Post-synthetically modified MOF for the A<sup>3</sup>-coupling reaction of aldehyde, amine, and alkyne
作者:Meruyert Kassymova、Alaric de Mahieu、Somboon Chaemchuen、Patrick Demeyere、Bibimaryam Mousavi、Serge Zhuiykov、Mekhman S. Yusubov、Francis Verpoort
DOI:10.1039/c8cy00662h
日期:——
FT-IR, TGA, BET, 1H-NMR, 13C-NMR, EDS, and ICP. The catalyst showed an excellent activity towards the A3-coupling reaction with a broad substrate scope. The A3-coupling reaction was performed under ambient conditions and full conversion was reached within just 1 hour for the model reaction. The heterogeneous silver NHC MOF (Ag-NHC-MOF) catalyst can be recycled and reused at least four times without a
A new, heterogeneous, 4 Å molecular sieve-supported copper(II) catalyst was developed and was used successfully in the A3 coupling of alkynes, aldehydes and amines under simple reaction conditions.
我们开发了一种新型、异质、4 Å 分子筛支撑的铜(II)催化剂,并在简单的反应条件下成功用于炔、醛和胺的 A3 偶联反应。
Phosphine-Free [3+2] Cycloaddition of Propargylamines with Dialkyl Azodicarboxylates: An Efficient Access to Pyrazole Backbone
作者:Jie Liu、Xueshun Jia、Yicheng Zhang
DOI:10.1055/s-0037-1610168
日期:2018.9
cycloaddition reaction of the substituted propargylamines with dialkyl azodicarboxylates at room temperature is described. This reaction provides a new approach to functionalized pyrazoles in good yields and high selectivity. A phosphine-free [3+2] cycloaddition reaction of the substituted propargylamines with dialkyl azodicarboxylates at room temperature is described. This reaction provides a new
Stable mesoporous Fe/TiO2 nanoparticles: A recoverable catalyst for solvent-free synthesis of propargylamine via CH activation
作者:Deepali A. Kotadia、Saurabh S. Soni
DOI:10.1016/j.apcata.2014.09.044
日期:2014.11
Fe-doped mesoporous metal oxides (Fe/MO2, M = Si and Ti) were synthesized with particle size in the range of 10-15 nm via modified sal-gel method. The Fe modified SiO2 and TiO2 have proved to be very efficient catalysts in three-component coupling of aldehydes, alkynes and amines for the solvent-free synthesis of proargylamines. Among the two Fe-doped metal oxide catalysts, Fe/TiO2 gives 94% propargylamine yield at 245W microwave power for few minutes under solvent free condition and found to be a better catalyst. With a Fe/TiO2 heterogeneous catalyst and in the absence of solvent, the proposed process for propargylamine synthesis is green and environmentally benign protocol. (C) 2014 Elsevier B.V. All rights reserved.
Microwave-assisted copper(I) catalyzed A3-coupling reaction: Reactivity, substrate scope and the structural characterization of two coupling products
作者:Vitthalrao S. Kashid、Maravanji S. Balakrishna
DOI:10.1016/j.catcom.2017.09.020
日期:2018.1
of highly efficientcatalyst [Cu(μ − I)2Cu}(PPh3)4] for the synthesis of biologically and pharmaceutically important propargylamine derivatives through microwave assisted A3-coupling reaction is described. The A3-coupling reaction performed under microwave conditions with a catalyst loading of 0.1 mol% produced propargylamines in almost quantitative isolated yields. Most of the reactions were completed