Lewis Acid Catalyzed C-N Bond Formation: Synthesis of Quinoxalines via CuX (X = Cl, Br, I) Catalyzed Cyclotrimerization of Alkynes with o-Phenylendiamines
作者:Ying Liang、Pei-Zhen Liu、Chan-Cui Wu、Qian Zhang
DOI:10.14233/ajchem.2015.18532
日期:——
An efficient one-pot cycloisomerization reaction has been developed for the synthesis of quinoxaline derivatives from alkynes and o-phenylendiamines using CuX (X = Cl, Br, I) as a catalyst. This method provides a flexible and rapid route to synthesize quinoxaline derivatives.
Coordinated assembly of a new 3D mesoporous Fe<sub>3</sub>O<sub>4</sub>@Cu<sub>2</sub>O–graphene oxide framework as a highly efficient and reusable catalyst for the synthesis of quinoxalines
作者:Zhiyi Wang、Guowen Hu、Jian Liu、Weisheng Liu、Haoli Zhang、Baodui Wang
DOI:10.1039/c5cc00250h
日期:——
A novel 3D mesoporous Fe3O4@Cu2O–graphene oxide framework as a highly efficient and reusable catalyst was synthesized.
A novel way of synthesizing quinoxalines efficiently through cyclization of o-phenylenediamine and terminal alkyne by Cu(II) and bases is developed. This reaction proceeds smoothly to give the products in moderate to good yields.