Triplet-Sensitized Photorearrangements of 2-Phenylallyl Phosphites
作者:Wesley G. Bentrude、Kevin P. Dockery、Srinivasan Ganapathy、Sueg-Geun Lee、Michael Tabet、Yuh-Wern Wu、R. Thomas Cambron、Joel M. Harris
DOI:10.1021/ja960428r
日期:1996.1.1
The triplet-sensitized photorearrangements of 2-phenylallyl phosphites 1, 3, and 4 to the corresponding 2-phenylallylphosphonates 1a, 3a, and 4a are shown to proceed with complete regioselectivity (5 → 6 and Scheme 1). A mechanism is proposed in which the 1,2-biradical-like styryl triplet, 9, adds oxidatively to three-coordinate phosphorus to generate a cyclic, triplet, phosphoranyl 1,3-biradical,