Asymmetric Synthesis of Cyclic α-Amino Phosphonates Using Masked Oxo Sulfinimines (<i>N</i>-Sulfinyl Imines)
作者:Franklin A. Davis、Seung H. Lee、He Xu
DOI:10.1021/jo040127x
日期:2004.5.1
Five-, six-, and seven-membered cyclic α-aminophosphonates, amino acid surrogates, are prepared in enantiomerically pure form via the highly diastereomeric addition of metal phosphonates to masked oxo sulfinimines. Hydrolysis of the resulting masked oxo α-aminophosphonates followed by reduction of the intermediate cyclic imino phosphonates affords the title compounds in good yield.