Journal of the Chemical Society. Chemical communications p. 1011 - 1012 (1980)
Update date:2022-08-29
Topics:
Baker, William R.
Senter, Peter D.
Coates, Robert M.
Irradiation of Δα,β-butenolides bearing but-3-enyl and penta-3,4-dienyl side-chains in the γ-position, (2) and (3), effected intramolecular <2 + 2> cycloaddition to form fused tricyclic lactones (4) and (5), respectively, as major products; reductive ring opening of the derived keto-acid (7a) and keto-ester (9) gave the octa- and deca-hydrocyclopentacyclo-octene derivatives (8) and (10) respectively.
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