我们在此报告了一种使用容易获得的钠盐(NaCl / NaBr / NaI)作为卤素源和K 2 S 2 O 8(或)oxone作为促进剂的咪唑基稠合杂环卤化的有效方法。以良好或优异的产率获得了各种C-3卤代咪唑并[1,2- a ]吡啶和苯并[d]咪唑并[2,1- b ]噻唑。本发明的卤化方法还以中等至优异的产率扩展到2-氨基吡啶,2-氨基嘧啶,吲哚和异喹啉。
The arylation of imidazo[1,2‐a]pyridine and benzo[d]imidazo[2,1‐b]thiazoles by using diaryliodonium salts has been developed. Potassium tert‐butoxide was used to promote this transition‐metal‐free reaction, which afforded the corresponding products in good to excellent yields.
咪唑的芳基化[1,2一]吡啶和苯并[ d ]咪唑并[2,1- b ]通过使用二芳基碘盐已经开发噻唑。钾叔丁醇是用来促进此过渡金属无反应,得到相应的产品以良好至优异的产量。
Structure-based discovery of potent and selective small-molecule inhibitors targeting signal transducer and activator of transcription 3 (STAT3)
of highly potent and selective STAT3 inhibitors, exemplified by compound 39 with the privileged structure of 2-phenylimidazo[1,2-a]pyridine, which selectivelyinhibits phosphorylation of STAT3 and suppresses subsequent signaling pathway. Moreover, 39 inhibitscell growth, migration and invasion of human triple negative breast cancer (TNBC) cells lines. Consistently, it achieves significant and dose-dependent
A simple and efficient route to 2‐arylimidazo[1,2‐a]pyridines and zolimidine using automated grindstone chemistry
作者:Dharmendra Das、Zigmee T. Bhutia、Padmini C. Panjikar、Amrita Chatterjee、Mainak Banerjee
DOI:10.1002/jhet.4106
日期:2020.11
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 ambienttemperature. The method was successfully used
Preparation of 2-aryl and 2-aryloxymethyl imidazo[1,2-<i>a</i>]pyridines and related compounds
作者:Richard J. Sundberg、D. J. Dahlhausen、G. Manikumar、B. Mavunkel、Atanu Biswas、V. Srinivasan、Fred King、Philip Waid
DOI:10.1002/jhet.5570250119
日期:1988.1
A series of substituted 2-aryl imidazo[1,2-a]pyridines has been prepared in which a variety of substituents are introduced on the 4′-position of the phenyl ring and on the 3, 5, 6 or 7 position of the heterocyclic ring. Most examples have acetamido, bromo, cyano, or formyl substituents at the 4′-position. Analogous imidazo-[2,1-b]fhiazoles and imidazo[1,2-a]pyrimidines have also been prepared. Another
一系列取代的2-芳基咪唑并[1,2-α]吡啶已被制备,其中多种取代基被引入在苯环的4'位和在3,5的,6或7位杂环。大多数实例在4'-位具有乙酰氨基,溴,氰基或甲酰基取代基。还已经制备了类似的咪唑并[ 2,1- b ]噻唑和咪唑并[1,2- a ]嘧啶。制备了由咪唑的4'-甲酰基苯氧基甲基衍生物,吡啶,噻唑,苯并咪唑和环取代的咪唑并[1,2- a ]吡啶的三个位置异构体组成的另一系列化合物。还制备了咪唑和咪唑并[1,2- a ]吡啶的2-(4'-甲酰基苯基乙烯基)衍生物。