Tetrahedron p. 3021 - 3031 (1980)
Update date:2022-09-26
Topics:
Lay, W. P.
Mackenzie, K.
Miller, A. S.
Williams-Smith, D. L.
Cyclopentadienones react with certain cyclobutene dienophiles to give the anticipated carbonyl bridge adducts; these, on relatively mild thermolysis, yield dihydrosemibullvalene derivatives by a novel sequence including cheletropic loss of carbon monoxide, electrocyclic ring opening of immediate substituted bicyclo<4,2,0>octadienes, and intramolecular <?4a + ?2a>cycloaddition of the derived cyclooctatrienes.Other pericyclic reactions of compounds related to those of the title compounds are also discussed.
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Doi:10.1021/ja210587q
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