| 摘要 |
A process for the preparation of a pesticidal intermediate compound of formula (I) Wherein W is nitrogen or -CR4; R2, R4, R5 and R6 are independently selected from hydrogen, halogen, C1-6alkyl, C1-6haloalkyl, C1-6alkoxy, C1-6haloalkoxy, R7S(O)n-, nitro, cyano and -SF5; R3 is hydrogen, halogen, C1-6alkyl, C1-6haloalkyl, C1-6alkoxy, C1-6haloalkoxy, R7S(O)n-, nitro, cyano, -SF5, or phenyl substituted by one to five members of the group consisting of halogen, C1-6alkyl, C1-6haloalkyl, C1-6alkoxy, C1-6haloalkoxy, R7S(O)n-, nitro, cyano and -SF5, which may be the same or different; R7 is C1-6alkyl or C1-6haloalkyl; and n is 0,1 or2; which comprises the cyclisation, in the presence of a base, of a compound of Formula (II).
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