Asymmetric catalytic aza-Morita–Baylis–Hillman reaction for the synthesis of 3-substituted-3-aminooxindoles with chiral quaternary carbon centers
作者:Fang-Le Hu、Yin Wei、Min Shi、Suresh Pindi、Guigen Li
DOI:10.1039/c3ob27495k
日期:——
The asymmetric catalytic aza-Morita–Baylis–Hillman (aza-MBH) reaction of isatin-derived ketimines with MVK has been established by using chiral amino and phosphino catalysts. The reaction resulted in biomedically important 3-substituted 3-amino-2-oxindoles in good yields (>80% for most cases) and with excellent enantioselectivity (90–99% ee). Twenty-eight cases assembled with chiral quaternary stereogenic
已经通过使用手性氨基和膦基催化剂建立了靛红衍生的酮亚胺与 MVK的不对称催化aza -Morita-Baylis-Hillman ( aza -MBH) 反应。该反应产生了生物医学上重要的 3-取代 3-氨基-2-羟吲哚,收率良好(大多数情况下>80%)和优异的对映选择性(90-99% ee)。已在方便的系统下检查了 28 个由手性四元立体中心组装的病例。