Enantioselective synthesis of 1-alkyl-substituted 1-phenyl-1,2-ethanediols using a myrtenal-derived chiral auxiliary
作者:Marı́a Elena Vargas-Dı́az、Luis Chacón-Garcı́a、Pedro Velázquez、Joaquı́n Tamariz、Pedro Joseph-Nathan、L.Gerardo Zepeda
DOI:10.1016/j.tetasy.2003.07.017
日期:2003.10
The enantioselective synthesis of several 1-phenyl-1,2-ethanodiol derivatives using 2-benzoyl-1,3-oxathiane 1 as a chiral auxiliary is described. Nucleophilic additions of Grignard reagents, methyl lithium and LS-Selectride on benzoyloxathiane 1 proceeded in >95% diastereomeric ratio (dr) affording the corresponding tertiary carbinols, which were successively hydrolyzed and reduced to give the title derivatives in >95% enantiomeric excess (ee). (C) 2003 Elsevier Ltd. All rights reserved.