Palladium‐Catalyzed Enantioselective Alkenylation of Enelactams Using a Relay Heck Strategy
作者:Qianjia Yuan、Matthew S. Sigman
DOI:10.1002/chem.201902813
日期:2019.8.14
In this report, a palladium-catalyzed redox-relay Heck process to access optically active alkenylated α,β-unsaturated lactams is described. Under mild reaction conditions, electron-deficient alkenyl triflates and electron-rich alkenyl iodonium salts undergo enantioselective and site-selective coupling with enelactams to deliver the products in high yields and excellent enantioselectivities. Furthermore
在该报道中,描述了钯催化的氧化还原-继电器Heck方法,以访问光学活性的链烯基化的α,β-不饱和内酰胺。在温和的反应条件下,缺电子的烯基三氟甲磺酸盐和富电子的烯基碘鎓盐会与烯内酰胺进行对映选择性和位点选择性偶联,从而以高收率和优异的对映选择性传递产物。此外,除了具有生物活性分子的氮杂-goniothalamin之外,所述产物还允许容易地获得天然产物,例如(+)-牛磺酸和(+)-2-epicalvine。