5,6-dihydro-3H,4H-benzothiazole-2,7-dione 、
potassium carbonate 、
O,O-二乙基硫代磷酰氯 在
silica gel 、 6 -4 cyclohexane ethyl acetate 、 2-(diethoxythiophosphoryloxy)-4,5,6,7-tetrahydro-7-oxo-benzothiazole 作用下,
以
丙酮 为溶剂,
反应 25.0h,
以resulted in 3.5 g of 2-(diethoxythiophosphoryloxy)-4,5,6,7-tetrahydro-7-oxo-benzothiazole with a refractive index of nD20 = 1.555的产率得到2-(diethoxythiophosphoryloxy)-4,5,6,7-tetrahydro-7-oxo-benzothiazole