以S-甲基异硫脲半硫酸盐和乙氧基亚甲基丙二酸二乙酯为主要原料,乙醇为溶剂,合成出2-甲硫基-4-羟基-5-嘧啶甲酸乙酯,研究了2-甲硫基-4-羟基-5-嘧啶甲酸乙酯的工艺优化,考察了投料比、反应温度、反应时间等因素对产率的影响.获得较好的反应条件:n(C2H6N2S·1/2H2SO4)∶n(C10H16O5)∶n(NaOH)=1.2∶1∶1.8,在室温下缓慢滴加NaOH溶液,搅拌反应6h,酸化得白色固体产物,产率为81.1％.产物结构经熔点测定仪、1H NMR、ESI-MS、FT-IR等技术手段得到验证.
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