A facile three-step synthesis of 1,2-amino alcohols using the Ellman homochiral tert-butylsulfinamide
作者:James C Barrow、Phung L Ngo、Janetta M Pellicore、Harold G Selnick、Philippe G Nantermet
DOI:10.1016/s0040-4039(01)00122-8
日期:2001.3
Addition of organometallic reagents to tert-butylsulfinimines derived from tert-butyldimethylsiloxyacetaldehyde stereoselectively generates protected 1,2-amino alcohols. Removal of the acid labile protecting groups affords amino alcohols in high yield. The predominant diastereomer is opposite to that predicted by the traditional Ellman model; therefore, a chelation model invoking rapid E/Z isomerization of the imine is proposed to rationalize the observed selectivity. (C) 2001 Elsevier Science Ltd. All rights reserved.