申请人:Showa Denko Kabushiki Kaisha
公开号:EP0989115A2
公开(公告)日:2000-03-29
A process for producing a cyanobenzoic acid compound, a cyanobenzamide compound, an alkyl cyanobenzoate compound, and a cyanobenzoyl chloride compound, which are useful intermediates for a variety of chemicals such as pharmaceuticals, agrochemicals, liquid crystals, and monomers for functional polymers. One nitrile group of an easily available phthalonitrile compound is selectively hydrolyzed to thereby produce a cyanobenzamide compound with high selectivity and yield. The cyanobenzamide compound thus-produced is transformed under acidic conditions into a cyanobenzoic acid compound and a cyanobenzoate ester compound without the cyano group of the benzene ring being damaged.
一种生产氰基苯甲酸化合物、氰基苯甲酰胺化合物、氰基苯甲酸烷基酯化合物和氰基苯甲酰氯化合物的工艺,这些化合物是多种化学品(如医药、农用化学品、液晶和功能聚合物单体)的有用中间体。一种易于获得的邻苯二腈化合物的一个腈基被选择性水解,从而以高选择性和高产率生成一种氰基苯甲酰胺化合物。由此生成的氰基苯甲酰胺化合物在酸性条件下可转化为氰苯甲酸化合物和氰苯甲酸酯化合物,而苯环上的氰基不会受到破坏。