68175-07-5Relevant articles and documents
Access to 2-pyridinylamide and imidazopyridine from 2-fluoropyridine and amidine hydrochloride
Chen, Lu,Huang, Shuo,Ji, Xiaoliang,Li, Jiaming,Li, Jian,Li, Yibiao,Liu, Jiasheng,Peng, Shiyong,Zhang, Kun
supporting information, p. 9292 - 9299 (2020/12/03)
Under catalyst-free conditions, an efficient method to synthesize 2-pyridinylamides has been developed, and the protocol uses inexpensive and readily available 2-fluoropyridine and amidine derivatives as the starting materials. Simultaneously, the copper-catalysed approach to imidazopyridine derivatives has been established with high chemoselectivity and regiospecificity. The results suggest that the nitrogen-heterocycles containing iodide substituents can also be compatible for the reaction via the cascade Ullmann-type coupling, and the nucleophilic substitution reaction provides the target products in a one-pot manner.
Gadolinium (III) chloride catalyzed facile synthesis of 2-substituted benzimidazoles under solvent-free conditions
Sathaiah,Venkat Lingaiah,Chandra Shekhar,Ravi Kumar,Raju,Shanthan Rao
, p. 953 - 957 (2015/08/19)
A series of 2-substituted benzimidazoles have been prepared from o-diamines and 1,3-dicarbonyl compounds using Gadolinium chloride as a catalyst under solvent free condition in good yields. Gadolinium chloride has been demonstrated as a mild and efficient catalyst.
Novel strategy for synthesis of substituted benzimidazo[1,2-a]quinolines
Kato, Jun-Ya,Ito, Yutaro,Ijuin, Ryosuke,Aoyama, Hiroshi,Yokomatsu, Tsutomu
supporting information, p. 3794 - 3797 (2013/08/23)
An efficient method for the synthesis of benzimidazo[1,2-a]quinolines under transition-metal-free conditions has been developed through a cascade reaction involving sequential aromatic nucleophilic substitution and intramolecular Knoevenagel condensation reactions. This method is applicable for the synthesis of a wide range of benzimidazo[1,2-a]quinoline derivatives from readily available 2-fluoroarylaldehyde and benzimidazole substrates.