enantiomerically enriched 2H-azirine 3-phosphonates and dienes stereoselectively furnish optically pure, bicyclic aziridine adducts that on hydrogenation afford the first examples of enantiopure quaternary piperidine phosphonates.
[反应:参见文本]对映体富集的2H-
叠氮基3-
膦酸酯和二烯的Diels-Alder反应立体选择性地提供光学纯净的双环
氮丙啶加合物,该加氢化合物在氢化后提供了对映体纯的季
哌啶膦酸酯的第一个实例。