Tetrahedron Letters p. 4817 - 4820 (1983)
Update date:2022-08-16
Topics:
Jackson, David A.
Rey, Max
Dreiding, Andre S.
Methyl- and ethyl-vinylketene 3 were added to several simple olefins 1 to afford alkylated 2-vinylcyclobutanones 4, which in turn rearranged to cyclopentenones 6 (via dienones 5A,B) or 7 (via 1,2-acyl migration) under acid catalysis.Evidence is presented for a cyclopropyl-carbinyl intermediate 8.
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