4044-95-5Relevant academic research and scientific papers
Oxidative C-H/C-H Annulation of Imidazopyridines and Indazoles through Rhodium-Catalyzed Vinylene Transfer
Ghosh, Koushik,Nishii, Yuji,Miura, Masahiro
, p. 3547 - 3550 (2020)
Transition-metal-catalyzed C-H activation followed by oxidative annulation with alkynes has been an efficient synthetic tool for the assembly of various polyaromatic scaffolds. Despite the substantial progress in this field, it is still a significant chal
Structural Determinants for the Mode of Action of Imidazopyridine DS2 at δ-Containing γ-Aminobutyric Acid Type A Receptors
Rostrup, Frederik,Falk-Petersen, Christina B.,Harpsoe, Kasper,Buchleithner, Stine,Conforti, Irene,Jung, Sascha,Gloriam, David E.,Schirmeister, Tanja,Wellendorph, Petrine,Frolund, Bente
, p. 4730 - 4743 (2021/05/06)
Despite the therapeutic relevance of δ-containing γ-aminobutyric acid type A receptors (GABAARs) and the need for δ-selective compounds, the structural determinants for the mode and molecular site of action of δ-selective positive allosteric modulator imi
Metal-free oxidative decarbonylative halogenation of fused imidazoles
Kumar, Gulshan,Shankar, Ravi,Singh, Davinder,Tali, Javeed Ahmad
, p. 20551 - 20555 (2021/11/23)
An efficient strategy has been developed for the deformylative halogenation of carbaldehyde imidazo-fused heterocycles in the presence of TBHP controlled by temperature. A convenient and sequential functionalization (C8 to C3) portrays the synthetic utility of the current method.N-Heterocycle benzamide products were also observedviathe ring opening of imidazopyridines through the cleavage of C-C bond at high temperatures. Features of this method include temperature-controlled excellent regioselectivity, mild conditions and functional group tolerance.
Preparation method of C-3 haloimidazolium [1,2-a] pyridine derivative
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Paragraph 0024-0025, (2022/01/08)
The present invention discloses a method for preparing a C-3 haloimidazolium [1,2-a] pyridine derivative, belonging to the field of organic synthesis. The method took imidazolium [1,2-a] pyridine as the starting material, halide cuprous as the halogen sou
Difluorinative-hydroxylation and C-3 functionalization (halogenation/SCN/NO) of imidazopyridine using Selectfluor as fluorine source or oxidant respectively
Balasubramanian, Sridhar,Kalari, Saradhi,Rode, Haridas B.
supporting information, (2021/04/15)
An efficient route for the difluorinative-hydroxylation through dearomative difunctionalization of imidazopyridine using Selectfluor as fluorine source has been developed in an aqueous medium. The reaction proceeds through ionic followed by radical pathwa
Metal-free regioselective bromination of imidazo-heteroarenes: The dual role of an organic bromide salt in electrocatalysis
Raha Roy, Sudipta,Roy, Vishal Jyoti,Sen, Partha Pratim
supporting information, p. 5687 - 5695 (2021/08/16)
This paper represents an electrochemical transformation by demonstrating the dual role of an organic bromide salt, i.e., tetra-n-butylammonium bromide (TBAB), as a brominating agent and as an electrolyte for the regioselective bromination of several imida
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
A simple and efficient route to 2-arylimidazo[1,2-a]pyridines and zolimidine using automated grindstone chemistry
Das, Dharmendra,Bhutia, Zigmee T.,Panjikar, Padmini C.,Chatterjee, Amrita,Banerjee, Mainak
, p. 4099 - 4107 (2020/09/09)
A green and efficient mechanochemical method for the synthesis of a series of 2-arylimidazo[1,2-a]pyridines was developed using an electrical grinder. I2 catalyzed mechanochemical grinding facilitates the cyclocondensation reaction between various aryl methyl ketones and 2-aminopyridines to afford 2-arylimidazo[1,2-a]pyridines in good yields at ambient temperature. The method was successfully used for the gram-scale synthesis of a marketed drug, zolimidine. The noticeable advantages of this environmentally sustainable protocol include mild conditions, simple instrumentation, inexpensive catalyst, atom economy, short reaction time etc.
Electrochemical oxidative iodination of imidazo[1,2-a]pyridines using NaI as iodine source
Park, Jin Wha,Kim, Yong Hwan,Kim, Dae Young
supporting information, p. 710 - 718 (2020/01/31)
An electrochemical oxidative iodination of imidazo[1,2-a]pyridines is achieved in this study. This reaction utilizes NaI as an iodine source and a supporting electrolyte under metal-free and exogenous chemical oxidant-free reaction conditions. The present
C3-site halogenation method of 2-phenylimidazo [1, 2-alpha] pyridine compound
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Paragraph 0024-0028, (2020/04/22)
The invention belongs to the technical field of organic synthesis, and specifically relates to a C3 site halogenation method of a 2-phenylimidazo [1, 2-alpha] pyridine compound, and the method comprises the following steps: in an air environment, by using
