A New and Convenient Asymmetric Synthesis of α-Amino- and α-Alkyl-α-aminophosphonic Acids Using <i>N</i>-<i>tert</i>-Butylsulfinyl Imines as Chiral Auxiliaries
作者:Chengye Yuan、Qianyi Chen
DOI:10.1055/s-2007-990872
日期:2007.12
successfully at room temperature with potassium carbonate as base to afford α-amino- and α-alkyl-α-amino- N-( TERT-butylsulfinyl)phosphonates in good to excellent chemical yield and diastereoselectivity. The major diastereo-mers were separated and smoothly converted into enantiopure α-amino- and α-alkyl-α-aminophosphonic acids.
Asymmetric Synthesis of α-Aminophosphonate Esters by the Addition of Dialkyl Phosphites to tert-Butanesulfinyl Imines
作者:Jonathan Ellman、Hasan Khan
DOI:10.1055/s-0033-1339712
日期:——
Abstract The KHMDS-mediated addition of dialkylphosphites to N-tert-butanesulfinyl aldimines and ketimines proceeds in uniformly high yields and diastereoselectivities and thereby enables the rapid and general asymmetric synthesis of α-aminophosphonate esters. The KHMDS-mediated addition of dialkylphosphites to N-tert-butanesulfinyl aldimines and ketimines proceeds in uniformly high yields and d