Ou Chun-yan
2008
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Journal
Chemistry World
Abstract
The influential factors of synthesizing etrimfos were investigated by single factor experiments.The optimum reaction conditions were as follows: ethyl acetate as solvent;sodium hydroxide solid as acid-receptor;4-dimethylaminopyridine as phase transfer catalyst;its amount was 4% of the amount of 2-ethyl-4-ethoxy-6-hydroxypyrimidine;molar ratio of 2-ethyl-4-ethyoxy-6-hydroxypyrimidine∶sodium hydroxide∶O,O-dimethyl thiophospyhoryl chloride=1∶1.2∶1.1;reaction temperature was 45°C;reaction time was 5 h.The yield of etrimfos was 91%,with the purity of 74%.The product was identified by LC-MS,IR,()~1H NMR.