Effect of β-Alkylthioethyl Substitution in 1,3-Dithianes: Quasianchimeric Assistance in Photoinduced Electron Transfer?
作者:Roman V. Valiulin、Andrei G. Kutateladze
DOI:10.1021/jo800938d
日期:2008.8.1
substitution. Introduction of sulfur at the β-position of the flexible alkyl chain reverses this trend, whereas such substitution at the α-position has negligible effect. This is rationalized in terms of the three electron two center bonds, favorable due to the formation of five-membered cyclic radical cations in the case of β-substitution, which is supported by DFT computations.