Synthesis of enantiomerically pure substituted tetrahydrofurans from epoxides and phenylselenium reagents
作者:Marcello Tiecco、Lorenzo Testaferri、Luana Bagnoli、Valentina Purgatorio、Andrea Temperini、Francesca Marini、Claudio Santi
DOI:10.1016/j.tetasy.2003.10.042
日期:2004.2
pure epoxides, enantiomerically pure substituted tetrahydrofurans were prepared using simple conversions promoted by organoselenium reagents. The first step consisted in the opening of the epoxides with phenylselenolate anions to afford hydroxyalkyl phenyl selenides. The PhSe group was then substituted by an allyl group by treatment with allyltributyltin and AIBN. The reaction of these allylic derivatives
从市售对映体纯的环氧化物开始,使用有机硒试剂促进的简单转化制备对映体纯的取代的四氢呋喃。第一步是用苯硒酸根阴离子打开环氧化物,得到羟烷基苯基硒化物。然后通过用烯丙基三丁基锡和AIBN处理将PhSe基团用烯丙基取代。这些烯丙基衍生物与亲电试剂phenylselenium反应得到的含有硒的四氢呋喃作为立体特异性5-的结果外切- trig的环化。最终将由此获得的四氢呋喃衍生物用氢化三苯锡和AIBN进行去硒烯基化。