Samarium(II) iodide-mediated deoxygenative debromination of α-bromo-β-hydroxy (acetoxy) phenyl sulfones: synthesis of α,β-unsaturated sulfones
作者:Vichai Reutrakul、Suwatchai Jarussophon、Manat Pohmakotr、Yupa Chaiyasut、Saengvimon U-Thet、Patoomratana Tuchinda
DOI:10.1016/s0040-4039(02)00224-1
日期:2002.3
Deoxygenative debromination of α-bromo-β-hydroxy (acetoxy) phenyl sulfones with samarium(II) iodide led to substituted α,β-unsaturated sulfones in good to excellent yields. The E-isomer is the major product. A possible mechanism via an α-sulfonyl radical pathway is proposed.
α-溴-β-羟基(乙酰氧基)苯砜与碘化sa的脱氧脱溴反应可生成取代的α,β-不饱和砜,收率好至极好。该Ë异构体是主要产物。提出了通过α-磺酰基自由基途径的可能机理。