作者:Liangyao Xu、Keke Meng、Jian Zhang、Yaling Sun、Xiunan Lu、Tingyan Li、Yan Jiang、Guofu Zhong
DOI:10.1039/c9cc04419a
日期:——
An iridium-catalyzed C–H allylation of acrylamides with conjugated dienes was developed, using NH-Ts amide as the directing group. The ligand- and additive-free protocol provided a convenient and atom economic synthesis of branched 1,4-diene skeletons, enabling the tolerance of a wide scope of functionalities such as OMe, F, Cl, Br and CF3. The utility of this protocol is also demonstrated by a preparative
以NH-Ts酰胺为指导基团,开发了铱与共轭二烯催化的CHH丙烯酰胺化反应。不含配体和无添加剂的协议为分支的1,4-二烯骨架提供了方便且原子经济的合成方法,从而能够耐受诸如OMe,F,Cl,Br和CF 3之类的广泛功能。该协议的实用性还通过制备规模以及青蒿酰胺的C–H功能化得到了证明。此外,通过甲基化和水解程序有效地除去了NH-Ts酰胺,以提供1,4-二烯酸。