[3-(4'-chloro-4-methylbiphenyl-3-yl)-1,1-dimethylprop-2-ynyloxy]acetic acid 在
silver carbonate 水 、
乙酸乙酯 、
Sodium sulfate-III 作用下,
以
乙腈 为溶剂,
反应 0.67h,
以to give 6-[1-(4′-chloro-4-methylbiphenyl-3-yl)methylidene]-5,5-dimethyl-[1,4]dioxan-2-one (1.75 g) as a solid的产率得到6-[1-(4'-chloro-4-methylbiphenyl-3-yl)methylidene]-5,5-dimethyl-[1,4]dioxan-2-one