在没有任何催化剂的情况下通过离子液体中的三组分反应轻松合成呋喃并[3,4- e ]吡唑并[3,4- b ]吡啶-5(7 H)-一衍生物
摘要:
一系列呋喃并[3,4- e ]吡唑并[3,4- b ]吡啶-5(7 H)-一和茚并[2,1- e ]吡唑并[3,4- b ]吡啶-5(1通过醛的三组分反应合成了H)-一衍生物,5-氨基吡唑和tetronic酸或无需任何催化剂的离子液体中的1,3-茚满二酮。产品的结构已通过光谱数据确定,并通过X射线衍射分析进一步证实。该方法的优点是后处理更容易,反应条件温和,产率高以及对环境无害。J. Heterocyclic Chem。,46,469(2009)。
Aqua mediated indium(III) chloride catalyzed synthesis of fused pyrimidines and pyrazoles
作者:Jitender M. Khurana、Ankita Chaudhary、Bhaskara Nand、Anshika Lumb
DOI:10.1016/j.tetlet.2012.04.001
日期:2012.6
The utilization of water as solvent and indium trichloride as promoter for the three-component combinatorial synthesis of a variety of bioactive pyrimidine and pyrazole derivatives (2–10) from aldehydes, 1,3-dicarbonyl compounds, and electron-rich amino heterocycles like 6-amino-1,3-dimethyl uracil and 3-methyl-1-phenyl-1H-pyrazol-5-amine catalyzed by indium trichloride under reflux has been studied
Three-Component One-Pot Synthesis of Indeno[2′,1′:5,6]Pyrido[2,3-<i>d</i>]Pyrazole Derivatives in Aqueous Media
作者:Da-Qing Shi、Jing-Wen Shi、Hao Yao
DOI:10.1002/jccs.200900075
日期:2009.6
A series of indeno[2′,1′:5,6]pyrido[2,3‐d]pyrazoles was synthesized by the three‐component reaction of aldehyde, 5‐amino‐3‐methyl‐1‐phenylpyrazole and 1,3‐indenedione in the presence of SDS in aqueousmedia. The structures were characterized by IR, 1H NMR, high resolution mass spectra and were further confirmed by X‐ray diffraction analysis.
通过醛,5-氨基-3-甲基-1-1-苯基吡唑和1,3的三组分反应合成了一系列茚并[2',1':5,6]吡啶基[2,3- d ]吡唑-在水介质中存在SDS的茚二酮。结构经IR,1 H NMR,高分辨率质谱表征,并通过X射线衍射分析进一步证实。
A novel and efficient one-pot synthesis of furo[3′,4′:5,6]pyrido[2,3-c]pyrazole derivatives using organocatalysts
作者:Chun-Ling Shi、Da-Qing Shi、Sung Hong Kim、Zhi-Bin Huang、Shun-Jun Ji、Min Ji
DOI:10.1016/j.tet.2007.12.053
日期:2008.3
A novel approach to one-pot synthesis of dihydrofuro[3′,4′:5,6]pyrido[2,3-c]pyrazole and indeno[2′,1′:5,6]pyrido[2,3-c]pyrazole derivatives have been investigated using organocatalysts that are recyclable. This new protocol has the advantages of environmental friendliness, higher yield, low cost, as well as convenient operation. The catalytic efficiency of various small organocatalysts such as l-proline
一锅合成二氢呋喃[3',4':5,6]吡啶[2,3- c ]吡唑和茚并[2',1':5,6]吡啶[2,3- c]的新方法已经使用可回收的有机催化剂研究了对吡唑衍生物。该新协议具有环境友好,产量高,成本低以及操作方便的优点。还研究了各种小的有机催化剂,例如l-脯氨酸,反式-4-羟基-1-脯氨酸,l-硫代脯氨酸,辛可尼定,(+)-辛可宁和dl-2-苯基甘氨酸的催化效率。
Pyrazolo-fused 4-azafluorenones as key reagents for the synthesis of fluorescent dicyanovinylidene-substituted derivatives
4-azafluorenones (indeno[1,2-b]pyrazolo[4,3-e]pyridines, IPP) 4a–x via the three-component reaction between indan-1,3-dione (1), benzaldehydes 2 and 5-amino-1-arylpyrazoles 3 is described. These compounds were successfully used as precursors of the novel dicyanovinylidene derivatives 7a–d containing different acceptor (A) or donor (D) aryl groups at position 4 of its fused system. The structures of products