1,3-Rearrangement of allylic sulphones: Rearrangement-cyclisation of allylic 4-pentenyl sulphones
作者:Eifion D. Phillips、Gordon H. Whitham
DOI:10.1016/s0040-4039(00)60462-8
日期:1993.4
Allylic alkyl sulphones CH2:CHC(Me)2SO2R (RMe, Et, iPr, tBu, CH2SiMe3, CH2CH2SiMe3, and CH2CH(OH)Me underwent 1,3-rearrangement on treatment with benzoyl peroxide in tBuOH. 1,3-Rearrangement did not occur in cases (RCH2Ph, CH2COMe) where the intermediate sulphonyl radical RSO2· could undergo loss of sulphur dioxide to form a resonance-stabilised alkyl radical. Allylic 4-pentenyl sulphones undergo