Synthesis, characterization and resolution of racemic (2-methylsulfinyl)phenylphosphonic acid methyl ester via its cinchoninium salts
作者:Christelle Mauger、Serge Masson、Michel Vazeux、Jean-François Saint-Clair、Wanda H. Midura、Josef Drabowicz、Marian Mikolajczyk
DOI:10.1016/s0957-4166(01)00008-8
日期:2001.2
The synthesis of new (2-methylsulfinyl)phenylphosphonic acid methyl and dimethylesters in both racemic and non-racemic forms is reported. Resolution of the racemic phosphonic acid mono-ester 1 was accomplished via diastereomeric salt formation with cinchonine. The absolute stereochemistry of the phosphonic ester products was deduced from asymmetric sulfoxidation experiments and confirmed by chemical