A facile route to iodohydrins and epoxides by oxidation of olefin-iodine complexes with pyridinium dichromate
作者:Roberto Antonioletti、Maurizio D'Auria、Antonella De Mico、Giovanni Piancatelli、Arrigo Scettri
DOI:10.1016/s0040-4020(01)88685-3
日期:1983.1
Trisubstituted olefins, activated with I2, are changed into iodohydrins and epoxides by pyridinium dichromate. The conversion shows to proceed in regiospecific and stereospecific manner. Moreover some naturally occurring polyenes, submitted to similar treatment, afford selectively only terminal iodohydrins. These latter are converted into the corresponding epoxides through a new and convenient alumina
用I 2活化的三取代的烯烃被重铬酸吡啶鎓转变为碘醇和环氧化物。该转化显示以区域特异性和立体特异性方式进行。而且,经过类似处理的一些天然存在的多烯选择性地仅提供末端碘醇。后者通过新的方便的氧化铝负载反应转化为相应的环氧化物。