Taking pyromellitic dianhydride and thionyl chloride as raw key material, 2,5-bis(methoxycarbonyl)terephthaloyl chloride was synthesized.

化亚矾及均苯四甲酸酐为主要过法合成了位均苯二甲酯二。

Bromoxynil octanoate was synthesized from bromoxynil,octanoic acid and thionyl chloride in the solvent using DMF and N(C 2H 5) 3 as catalysts by one step reaction.

DMF、三乙胺为催化剂,在溶剂中,用辛酸直接合成了溴苯腈辛酸酯,实现由酸合成酯的一步反应。