Preparation of halomethylbenzoyl cyanides and novel...

Details Preparation of halomethylbenzoyl cyanides and novel... Preparation of halomethylbenzoyl cyanides and novel...

C - Chemistry, Metallurgy

07

C

C07C 255/40 (2006.01) C07C 253/14 (2006.01) C07C 255/64 (2006.01)

Patent

CA 2120081

12 A process for preparing halomethylbenzoyl cyanides I Ph-CO-CN I (Ph = phenyl radical substituted by chloromethyl or bromomethyl which, if desired, can additionally carry 1 - 4 further radicals) by reacting halomethylbenzoyl chlorides II Ph-CO-C1 II with an alkali metal cyanide or transition metal cyanide, if appropriate in an organic diluent, and novel halomethylbenzoyl cyanides I' (see formula I') (X = halogen, C1-C4-alkyl, C1-C4-alkoxy, CF3, C1-C5-alkyl-(C1-C5-alkyl)hydroxyimino or C1-C5-alkyl- (C2-C5-alkenyl)hydroxyimino; m = 0 to 4 and Y = chloromethyl or bromomethyl) are described. The halomethylbenzoyl cyanides I are important intermediates for the synthesis of plant protection agents.

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