570361-36-3Relevant academic research and scientific papers
2-Aminopyridines as an α-Bromination Shuttle in a Transition Metal-Free One-Pot Synthesis of Imidazo[1,2-a]pyridines
Roslan, Irwan Iskandar,Ng, Kian-Hong,Chuah, Gaik-Khuan,Jaenicke, Stephan
supporting information, p. 364 - 369 (2016/04/26)
A wide range of imidazo[1,2-a]pyridines are accessible from cheap and readily available 2-aminopyridines and 1,3-dicarbonyl compounds using a unique CBrCl3/2-aminopyridine system for bromination at the α-carbon. 2-Aminopyridine is not only the substrate but also acts as a bromination shuttle, transferring the bromine atom from CBrCl3 to the α-carbon of the 1,3-dicarbonyl. The reaction mechanism involves a series of reversible steps, including an addition reaction with cyclic transition state, to form a bromo-hemiaminal intermediate. Isolated yields of up to 97% were obtained under mild conditions and at short reaction times in this transition metal-free, one-pot synthesis.
Synthesis and characterisation of novel N substituted 2-methylimidazo[1,2a] pyridine-3-carboxamides
Han, Tao,Shi, Zhichuan,Peng, Yongle,Zhao, Zhigang
experimental part, p. 243 - 245 (2011/07/08)
A series of novel N substituted 2-methylimidazo[1,2a]pyridine-3- carboxamides has been synthesised in high yield by a convenient method and characterised by 1H NMR, MS, IR and elemental analysis.
