Method for producing 1-amino-1-alkoxycarbonyl-2-vinylcyclopropane

A method for producing a compound represented by the following formula (4):

• wherein R4 represents an alkyl group containing 1 to 10 carbon atoms, an aralkyl group containing 7 to 20 carbon atoms or an aryl group containing 6 to 12 carbon atoms, each of which may be optionally substituted, wherein
• the method comprises a step (i) of allowing a compound represented by the following formula (3):
• wherein Z represents a halogen atom or OR3, wherein R3 represents an arylsulfonyl group containing 6 to 12 carbon atoms, an alkylsulfonyl group containing 1 to 10 carbon atoms or an aralkylsulfonyl group containing 7 to 20 carbon atoms, each of which may be optionally substituted,
• to react with a malonic ester in the presence of an alkali metal alkoxide or alkali metal hydride, to produce the compound represented by the formula (4),
• wherein, in the step (i), the alkali metal alkoxide or alkali metal hydride is used in an amount of 1.5 equivalents or more with respect to 1 equivalent of the compound represented by the above formula (3), and the malonic ester is used in an amount of 1 equivalent or more with respect to 1 equivalent of the alkali metal alkoxide or alkali metal hydride.