| 摘要 |
The present invention relates to a synthesis of a 7-membered carbocyclic compound having diexomethylene groups, more particularly to a synthesis of a 7-membered carbocyclic compound having diexomethylene groups, a novel compound having the structure represented by the following Chemical Formula 1, from trimethylsilanylmethyl-allenol derivative by the intramolecular Prins cyclization using Lewis acid. The 7-membered carbocyclic compound is a useful intermediate for synthesis of other multicyclic compounds. In Chemical Formula 1, R<1 >is a C1 to C6 alkyl group, and R<2 >and R<3 >is respectively a hydrogen atom, or R<1>, R<2 >and R<3 >may be connected with neighboring substituents to form a 5 to 10-membered aliphatic or aromatic ring.
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