Tetrahedron Letters p. 6781 - 6784 (2000)
Update date:2022-08-05
Topics: Aldehydes Lewis acid Dienophile Diene Hetero Diels-Alder Reaction Vinyl-allenes
Regas
Afonso
Galindo
Palenzuela
The Lewis acid-mediated, hetero Diels-Alder reaction of a vinyl-allene system with aldehydes as heterodienophiles has been carried out. In the cases studied, only two cycloadducts have been obtained, which correspond to the endo (major compound) and exo (minor compound) approach of the aldehyde through the less hindered face of the dienic system. (C) 2000 Elsevier Science Ltd.
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