作者:Dieter Enders、Krzysztof Hoffman
DOI:10.1002/ejoc.200801202
日期:2009.4
reactivity of α,β-unsaturated sulfonates and aromaticthiols in an organocatalyzed sulfa-Michael addition was explored. Bifunctional chiral thiourea catalysts were found to promote the reaction, and the corresponding Michael adducts were afforded in moderate to good yields (24–92 %) and with moderate levels of asymmetric induction (33–64 % ee). This study represents the first use of α,β-unsaturated
探讨了 α,β-不饱和磺酸盐和芳香硫醇在有机催化的磺胺-迈克尔加成反应中的反应性。发现双功能手性硫脲催化剂可促进反应,相应的迈克尔加合物以中等至良好的产率(24-92%)和中等水平的不对称诱导(33-64%ee)提供。该研究代表了 α,β-不饱和磺酸盐在催化不对称迈克尔加成中的首次使用。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)