Ethanol → Ethyl 2,2-difluoro-1-methylcyclopropane-carboxylate

참여 물질

반응 단계

35 ml of ethanol are added dropwise at 20° C. to 15.45 g (0.1 mol) of 2,2-difluoro-1-methyl-cyclopropanecarbonyl chloride, with stirring. After the addition of 2 drops of concentrated sulphuric acid, the reaction mixture is refluxed for another hour. Excess ethanol is subsequently distilled off, and the residue is dried and distilled under atmospheric pressure. In this manner, 14.2 g (87% of theory) of ethyl 2,2-difluoro-1-methylcyclopropane-carboxylate are obtained in form of a liquid of boiling point 141°-143° C.

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