作者:Feng-Ling Wu、Benjamin P. Ross、Ross P. McGeary
DOI:10.1002/ejoc.200901264
日期:2010.4
Epoxides have been transformed in good yields to alkenes by a process involving (i) ring-opening of the epoxide with 2-mercaptobenzothiazole, (ii) oxidation of the derived s-hydroxy thioethers to the corresponding sulfones, and (iii) thermal or base-promoted fragmentation of these sulfones to alkenes. The stereochemistry of the starting epoxide is transfer-red faithfully to the alkene product, because
环氧化物已通过以下过程以良好的收率转化为烯烃,包括 (i) 环氧化物与 2-巯基苯并噻唑的开环,(ii) 衍生的 s-羟基硫醚氧化为相应的砜,以及 (iii) 热或碱- 促进这些砜碎裂成烯烃。由于 SN2 环氧化物开环反应和 s-烷氧基亚磺酸盐中间体的反周面 SO2 消除反应,起始环氧化物的立体化学忠实地转移到烯烃产物上。这种方法可能构成新的烯烃保护基策略的基础。© 2010 Wiley-VCH Verlag GmbH & Co. KGaA。