This work proposes a new simple route for fexofenadine synthesis with low cost and easily obtainable raw materials. We use benzene and methallyl as starting reactants, applying steps of Friedel–Crafts alkylation reaction, hydrolysis, oxidation, esterification reaction, and reduction reaction to obtain the intermediate product, followed by N-alkylation reaction to obtain 4-1-hydroxy-4-[4-(hydroxydiphenyl)-piperidine]butyl}-α,α-dimethylbenzene acetate. Then, the final product fexofenadine is obtained upon hydrolysis. In the synthesis process, we constantly optimize the reaction conditions such as reaction time, reaction temperature, solvent selection, and other factors, thus improving the final yield of the target product fexofenadine to 33.51 %.
本研究提出了一条利用低成本、易获取的原材料合成
非索非那定的新的简单路线。我们以苯和甲基烯丙基为起始反应物,通过弗里德尔-卡夫斯烷基化反应、
水解、氧化、酯化反应和还原反应等步骤得到中间产物,然后通过 N-烷基化反应得到 4-1-羟基-4-[4-(羟基二苯基)-
哌啶]丁基}-α,α-二甲基
苯乙酸酯。然后经
水解得到最终产品
非索非那定。在合成过程中,我们不断优化反应时间、反应温度、溶剂选择等反应条件,从而将目标产物
非索非那定的最终收率提高到 33.51%。