The synthesis of racemic N-phthalyl beta 2-homoarylglycines 5 and their asymmetric transformation have been investigated. The key step is the stereoselective addition of the (R)-pantolactone to the corresponding prochiral ketene 7.
The synthesis of racemic N-phthalyl beta 2-homoarylglycines 5 and their asymmetric transformation have been investigated. The key step is the stereoselective addition of the (R)-pantolactone to the corresponding prochiral ketene 7.
Synthesis of (S)-N-Boc-3-Amino-2-Arylpropanol from Optically Active β-Amino Esters
作者:Monique Calmès、Françoise Escale、Jean Martinez
DOI:10.1055/s-2001-15237
日期:——
The reduction of various (αS,3"R)-pantolactonyl-2-aryl-3-phthalimidopropanoates 3 followed by an acidic treatment and direct N-Boc protection afforded the corresponding (S)-N-Boc-3-amino-2-arylpropanols 4 in good yield and without loss of the optical purity.