One-Pot Enantioselective Aziridination of Olefins Catalyzed by a Copper(I) Complex of a Novel Diimine Ligand by Using PhI(OAc)2 and Sulfonamide as Nitrene Precursors
作者:Xisheng Wang、Kuiling Ding
DOI:10.1002/chem.200501109
日期:2006.6.2
A novel chiral C(2)-symmetric 1,4-diamine with multistereogenic centers at the backbone of the ligand has been synthesized from cheap natural product D-mannitol through multistep transformations. Its diimine derivative (3 a) was found to be highly effective for the enantioselective control of the copper-catalyzed asymmetric aziridination of olefin derivatives with PhI==NTs as the nitrene source, affording
一种新颖的手性C(2)对称的1,4-二胺在配体的骨架上具有多立体位中心,已经通过廉价的天然产物D-甘露醇通过多步转化合成。发现其二亚胺衍生物(3a)对以Phi == NTs作为氮源的烯烃衍生物的铜催化的烯烃衍生物的不对称叠氮化的对映选择性控制非常有效,从而以良好或优异的收率提供了相应的N-磺酰化的叠氮丙啶衍生物。 ee高达99%(ee =对映体过量)。通过使用磺酰胺/碘代苯二乙酸酯作为腈源,在本工作中发现的催化剂体系也扩展到了一锅对映选择性叠氮化。在这种情况下,