Production method of compound-2-halo-2,2-difluoro ethanone (phenyl-substituted) 1 and - (2-amino-substituted phenyl)-2-halo-2,2-difluoro ethanone compound 1

摘要

Is to provide a novel process for the preparation of [challenges] 1 - (substituted phenyl)-2-halo-2,2-difluoro ethanone compound. [MEANS FOR SOLVING PROBLEMS] Wherein, (2) X ³ and ^1, X ² X is a halogen atom, C ₁ ~C ₆ alkyl, C ₁ ~C ₆ haloalkyl, C ₁ ~C ₆ alkoxy, C ₁ ~ independently with general formula represents a ₆ haloalkoxy like C, Y represents a halogen atom. It is by reacting with nitrous acid compound to a compound represented by the formula: (1) [wherein, Y and ^2, X ³ X ^1, X represents the same meaning as in the general formula. Methods of producing a compound represented by the formula:. None [Selection Figure]