2-氨基-6-氯苯酚 、
4-氯甲基苯甲酰氯 、
对甲苯磺酸 以
邻二氯苯 为溶剂,
以158.5 g of 2-(4'-chloromethylphenyl)-7-chlorobenzoxazole (produced by condensation of 2-amino-6-chlorophenol with 4-chloromethyl-benzoyl chloride and subsequent cyclisation in o-dichlorobenzene in the presence of p-toluenesulfonic acid, melting point 141° to 142° C.)的产率得到2-(4'-Chlormethylphenyl)-7-chlor-benzoxazol