Synthesis of 3-Arylimidazo[1,2-a]pyridines by a Catalyst-Free Cascade Process
作者:Xiangge Zhou、Zhiqing Wu、Yinyin Pan
DOI:10.1055/s-0030-1260669
日期:2011.7
A simple and efficient protocol to synthesize 3-arylimidazo[1,2-a]pyridines by a catalyst-free cascade process from 2-aminopyridine and 1-bromo-2-phenylacetylene or 1,1-dibromo-2-phenylethene in yields up to 86% is described.
Cobalt-Catalyzed Direct Arylation of Imidazo[1,2-<i>a</i>
]pyridine with Aryl Iodides
作者:Dattatraya A. Babar、Haridas B. Rode
DOI:10.1002/ejoc.202000006
日期:2020.3.31
A practical protocol for the C‐3 arylation of imidazo[1,2‐a]pyridines with aryl/heteroaryl iodides using CoIICl2·6H2O is reported. The reaction can be performed in a Screw‐top V‐Vial® to expedite the synthesis.
报道了使用Co II Cl 2 · 6H 2 O将咪唑并[1,2- a ]吡啶与芳基/杂芳基碘化物进行C-3芳基化的实用协议。可以在Screw-topV-Vial®中进行反应,以加快合成速度。
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.
Rhodium-Catalyzed Highly Regioselective C-H Arylation of Imidazo[1,2-a]pyridines with Aryl Halides and Triflates
作者:Yi Liu、Lin He、Guoqiang Yin、Guojie Wu、Yingde Cui
DOI:10.5012/bkcs.2013.34.8.2340
日期:2013.8.20
Accepted May 13, 2013A convenient Rh-catalyzed C-H arylation of imidazo[1,2-a]pyridines with a variety of aryl halides or triflateshas been reported. This process afforded a range of biaryl compounds in excellent yields and showed highactivity and broad scope. Key Words : Rhodium catalyst, Aryl halides, Regioselective arylation, Imidazo[1,2- a]pyridines, TriflatesIntroductionHeteroaromatics bearing aryl-heteroaryl