Journal of the Chemical Society. Chemical communications p. 1027 - 1028 (1985)
Update date:2022-09-26
Topics:
Bleasdale, David A.
Jones, David W.
2-Benzopyran-3-one (1; X=H) undergoes strongly regioselective Diels-Alder additions to buta-1,3-diene, isobutene, but-1-ene, and the olefin (6); the adducts derived from (6) and either (1; X = H) or (1; X = OMe) are readily transformed into the aromatic steroids: (9), (10), (17), (18), 9-epi-(10), 9-epi-(18), the naphthalene (14), and the dihydronaphthalene (15).
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(1986)
