Patent ID: 6084105
Filing Date: 2000-07-04
Classification: C07C,C07D

Abstract:
A process for the preparation of a compound of formula (I): ##STR8## wherein W is nitrogen or --CR.sub.4 ; R.sub.2, R.sub.4, R.sub.5 and R.sub.6 are independently selected from hydrogen, halogen, C.sub.1-6 alkyl, C.sub.1-6 haloalkyl, C.sub.1-6 alkoxy, C.sub.1-6 haloalkoxy, R.sub.7 S(O).sub.n --, nitro, cyano and --SF.sub.5 ;R.sub.3 is hydrogen, halogen, C.sub.1-6 alkyl, C.sub.1-6 haloalkyl, C.sub.1-6 alkoxy, C.sub.1-6 haloalkoxy, R.sub.7 S(O).sub.n --, nitro, cyano, --SF.sub.5, or phenyl substituted by one to five members of the group consisting of halogen, C.sub.1-6 alkyl, C.sub.1-6 haloalkyl, C.sub.1-6 alkoxy, C.sub.1-6 haloalkoxy, R.sub.7 S(O).sub.n --, nitro, cyano and --SF.sub.5, which are the same or different;R.sub.7 is C.sub.1-6 alkyl or C.sub.1-6 haloalkyl; and n is 0,1 or 2;which comprises cyclizing, in the presence of a base, a compound of formula (II): ##STR9## wherein W, R.sub.2, R.sub.3, R.sub.5 and R.sub.6 are as defined above.