893710-50-4Relevant academic research and scientific papers
Visible light-mediated photocatalytic bromination of 2-arylimidazo[1,2-a]pyridines using CBr4 as bromine source
Lee, Ju Hui,Jung, Hye Im,Kim, Dae Young
, p. 197 - 206 (2020)
The photocatalytic bromination of 2-arylimidazo[1,2-a]pyridines is described in this paper. This reaction uses the readily accessible and shelf-stable CBr4 as a bromine source. This photocatalytic system is shown to serve as a convenient and pr
Ultrasound-Promoted and Base-Mediated Regioselective Bromination of Imidazo[1,2- a ]pyridines with Pyridinium Tribromide
Jiang, Hongmei,Guo, Dingyi,Zhang, Yixin,Shen, Qin-Peng,Tang, Shiyun,You, Junheng,Huo, Yi,Wang, Huixian,Gui, Qing-Wen
, p. 2713 - 2720 (2020/09/15)
By using pyridinium tribromide as the bromo source, an efficient- and practical protocol for the synthesis of C3-brominated imidazo-[1,2- a ]pyridines through ultrasound-promoted and Na 2CO 3-mediated regioselective bromination of im
Hypervalent Iodine Mediated Efficient Solvent-Free Regioselective Halogenation and Thiocyanation of Fused N -Heterocycles
Alla, Manjula,Indukuri, Divakar Reddy,Potuganti, Gal Reddy
supporting information, p. 1573 - 1579 (2019/08/07)
A facile, rapid, metal-free regioselective halogenation and thiocyanation of imidazo[1,2- a ]pyridine/pyrimidine heterocycles has been achieved under solvent-free reaction conditions. Halogenations and thiocyanation of the heterocycles could be accomplish
Synergy of Anodic Oxidation and Cathodic Reduction Leads to Electrochemical C—H Halogenation
Zhou, Zhilin,Yuan, Yong,Cao, Yangmin,Qiao, Jin,Yao, Anjin,Zhao, Jing,Zuo, Wanqing,Chen, Wenjie,Lei, Aiwen
supporting information, p. 611 - 615 (2019/05/10)
We herein uncovered an electrochemical C—H halogenation protocol that synergistically combines anodic oxidation and cathodic reduction for C—X bond formation. The reaction was demonstrated under exogenous-oxidant-free conditions. Moreover, this is the first example of activating CBr4, CHBr3, and CCl3Br under electrochemical conditions.
K2S2O8-Mediated halogenation of 2-arylimidazo[1,2-a]pyridines using sodium halides as the halogen sources
Katrun, Praewpan,Kuhakarn, Chutima
supporting information, p. 989 - 993 (2019/03/11)
A convenient halogenation of 2-arylimidazo[1,2-a]pyridines using sodium chloride/bromide/iodide as the halogen sources in the presence of K2S2O8 as an easy-to-handle oxidizing agent was developed. The present work offers a
Chemodivergent synthesis of: N -(pyridin-2-yl)amides and 3-bromoimidazo[1,2- a] pyridines from α-bromoketones and 2-aminopyridines
Liu, Yanpeng,Lu, Lixue,Zhou, Haipin,Xu, Feijie,Ma, Cong,Huang, Zhangjian,Xu, Jinyi,Xu, Shengtao
, p. 34671 - 34676 (2019/11/13)
N-(Pyridin-2-yl)amides and 3-bromoimidazo[1,2-a]pyridines were synthesized respectively from α-bromoketones and 2-aminopyridine under different reaction conditions. N-(Pyridin-2-yl)amides were formed in toluene via C-C bond cleavage promoted by I2/s
Copper-Mediated Aerobic Oxidative Synthesis of 3-Bromo-imidazo[1,2-a]pyridines with Pyridines and Enamides
Zhou, Xiaoqiang,Yan, Hao,Ma, Chaowei,He, Yongqin,Li, Yamin,Cao, Jinhui,Yan, Rulong,Huang, Guosheng
, p. 25 - 31 (2016/01/15)
A conversion of pyridines and enamides for the synthesis of 3-bromo-imidazo[1,2-a]pyridines was developed by copper-mediated aerobic oxidative coupling in a one-pot manner. This procedure tolerates various functional groups and affords a series of 3-bromo
Oxidative bromination of imidazoheterocycle bromohydrates
Kovalenko,Cherepakha,Kutrov,Shishkin,Shishkina
experimental part, p. 1280 - 1285 (2012/07/27)
The behavior of imidazo[1,2-a]pyridinium, imidazo[1,2-a]pyrimidinium, and imidazo[2,1-b]thiazolium bromides derivatives in oxidative bromination reactions has been studied. It has been established that reaction products structures and their yields depend on the properties of the substituents in the bicycle and the oxidant concentration. 0009-3122/12/4710-12802012 Springer Science+Business Media, Inc.
