Effect of placement of phosphorus in a ring on the triplet-sensitized photorearrangement of 2-phenylallyl phosphites
作者:Srinivasan Ganapathy、R.Thomas Cambron、Kevin P. Dockery、Yuh-Wern Wu、Joel M. Harris、Wesley G. Bentrude
DOI:10.1016/s0040-4039(00)61708-2
日期:1993.9
The triplet-sensitized photorearrangement of 2-phenylayllyl phosphite 4 is of the order 50-100 times less efficient than that for its acyclic counterpart, 1. This surprising effect can be understood in terms of the influence of the spiro ring system of 10 on the rate of its conversion to thermodynamically more stable 11 from which phosphonate 12 is formed.