作者:Edvinas Orentas、Gintautas Bagdžiūnas、Ulf Berg、Albinas Žilinskas、Eugenijus Butkus
DOI:10.1002/ejoc.200700241
日期:2007.9
The enantiospecific synthesis of several bicyclic enones starting from enantiomerically pure (+)-(1S,5S)-bicyclo[3.3.1]-nonane-2,6-dione (1) was accomplished. The target enones 7-9 were obtained in high yield and purity by using a catalytic amount of benzeneselenic anhydride. (+)-(1S,5R)-bicy-clo[3.3.1]inonane-2,3,6-trione was obtained from diketone 1 by alpha-hydroxylation involving the use of iodine
从对映体纯的 (+)-(1S,5S)-双环 [3.3.1]-壬烷-2,6-二酮 (1) 开始,完成了几种双环烯酮的对映特异性合成。通过使用催化量的苯硒酸酐以高收率和高纯度获得目标烯酮7-9。(+)-(1S,5R)-bicy-clo[3.3.1]inonane-2,3,6-trione 是通过 α-羟基化从二酮 1 获得的,包括在碱性条件下使用碘。该反应包括通过氧杂三环[4.3.1.0(3,8)]decane-10-one的闭环/重开序列。结果表明后一种三酮以烯酮/烯醇形式存在。