114. Asymmetric syntheses of α-amino acids from α-halogenated 10-sulfonamido-isobornyl esters.
     Oppolzer, W.; Pedrosa, R.; Moretti, R.
     Tetrahedron Lett. 1986, 27, 831-834

Treatment of chiral α-haloesters 2 with NaN₃ gave azidoesters 3 which on successive transesterification and hydrogenolysis furnished α-amino acids 5 and 9 in high e.e.

DOI : 10.1016/S0040-4039(00)84112-X