6-(1-ethyl-5-hydroxypyrazol-4-yl)carbonyl-5-trifluoromethyl-3,3,8-trimethylthiochroman-4-one-1,1-dioxide 、
1,2-二氯乙烷 、
环己甲酰氯 在
吡啶 作用下,
以51%的产率得到6-(1-Ethyl-5-cyclohexanecarbonyloxypyrazol-4-yl)carbonyl-5-trifluoromethyl-3,3,8-trimethylthiochroman-4-one,1,1-dioxide