| 摘要 |
PROBLEM TO BE SOLVED: To efficiently obtain a 5-hydroxy-3-oxatricyclo [4.2.1.04,8] nonan-2-one derivative in high yield. SOLUTION: This 5-hydroxy-3-oxatricyclo [4.2.1.04,8] nonan-2-one derivative of formula (2) ( wherein, R is H or methyl) is obtained by reaction of a 5- norbornene-2-carboxylic acid of formula (1) (wherein, R is the same as mentioned above) or an ester thereof with a 2-5C aliphatic percarboxylic acid or a perbenzoic acid having substituent(s) on the benzene ring.
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