Patent ID: 6060605
Filing Date: 2000-05-09
Classification: C07C,C07D,C07F

Abstract:
Process for preparing substituted arylpyrazoles of the general formula (I) ##STR19## in which R.sup.1 represents hydrogen or halogen,R.sup.2 represents cyano or halogen,R.sup.3 represents halogen, alkyl, halogenoalkyl or alkoxycarbonyl andR.sup.4 represents optionally substituted alkyl,characterized in that in a first step halogenoarenes of the general formula (II) ##STR20## in which R.sup.1, R.sup.2 and R.sup.3 are each as defined above andX represents halogenare reacted with substituted alkines of the general formula (III) ##STR21## in which Z represents 1-hydroxy-isopropyl or trimethylsilyl,the substituted arylalkines formed of the general formula (IV) ##STR22## in which R.sup.1, R.sup.2, R.sup.3 and Z are each as defined aboveare reacted in a second step with an alkali metal hydroxide or alkaline earth metal hydroxide and/or an alkali metal fluoride or alkaline earth metal fluoride, the arylalkines formed of the general formula (V) ##STR23## in which R.sup.1, R.sup.2 and R.sup.3 are each as defined aboveare reacted in a third step with acylating agents of the general formula (VI)R.sup.4 --CO--X.sup.1 (VI)in whichR.sup.4 is as defined above andX.sup.1 represents halogen or the group --O--CO--O--R.sup.4and the arylalkinones formed of the general formula (VII) ##STR24## which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each as defined aboveare reacted in a fourth step with hydrazine (hydrate).