反应详情

温度

20 °C

7 g of potassium carbonate and 8 g of O,O-dimethyl chlorothiophosphate were added to a solution of 9.8 g of 2-cyano-3-hydroxy-5-n-butoxy-thiophene in 150 ml of acetonitrile and the mixture was stirred for 24 hours at 20° C. and was then filtered. The filtrate was evaporated to dryness and the residue was chromatographed over silica gel. Elution with benzene yielded 11 g of 2-cyano-3-(dimethoxythiophosphoryloxy)-5-n-butoxy-thiophene with a refractive index of nD20 = 1.5375.

1. filtrationwas then filtered
2. customThe filtrate was evaporated to dryness
3. customthe residue was chromatographed over silica gel
4. washElution with benzene