Processes for producing isoxazole-5-carboxamide oxime and for producing 3- (5-isoxazolili) - delta2 -1,2,4-oxadiazoline, process for producing a compound, and, compound

摘要

"PROCESSES TO PRODUCE ISOXAZOL-5-CARBOXAMIDE OXIMA AND TO PRODUCE 3- (5-ISOXAZOLIL) -DELTA ^ 2 ^ -1,2,4-OXADIAZOLINE, PROCESS TO PRODUCE A COMPOUND, AND, COMPOUND". A process represented by the reaction scheme (a) that allows the industrial mass production of sym 2-1,2,4-oxadiazoline derivatives with excellent insecticidal effects, or their salts, in high yield with advantage, [where X ~ 1 ~ is halogen; R ~ 1 ~ is optionally substituted alkyl, optionally substituted acyl, or C ~ 1 ~ CO; R ~ 2 ~ is (1) halogen, (2) C ~ 1-6 ~ haloalkyl, (3) C ~ 1-6 ~ haloalkoxy or (4) phenyl optionally substituted by C ~ 1-6 ~ haloalkyl; A is nitrogen or = CR ~ 3 ~ - (where R ~ 3 ~ is C1 or CN); R ~ 4 ~ is C ~ 1-6 ~ alkyl or C ~ 1-6 ~ haloalkyl; n is 0, 1 or 2; and X ~ 2 ~ is halogen].