A Simple and Efficient Access to α-Amino Phosphonates from <i>N</i>-Benzyloxycarbonylamino Sulfones Using Indium(III) Chloride†Studies on Novel Synthetic Methodologies. 188.
作者:Biswanath Das、Kongara Damodar、Nisith Bhunia
DOI:10.1021/jo900558d
日期:2009.8.7
Treatment of N-benzyloxycarbonylamino sulfones with triethyl phosphite catalyzed by InCl3 produces the corresponding protected α-amino phosphonates in high yields (71−92%).
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-aminophosphonates 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