Step-Economical Synthesis of Tetrahydroquinolines by Asymmetric Relay Catalytic Friedländer Condensation/Transfer Hydrogenation
作者:Lei Ren、Tao Lei、Jia-Xi Ye、Liu-Zhu Gong
DOI:10.1002/anie.201106808
日期:2012.1.16
Two steps in one reaction: The title relay reaction relies on a combination of an achiral Lewis acid and a chiral Brønsted acid (B*‐H in the scheme). This one‐pot method provides access to tetrahydroquinoline derivatives with multiple continuous stereogenic centers in high stereoselectivity (>20:1 d.r., 98 % ee).
一个反应分两个步骤:标题中继反应依赖于非手性路易斯酸和手性布朗斯台德酸(方案中的B * ‐H)的组合。这种一锅法可提供具有高立体选择性(> 20:1 dr,98%ee)的具有多个连续立体中心的四氢喹啉衍生物 。