Stereoselective synthesis of tetrahydrofuran-3-ols by photochemical δ-hydrogen abstraction of β-allyloxy-carbonyl compounds
作者:Howard A.J. Carless、David I. Swan、David J. Haywood
DOI:10.1016/s0040-4020(01)80353-7
日期:——
On u.v. irradiation, the unsaturated ketones and aldehydes (10) and (11) underwent intramolecular δ-hydrogen abstraction, followed by ring closure of the 1,5-biradical to give 2-alkenyltetrahydrofuran-3-ols in reasonable yields. Photocyclisation occurred with retention of geometry about the alkenyl double bond; thus, u.v. irradiation of the geranyl ketone (10a) led to the tetrahydrofuranols (12a) and