Method of producing 6,6-dimethyl-3-oxabicyclo[3.1.0]hexan-2-one

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Reexamination Certificate

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07928253

ABSTRACT:
A method of producing 6,6-dimethyl-3 -oxabicyclo [3.1.0]hexan-2-one comprising subjecting a cyclopropane compound of the formula (1):(wherein, R1represents an alkyl group, R2represents an alkyl group having carbon atom(s) of 1 to 10, a haloalkyl group having carbon atom(s) of 1 to 10, or an aryl group having carbon atoms of 6 to 10 optionally substituted by an alkyl group having carbon atom(s) of 1 to 10, and when R2represents the alkyl group, R1and R2are optionally the same or different each other.) to any of the following reactions a), b) and c):a) an acid treatment reaction after an alkali hydrolysis reactionb) an acid hydrolysis reactionc) an enzyme hydrolysis reaction , then, removing an aqueous layer.

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