stereoselective two step sequence for the construction of fused pyrrolidone ring systems has been developed which features the intramolecular [3+2] dipolar cycloaddition of unsaturated azomethine ylides. The ylides are produced upon reaction of aminomethylphosphonates with α,ω-olefinic aldehydes, followed by oxidative removal of the phosphonate ester group using a newly developed method.
已经开发出用于构建稠合
吡咯烷酮环系统的立体选择性两步序列,其特征在于不饱和偶氮甲
亚胺分子内[3 + 2]偶极环加成。当
氨基
甲基膦酸酯与α,ω-烯烃醛反应,然后使用新开发的方法氧化去除
膦酸酯基团时,生成酰基化物。