New chiral auxiliaries derived from β -pinene: Their use in the asymmetric reduction of β-keto-esters
作者:Mário Luiz Vasconcellos、Jean d'Angelo、Didier Desmaele、Paulo R.R. Costa、Dominique Potin
DOI:10.1016/s0957-4166(00)82117-5
日期:1991.1
3-Ketobutyrates 6, derived from chiral auxiliary alcohols 5 - themselves efficiently prepared from beta-pinene 4 - were reduced with zinc borohydride, giving 3-hydroxybutyrates 7 with 2-70 % de, depending on the nature of aryl group in alcohols 5.