Asymmetric Synthesis of α-Phenyl-γ-Hetero-Substituted Isopropyl Sulfonates via Diastereoselective Ring-Opening of γ-Sultones
作者:Dieter Enders、Dirk Iffland
DOI:10.1055/s-2007-983719
日期:2007.6
An efficient route to α-phenyl-γ-hetero (O, S, Se, Cl)-substituted isopropyl sulfonates via S N 2-ring opening of γ-sultones, easily available by asymmetric synthesis from chiral lithiated sulfonates, is described. The title compounds are obtained in very good overall yields of 65-86% over three steps and excellent diastereo- and enantiomeric excesses (de = 94-96%, ee ≥ 98%).
描述了一种通过 γ-磺内酯的 SN 2-开环获得 α-苯基-γ-杂 (O, S, Se, Cl)-取代的异丙基磺酸盐的有效途径,该途径很容易通过手性锂化磺酸盐的不对称合成获得。标题化合物通过三个步骤以非常好的总产率(65-86%)和出色的非对映体和对映体过量(de = 94-96%,ee ≥ 98%)获得。