85102-26-7Relevant articles and documents
A multi pathway coupled domino strategy: I2/ TBHP-promoted synthesis of imidazopyridines and thiazoles via sp3, sp2 and sp C-H functionalization
Feng, Lei,Li, Shichen,Ma, Chen,Wang, Xinfeng,Wang, Yishou,Yao, Yiming
, p. 5919 - 5927 (2022/03/31)
I2/TBHP-promoted, one-pot, multi pathway synthesis of imidazopyridines and thiazoles has been achieved through readily available ethylarenes, ethylenearenes and ethynearenes. I2/TBHP as an initiator and oxidant is used to realize the C-H functionalization of this domino reaction. Simple and available starting materials, wide range of functional group tolerance, high potential for drug activity of the products and application in production are the advantageous features of this method.
Diversity-oriented synthesis toward aryl- And phosphoryl-functionalized imidazo[1,2-a]pyridines
Gernet, Aurelie,Sevrain, Nicolas,Volle, Jean-Noel,Ayad, Tahar,Pirat, Jean-Luc,Virieux, David
, p. 14730 - 14743 (2020/11/30)
We report herein an efficient synthesis of diversely polysubstituted imidazo[1,2-a]pyridines, a family of aza-heterocycles endowed with numerous biological properties, through a sequence involving two consecutive palladium-catalyzed cross-coupling reactions. First, we demonstrated that a Hirao coupling occurred straightforwardly in high yields at positions 3, 5, and 6 of imidazopyridine derivatives, giving access to a wide variety of substituted phosphonates, phosphinates, and phosphine oxides. In a second step, direct CH-arylation of phosphorylimidazopyridines with aryl halides was found to be effective and fully selective, leading to 3-aryl-substituted imidazopyridines in moderate to high yields depending on steric hindrance.
Trihaloisocyanuric acids in ethanol: an eco-friendly system for the regioselective halogenation of imidazo-heteroarenes
Neto, José S. S.,Balaguez, Renata A.,Franco, Marcelo S.,de Sá Machado, Victor C.,Saba, Sumbal,Rafique, Jamal,Galetto, Fábio Z.,Braga, Antonio L.
supporting information, p. 3410 - 3415 (2020/07/30)
Herein, we describe an efficient, rapid and benign protocol for the direct C(sp2)-H bond halogenation (Cl, Br, I) of 2-arylimidazo[1,2-a]pyridines using trihaloisocyanuric acids in ethanol. Furthermore, this sustainable protocol was successfull