Stereoselective Gram-Scale Synthesis of (S)-5,5-Dimethyl-4-phenyloxazolidin-2-one
作者:Shigeo Sugiyama、Keitaro Ishii、Satoshi Arai
DOI:10.3987/com-04-10220
日期:——
A stereoselective gram-scale synthesis of (S)-5,5-dimethyl-4-phenyl-oxazolidin-2-one, SuperQuat [(S)-1], is described. The key step is the diastereoselective reduction of (E)-imine (2), which is synthesized from 2-hydroxy-2-methylpropiophenone (4) and (S)-alpha-methylbenzylamine using sodium borohydride and acetic acid to give (1S,alphaS)-2-methyl-1-(alpha-methyl-benzyl)amino-1-phenylpropan-2-ol(5).