1-三苯基膦-2-丙酮 、
三苯基膦 、
一氯丙酮 、
1,1,1-三氟丙酮 、
乙酰乙酸乙酯 、 以
5,5,5-trifluoro-4-methyl-pent-3-en-2-one 为溶剂,
以to obtain 3,5-dimethyl-5-trifluoromethyl-2-cyclohexen-1-one as main product and 4-ethoxycarbonyl-3,5-dimethyl-5-trifluoromethyl-2-cyclohexen-1-one as by-product respectively的产率得到3,5-Dimethyl-5-trifluoromethyl-2-cyclohexen-1-one