申请人:Showa Denko Kabushiki Kaisha
公开号:US06433211B1
公开(公告)日:2002-08-13
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.
生产氰苯甲酸化合物、氰苯酰胺化合物、烷基氰苯酸酯化合物和氰苯甲酰氯化合物的方法,这些化合物是制药、农药、液晶和功能性聚合物单体等各种化学品的有用中间体。易得的邻苯二腈化合物的一个腈基被选择性水解,从而高选择性和产率地产生氰苯酰胺化合物。因此产生的氰苯酰胺化合物在酸性条件下转化为氰苯甲酸化合物和氰苯酸酯化合物,而苯环的腈基不会受损。