UNE NOUVELLE VOIE D'ACCES AU SQUELETTE DE L'AZULENE

Article abstract of DOI:10.1016/S0040-4039(00)71434-1

Irradiation of 2-allylcycloheptanone 3 forms a mixture of two oxetans, 4 and 5, in high yields. 11-Oxa tricyclo <5.3.1^1,9.0> undecane 5, which constitutes the 9/11 of the photoproducts, is decomposed thermally into a mixture of hydroazulene derivatives.Dehydrogenation of this mixture over palladium on alumina forms azulene.