A broad range of N-carbamoylaziridines were obtained and then treated by the diethyl phosphonate anion to afford α-methylene-gem-bisphosphonate aziridines. Study of the reaction’s scope and additional experiments indicates that the transformation proceeds via a new mechanism involving the chelation of lithium ion. This last step is crucial for the reaction to occur and disfavors the aziridine ring-opening. A phosphonate–phosphate rearrangement from a α-hydroxybisphosphonate aziridine intermediate is also proposed for the first time. This reaction provides a simple and convenient method for the synthesis of a highly functionalized phosphonylated aziridine motif.

中文翻译：

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Aminomethylene-的合成宝石-bisphosphonates含有氮丙啶基序：和反应范围的研究洞察机制

获得了广泛的N-氨基甲酰基氮丙啶，然后用二乙基膦酸根阴离子处理，得到α-亚甲基-宝石-双膦酸酯氮丙啶。对反应范围和其他实验的研究表明，转化是通过涉及锂离子螯合的新机理进行的。这最后一步对于反应的发生至关重要，不利于氮丙啶开环。还首次提出了由α-羟基双膦酸酯氮丙啶中间体进行的膦酸酯-磷酸重排。该反应提供了用于合成高度官能化的膦酰化氮丙啶基序的简单方便的方法。