| abstract |
The invention relates to (1) a process for producing a cyanobenzaldehyde compound by converting the aminomethyl group in a cyanobenzylamine compound into an aldehyde group using an oxidizing agent without impairing the cyano group, to (2) a process for producing a cyanobenzoyl halide compound by converting the aldehyde group in a cyanobenzaldehyde compound into an acid halide group without impairing the cyano group, and to (3) a process for producing a cyanobenzoic acid compound by reacting a cyanobenzaldehyde compound with a hypohalogenous compound.According to the present invention, cyanophenyl derivatives that are useful as an intermediate of medical preparations, agricultural chemicals, liquid crystals, functional high molecular monomers and the like can be produced efficiently from raw materials that are obtained without difficulty. |