Irradiation of 8-alkoxytetrahydro-1-naphthalenones 5 gave rearranged naphthyl alcohols 11 as major products and in contrast, 4-alkoxytetrahydrobenzocyclohepten-5-ones 6 afforded tetrahydrocyclohepta[cd]benzofurans 14 in good yields; the difference in reactivities is attributed to the conformation of six- and seven-membered rings.
辐照 8-烷氧基四氢-1-
萘酮 5 得到重排
萘醇 11 作为主要产物,与此相反,4-烷氧基四氢苯并
环庚烯-5-酮 6 以良好的产率得到四氢
环庚烷并[cd]
苯并呋喃 14;反应活性的差异归因于六元环和七元环的构象。