98779-09-0Relevant academic research and scientific papers
Photochemistry of α,β-Unsaturated Thiones: Cycloaddition to Electron-Deficient Olefins from Higher Excited States
Rao, V. Pushkara,Ramamurthy, V.
, p. 332 - 339 (2007/10/02)
Electron-deficient olefins add to thioenone 1 upon ??* excitation.Cycloaddition occurs to the thiocarbonyl chromophore preferentially from the less-hindered side to yield thietanes.Thietane formation is stereospecific and regioselective.This addition has been inferred to originate from the second excited singlet, S2(??*), state.The exciplex intermediacy has been inferred from the dependence of the fluorescence quenching rate constant on the electron-acceptor properties of the olefin.The observed site specificity and regioselectivity are rationalized on the basis of PMO theory.The observed photochemical behavior of thioenone is different from that of enones.
Upper Excited-State Reactions of α,β-Unsaturated Thiones: Photocycloaddition to Electron-Deficient Olefins
Rao, Varanasi Pushkara,Ramamurthy, Vaidhyanathan
, p. 5009 - 5012 (2007/10/02)
Thioenone 1 upon excitation to S2 in presence of electron-deficient olefins yields thietanes and the cycloaddition is found to be stereospecific, regioselective, and site specific.
