Efficient Access to 2,3-Diarylimidazo[1,2-<i>a</i>]pyridines via a One-Pot, Ligand-Free, Palladium-Catalyzed Three-Component Reaction under Microwave Irradiation
作者:Yuanxiang Wang、Brendan Frett、Hong-yu Li
DOI:10.1021/ol501136e
日期:2014.6.6
ligand-free, Pd(OAc)2-catalyzed, three-component reaction for the synthesis of 2,3-diarylimidazo[1,2-a]pyridines was developed under microwave irradiation. With the high availability of commercial reagents and great efficiency in expanding molecule diversity, this methodology is superior to the existing procedures for the synthesis of 2,3-diarylimidazo[1,2-a]pyridines analogues.
在微波辐射下,开发了一种快速的单锅、无配体、Pd(OAc) 2催化的三组分反应,用于合成 2,3-二芳基咪唑并[1,2- a ]吡啶。由于商业试剂的高可用性和扩展分子多样性的高效率,该方法优于现有的合成 2,3-二芳基咪唑并[1,2- a ]吡啶类似物的方法。
An efficient access to 2,3-diarylimidazo[1,2-a]pyridines via silver(I)-catalyzed C-H bond functionalization
AbstractAn efficient and economic Ag-catalyzed method for the direct cross-coupling of unactivated imidazo[1,2-a]pyridines with arylboronic acids has been developed. This approach leads to the formation of corresponding 2,3-diarylimidazo[1,2-a]pyridine derivatives as biological and pharmaceutical materials of interest in good yields under mild reaction conditions. Graphical abstract
摘要已开发出一种有效且经济的Ag催化方法,用于将未活化的咪唑并[1,2- a ]吡啶与芳基硼酸直接交叉偶联。该方法导致在温和的反应条件下以高收率形成相应的2,3-二芳基咪唑并[1,2- a ]吡啶衍生物,作为感兴趣的生物和制药材料。 图形概要
Regioselective Palladium-Catalyzed Arylation and Heteroarylation of Imidazo[1,2-<i>a</i>]pyridines
作者:Sabine Berteina-Raboin、Jamal Koubachi、Saïd El Kazzouli、Abderrahim Mouaddib、Gérald Guillaumet
DOI:10.1055/s-2006-951562
日期:——
Palladium-catalyzed directarylation and heteroarylation of imidazo[1,2-a]pyridines at the 3-position are described. The optimization of the reaction in conventional heating and the adaptation under microwaves irradiation is reported. The compatibility of the synthesis with the presence of bromo or chloro substituents in the 6-position was investigated.