Efficient One-Pot Three-Component Synthesis of Fused Pyridine Derivatives in Ionic Liquid
作者:Zhibin Huang、Yu Hu、Yao Zhou、Daqing Shi
DOI:10.1021/co1000162
日期:2011.1.10
An efficient one-pot synthesis of fused pyridine derivatives (including pyrazolo[3,4-b]pyridine and pyrido[2,3-d]pyrimidine) by three-component reaction of aldehyde, acyl acetonitrile, and electron-rich amino heterocycles (including aminopyrazole and aminouracils) in ionicliquid is reported. This new protocol has the advantages of environmental friendliness, higher yields, shorter reaction times,
通过醛,酰基乙腈和富电子氨基杂环的三组分反应,有效地一锅合成熔融的吡啶衍生物(包括吡唑并[3,4- b ]吡啶和吡啶[2,3- d ]嘧啶)包括离子液体中的氨基吡唑和氨基尿嘧啶在内。该新方案具有环境友好,产率高,反应时间短和操作方便的优点。
Catalyst free synthesis of fused pyrido[2,3-d]pyrimidines and pyrazolo[3,4-b]pyridines in water
作者:Abbas Rahmati、Zahra Khalesi
DOI:10.1016/j.cclet.2012.08.009
日期:2012.10
A one-pot, three-component condensation reaction of an aldehyde, benzoyl acetonitrile (3-oxo-3-phenylpropane nitrile) and 6-amino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione or 3-methyl-1-phenyl-1H-pyrazol-5-amine in water to give fused pyrido[2,3-d]pyrimidines and pyrazolo[3,4-b]pyridines in high yields without any catalyst, is described. (C) 2012 Abbas Rahmati. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
Synthesis of poly(pyrazolopyridine)s by Hantzsch multicomponent polymerization
This work concerns the synthesis of poly(pyrazolopyridine)s via a three-component Hantzsch reaction. The first part of this study was intended to determine adequate experimental conditions for the synthesis of an analytically pure pyrazolopyridine heterocycle model compound in quantitative yield, which can be further used for polymersynthesis. For this purpose, the effect of different parameters (solvent