the synthesis of α‐fluoro‐β‐aminophosphonates by the regioselectivefluorination of α‐hydroxy‐β‐aminophosphonates under mild conditions. The fluorination reactions were mediated by the PyFluor reagent and occurred with the retention of configuration. The main products of this reaction were a series of α‐fluoro‐β‐aminophosphonates, which can be used as precursors in the preparation of medicinally important
DAST mediated preparation of β-fluoro-α-aminophosphonates
作者:Marcin Kaźmierczak、Henryk Koroniak
DOI:10.1016/j.jfluchem.2012.03.016
日期:2012.7
Herein, we report a new and convenient method for the synthesis of beta-fluoro-alpha-aminophosphonates starting from naturally occurring L-amino acids. A key step in the synthetic protocol involves nucleophilic fluorination of N,N-dibenzylated-beta-amino alcohols with diethylaminosulfur trifluoride (DAST). (C) 2012 Elsevier B.V. All rights reserved.