Improved facile synthesis of α-amino phosphonates by the reaction of α-amido sulfones with dialkyl trimethyl silyl phosphites catalyzed by Fe(III) chloride
作者:Boyapati Veeranjaneyulu、Biswanath Das
DOI:10.1080/00397911.2016.1270323
日期:2017.3.4
ABSTRACT An improved efficient synthesis of α-amino phosphonates has been discovered by the reaction of N-benzyloxycarbonylamino sulfones with dialkyl trimethyl silyl phosphites in the presence of FeCl3 as a catalyst. The products were formed in high yields (86–94%) within 2–4 h. The catalyst is inexpensive, easily available, and highly active. The unreacted dialkyl trimetyl silyl phosphites can easily
摘要 通过在 FeCl3 作为催化剂存在下,N-苄氧羰基氨基砜与二烷基三甲基甲硅烷基亚磷酸酯的反应,发现了一种改进的 α-氨基膦酸酯合成效率。产物在 2-4 小时内以高产率(86-94%)形成。该催化剂价格低廉、易于获得且活性高。由于其低沸点,未反应的二烷基三甲基亚磷酸甲硅烷基酯可以很容易地从产物中除去。砜可以方便地制备并且通常是稳定的。图形概要