Hoshikawa T, Tanji K, Matsuo JI, Ishibashi H. Intramolecular [2+2] cycloaddition of homoallylketenes to bicyclo[2.1.1]hexan-5-ones.
Chem Pharm Bull (Tokyo) 2012;
60:548-53. [PMID:
22466740 DOI:
10.1248/cpb.60.548]
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Abstract
Intramolecular [2+2] cycloaddition of γ,δ-unsaturated ketenes derived from hex-5-enoyl chloride derivatives gave bicyclo[2.1.1]hexan-5-ones with complete regioselectivity.
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