(S)-2-methyl-4-methylidene-3-(2-propenyl)-cyclopent-2-ene-1-ol 、
2,2-dimethyl-3S-(2,2-difluoroethenyl)-cyclopropane-1R-carboxylic acid chloride 在
吡啶 作用下,
以
苯 为溶剂,
生成 (1S) 2-methyl-3-allyl-4-methylene-cyclopent-2-ene-1-yl 2,2-dimethyl-3S-(2,2-difluoroethenyl)-cyclopropane-1R-carboxylate