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

以氯化亚矾及甲酸酐为主要原料通过酰氯法合成了位二甲酯二酰氯。

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.

以DMF、三乙胺为催化,中,用辛酸直接合成了溴腈辛酸酯,实现由酸合成酯的一步反应。