydrogen or alkyl,R.sup.2 represents cyano or nitro,R.sup.3 and R.sup.4 independently of one another each represent hydrogen, alkyl, alkoxyalkyl, alkylthioalkyl or halogenoalkyl or represent optionally substituted aryl, orR.sup.3 and R.sup.4 together represent a divalent alkylene radical,R.sup.5 represents hydrogen or alkyl andAr represents optionally substituted phenyl, or represented optionally substituted pyridyl.

Abstract: Herbicidally active 1-aryl-5-hydrazinopyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen or alkyl,R.sup.2 represents cyano or nitro,R.sup.3 represents hydrogen, or represents in each case optionally substituted alkyl, alkenyl, alkinyl or cycloalkyl, or represents a radical ##STR2## or represents a radical --SO.sub.2 --R.sup.7, R.sup.4 represents hydrogen, or represents in each case optionally substituted alkyl, alkenyl, alkinyl or cycloalkyl, or represents a radical ##STR3## or represents a radical --SO.sub.2 --R.sup.7, R.sup.5 represents hydrogen: or, in the case where R.sup.4 represents hydrogen, also represents a radical ##STR4## or represents a radical --SO.sub.2 --R.sup.7, or represents in each case optionally substituted alkyl, alkenyl, alkinyl or cycloalkyl, wherein, in each case,X represents oxygen or sulphur,R.sup.

Abstract: Herbicidally effective 1-aryl-4-nitropyrazoles of the general formula (I) ##STR1## in which Hal represents halogen,R.sup.1 and R.sup.3 independently of one another represent cyano, nitro, halogen, alkyl, alkoxy, alkoxycarbonyl, halogenoalkyl, halogenoalkoxy or a radial --S(O).sub.n --R.sup.6 andR.sup.2, R.sup.4 and R.sup.5 independently of one another and independently of R.sup.1 and R.sup.3 represent the same radicals as R.sup.1 and R.sup.3, and additionally represent hydrogen,and whereinR.sup.6 represents alkyl, halogenoalkyl, amino, alkylamino or dialkylamino and n-represents the number 0, 1 or 2 are disclosed.

Abstract: Herbicidally active substituted 5-acylamino-1-phenylpyrazoles of the formula ##STR1## in which R.sup.1 represents cyano, alkoxycarbonyl, alkenyloxycarbonyl, alkinyloxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkenylaminocarbonyl or alkinylaminocarbonyl,R.sup.2 represents hydrogen, alkyl, alkenyl, alkinyl, optionally substituted cycloalkyl, alkoxyalkyl, alkylthioalkyl, halogenoalkyl or optionally substituted aryl 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).sub.n --R.sup.8,whereinX represents oxygen, sulphur, sulphinyl or sulphonyl,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, but R.sup.1 does not represent cyano if R.sup.5 represents trifluoromethyl. Many of the intermediates are novel.

Abstract: 5-Amino-4-heterocyclyl-1-phenylpyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen or alkyl,R.sup.2 represents hydrogen or a radical ##STR2## R.sup.3 represents hydrogen, ##STR3## alkyl, alkenyl or alkinyl, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 independently of one another represent hydrogen, cyano, nitro, halogen, alkyl, alkoxy, alkoxycarbonyl, halogenoalkyl, halogenoalkoxy or a radical --S(O).sub.n --R.sup.10,R.sup.9 represents hydrogen, alkyl, alkenyl, alkinyl, halogenoalkyl, alkoxyalkyl, alkylthioalkyl, optionally substituted cycloalkyl, optionally substituted aryl, alkoxy, alkylthio, optionally substituted aryloxy or aryloxyalkyl, optionally substituted arylthio, alkylamino, dialkylamino or optionally substituted arylamino,R.sup.

Abstract: Herbicidally active 5-amino-1-phenyl-pyrazoles, most of which are new, of the formula ##STR1##

Abstract: Acid halides and anhydrides of acids of the formula ##STR1## with the substituent definitions given in the description are obtained by reacting the corresponding acids with organic or inorganic acid halides or acid anhydrides. The new compounds are intermediate products for the preparation of new reactive dyestuffs.