以甲苯、对苯二甲酰氯(TPC)为原料,无水三氯化铝为催化剂,通过亲电取代反应合成1,4-二(4-甲基苯甲酰基)苯(DMBB),产率为82%.在吡啶/水混合体系中用高锰酸钾将DMBB氧化得到1,4-二(4-甲羧基苯甲酰基)苯(DMBA),产率为85%.DMBA与二氯亚砜在DMF催化下反应合成1,4-二(4-甲酰氯苯甲酰基)苯(DMBC),产率为85%.3步总产率为59%.用FT-IR、1↑H NMR和元素分析等对化合物进行了表征.研究表明:化合物具有预期的结构和较高的纯度.
A novel compound 1,4-di(4-methylbenzoyl)benzene (DMBC) was synthesized with terephthaloyl chloride (TPC) and toluene by Friedel-Crafts electrophilic aromatic substitution in the presence of anhydrous aluminum chloride as a catalyst. The yield of DMBB was 82%. Then 1,4-di(4-carboxyl benzoyl)benzene (DMBB) was obtained from DMBA by catalytic oxidation in the mixture of pyridine and water and potassium permanganate as oxidation agent. The yield of DMBA was 85%. 1,4-di(4-chloro formyl benzoyl)benzene DMBC was prepared by acidylated the DMBB with thionyl chloride as a acylating agent and N,N-dimethylformamide(DMF) as a catalyst. The yield of DMBC was 85%. The overall yield of the three-step reaction for DMBC was 59%. The chemical structure was characterized by FT-IR, 1↑H NMR and elemental analysis. The results showed that compound obtained as expected.