5849-25-2Relevant academic research and scientific papers
Externally sensitized mesolytic fragmentations in dithiane-ketone adducts
Gustafson, Tiffany P.,Kurchan, Alexei N.,Kutateladze, Andrei G.
, p. 6574 - 6580 (2007/10/03)
The apparent activation enthalpies, ΔH≠, for externally sensitized mesolytic fragmentations in benzophenone-dithiane adducts were obtained in variable temperature photolyses and compared with DFT activation barriers calculated for β-scission in the corresponding oxygen-centered radicals. The results of these experimental and theoretical studies further support the mechanism in which deprotonation of the hydroxy-group, in the transient cation radical, is coupled with intramolecular electron transfer furnishing the O-centered radical, which subsequently fragments. The quantum yields of fragmentation increase for higher alkyl substituted dithiane adducts.
