Perhydro-1,3-benzoxazines derived from (−)-8-aminomenthol as ligands for the catalytic enantioselective addition of diethylzinc to aldehydes
作者:Celia Andrés、Rebeca Infante、Javier Nieto
DOI:10.1016/j.tetasy.2010.07.016
日期:2010.9
The catalytic potency of a series of perhydro-1,3-benzoxazines prepared from (−)-8-aminomenthol was examined in the enantioselective addition of diethylzinc to aldehydes. When (2R,3S,3aS,4aR,6R,8aS)-2-isopropyl-6,9,9-trimethyl-3-phenyldecahydro-4aH-pyrrolo[2,1-b][1,3]benzoxazin-3-ol 7b was used as a chiral ligand, 1-substituted propanols with an (R)-configuration were obtained in high yields and enantiomeric