以 SnCl_4/C 为催化剂,草酸和正丁醇为原料,通过直接酯化合成了草酸二丁酯。考察了酯化反应的主要条件对产物收率的影响,得出了最佳反应条件:醇酸摩尔比3.5:1、催化剂用量为总投料质量的2%、反应时间60 min。在此条件下,收率可达96.6%。 SnCl_4 / C as catalyst, oxalic acid and n-butanol as raw materials, the direct esterification of dibutyl oxalate was synthesized. The effects of the main conditions of the esterification on the yield of the product were investigated. The optimum reaction conditions were as follows: the molar ratio of alkyd to acid was 3.5: 1, the amount of catalyst was 2% of the total mass and the reaction time was 60 min. Under this condition, the yield can reach 96.6%.