In(OTf)<sub>3</sub>-catalyzed <i>N</i>-α phosphonylation of <i>N</i>,<i>O</i>-acetals with triethyl phosphite
作者:Jian-Ting Sun、Xin Li、Tian-Yu Yang、Min Lv、Ling-Yan Chen、Bang-Guo Wei
DOI:10.1039/d2ob01196d
日期:——
A practical approach to α-aminophosphonates has been developed through an In(OTf)3-catalyzed N-α phosphonylation of N,O-acetals with triethyl phosphite 7. Indoline and isoindoline N,O-acetals 6a–6j and 9a–9j and chain N,O-acetals 11a–11p were subjected to a Lewis acid catalyzed N-α phosphonylation process. As a result, the desired α-aminophosphonates 8a–8j, 10a–10j and 12a–12p were obtained in moderate
通过 In(OTf) 3 -催化N,O-缩醛与亚磷酸三乙酯7的N -α 膦酰化,开发了一种实用的 α-氨基膦酸盐方法。二氢吲哚和异二氢吲哚N、O-缩醛6a-6j和9a-9j以及链N、O-缩醛11a-11p经受路易斯酸催化的N - α 膦酰化过程。结果,以中等至良好的产率获得了所需的 α-氨基膦酸盐8a-8j、10a-10j和12a-12p 。