作者:Michaël Depature、Josef Diewok、Jacques Grimaldi、Jacques Hatem
DOI:10.1002/(sici)1099-0690(200001)2000:2<275::aid-ejoc275>3.0.co;2-r
日期:2000.1
A set of allene-tethered benzoyloximes (5) has been treated with nBu3SnH. Depending on their substitution pattern, a wide range of compounds has been obtained. If the stannyl radical adds on the allene, the C-centred radical thus formed undergoes either a 5-exo ring closure to give the cyclopentene derivatives 7 or a 6-endo ring closure onto the N atom to give the dihydropyridines 8. If the stannyl
一组丙二烯系苯甲酰肟 (5) 已用 nBu3SnH 处理过。根据它们的取代模式,已经获得了广泛的化合物。如果甲锡基自由基加成在丙二烯上,则由此形成的以 C 为中心的自由基经历 5-外环闭合以产生环戊烯衍生物 7 或在 N 原子上进行 6-内环闭合以产生二氢吡啶 8。如果甲锡基自由基添加到苯甲酰基部分,形成亚胺基自由基,导致 3H-吡咯 9 和亚烷基-吡咯啉 10。空间效应和极性效应是控制反应过程的因素。