Stereoselective Grignard-type reactions of chiral N,N-dibenzylamino ketones
摘要:
N-N-Dibenzylamino ketones of the type Bn2N(R-1)CHC(O)R-2, prepared in enantiomerically pure form from alpha-amino acids, undergo non-chelation controlled Grignard-type reactions with RLi, RMgX or RCeCl2 without any undesired racemization. (C) 1999 Elsevier Science Ltd. All rights reserved.
Stereoselective reductive amination of chiral N,N-dibenzylamino ketones
作者:Manfred T. Reetz、Alfred Schmitz
DOI:10.1016/s0040-4039(99)00360-3
日期:1999.4
N,N-Dibenzylamino ketones of the type Bn2N(R)CHC(O)CH3, prepared in enantiomerically pure form from α-amino acids, undergo stereoselective reductive amination using PhCH2NH2/NaCNBH3 or NH4OAc/NaCNBH3 with formation of diastereo- and enantiomerically pure vicinaldiamines Bn2N(R)CHCH(NHCH2Ph)CH3 or Bn2N(R)CHCH(NH2)CH3, respectively.