Patent ID: 6121458
Filing Date: 2000-09-19
Classification: C07C,C07D

Abstract:
A process for preparing a compound of Formula I ##STR110## where R.sup.1 is C.sub.1-5 alkyl, R.sup.2 is C.sub.1-3 haloalkyl, R.sup.3, R.sup.5 and R.sup.6 are halogen and R.sup.10 is C.sub.3-5 alkyl comprising acylating a compound of Formula Ia ##STR111## with a haloacylhalide of Formula A1 ##STR112## the haloacylhalide having a fully halogenated .alpha.-carbon, wherein: Z is halogen to produce a compound of Formula Ib ##STR113## and condensing the compound of Formula Ib with hydrazine in a reaction mixture to form an alkylpyrazole precursor intermediate and alkylating with an alkylating agent to prepare a compound of Formula Id ##STR114## followed by oxidizing a compound of Formula Id with molecular oxygen in the presence of a metal salt catalyst, catalyst promoter and benzoyl peroxide to form a compound of Formula Ie ##STR115## and halogenating the compound of Formula Ie to form a compound of Formula If ##STR116## and esterifying the compound of Formula If to form said compound of Formula I.