作者:Mohammed I.M Wazeer、Herman P Perzanowski、Sajid I Qureshi、Mohammad B Al-Murad、Sk Asrof Ali
DOI:10.1016/s0040-4020(00)00574-3
日期:2000.9
The stereochemistry and reactivity of the cycloaddition reactions of a heterocyclic nitrone, 2,3,4,5,-tetrahydropyrazine 1-oxide, have been studied. The heterocyclic nitrone is found to be more reactive than its carbocyclic counterpart. The nitrone underwent regio- and stereo-selective cycloaddition reaction with several alkenes to afford bicyclic isoxazolidines efficiently. Barriers to nitrogen inversion
研究了2,3,4,5,-四氢吡嗪1-氧化物杂环硝酮的环加成反应的立体化学和反应性。发现杂环硝酮比其碳环对应物更具反应性。硝酮与几种烯烃进行区域和立体选择性环加成反应,以有效地提供双环异恶唑烷。已经确定了环加合物中氮转化的障碍。