作者:David B. Berkowitz、Quanrong Shen、Jun-Ho Maeng                                    
                                    
                                        DOI:10.1016/s0040-4039(00)78242-6
                                    
                                    
                                        日期:1994.8
                                    
                                    The synthesis of the (alpha,alpha-difluoroalkyl)phosphonate analogue of L-phosphoserine, 5, in a form appropriate for solid phase peptide synthesis, is reported. Two independent routes are described, starting from L-serine or (R)-isopropylideneglycerol. In each case, PCF2-C bond formation is achieved by triflate displacement with diethyl lithiodifluoromethylphosphonate.