Stereospecific Transformation of Protected P–H Group into P–O or P–N Group in One-Pot Reaction
作者:Qiuli Yao、Chengye Yuan
DOI:10.1021/jo302140q
日期:2012.12.7
A general and efficient procedure for converting 1,1-diethoxyalkylphosphinates into phosphonates or phosphonamides is described by the application of bromine with moderate to high yields and good purity in a one-pot reaction. H-Phosphinate reacts stereospecifically with bromine and subsequently couples with nucleophile to form the corresponding optically active (RP)-P-1(O)(OEt)X with retention of configuration at the phosphorus center. For alpha-amino-H-phosphinates, the transformation could be realized without the protection of the amino group.