Benzoyl chloride was synthesized by the reaction of benzoic acid with SOCl2 and reacted with resorcinol to give 2,4-dihydroxy benzophenone,the yield was 79.4%.

• 本文以苯甲酸为原料；经酰氯化生成苯甲酰氯；再与间苯二酚反应生成中间体2；4-二羟基二苯甲酮；产率79.；4%25。