Crystal and molecular structure of 2-phenyl-2-thiono-5,6-(4?,5?-dimethylbenzo)-1,3,2-dithiaphosphepine and 2-methoxy-2-oxo-5,6-benzo-1,3,2-dioxaphosphepine
Photo-Arbuzov rearrangements of cyclic phosphite systems
作者:Margaret S Landis、Nicholas J Turro、Worawan Bhanthumnavin、Wesley G Bentrude
DOI:10.1016/s0022-328x(01)01432-2
日期:2002.3
The direct UV irradiation of cyclic phosphites 1–4 was carried out in argon-saturated solvents. In all cases examined, the rearranged, ring-contracted Photo-Arbuzov phosphonate was the major product formed with isolated yields ranging from 40 to 50%. These phosphonate photoproducts, 5–8, represent novel, bicyclic, aromatic phosphonate systems never before described in the literature of heterocyclic