Regioselective N-1 and C-2 diacylation of 3-substituted indoles with arylglyoxal hydrates for the synthesis of indolyl diketones
作者:Dalong Pan、Jinpeng Chu、Xianrui Gao、Cuiping Wang、Qingtao Meng、Haijun Chi、Yan Dong、Chunying Duan、Zhiqiang Zhang
DOI:10.1039/c8ob01776j
日期:——
A highly regioselective N-1 and C-2 diacylation of 3-substituted indoles with arylglyoxal hydrates to afford N-1 and C-2 indolyl diketones in moderate to good yields is described. Notably, the control of regioselectivity is achieved by small changes in the Cu catalyst, additive and solvent. Importantly, the intermediates for N-1 and C-2 diacylation were detected and two plausible pathways were also
描述了3-取代的吲哚与芳基乙二醛水合物的高度区域选择性的N-1和C-2二酰化,以中等至良好的产率提供N-1和C-2吲哚基二酮。值得注意的是,区域选择性的控制是通过Cu催化剂,添加剂和溶剂的微小变化来实现的。重要的是,检测到N-1和C-2二酰化的中间体,并提出了两个可能的途径。