Tetrahedron Letters p. 2525 - 2528 (1989)
Update date:2022-08-04
Topics:
Barnier, J. P.
Ollivier, J.
Salaun, J.
From cyclobutanones 5a-j, ten 1,2-divinylcyclobutanols 1a-j were prepared.A stereochemical effect was clearly evidenced: while trans 1,2-divinylcyclobutanols underwent a retro-ene ring opening, the cis isomers underwent an oxy-Cope ring enlargement.
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