1498-82-4Relevant academic research and scientific papers
Magnetic MIL-101-SO3H: A highly efficient bifunctional nanocatalyst for the synthesis of 1,3,5-triarylbenzenes and 2,4,6-triaryl pyridines
Boroujeni, Mahmoud Borjian,Hashemzadeh, Alireza,Faroughi, Mohammad-Tayeb,Shaabani, Ahmad,Amini, Mostafa Mohammadpour
, p. 100195 - 100202 (2016)
A magnetic MIL-101-SO3H was synthesized and successfully used as a highly active nanocatalyst for the synthesis of 1,3,5-triarylbenzenes and 2,4,6-triaryl pyridines. The prepared nanocatalyst was characterized by Fourier transform infrared spec
Highly efficient, one-pot, solvent-free synthesis of 2,4,6-triarylpyridines using a bronsted-acidic ionic liquid as reusable catalyst
Davoodnia, Abolghasem,Bakavoli, Mehdi,Moloudi, Raheleh,Tavakoli-Hoseini, Niloofar,Khashi, Maryam
, p. 867 - 870 (2010)
A simple, efficient, and green method for synthesis of 2,4,6- triarylpyridines by one-pot three-component reaction of acetophenones, aryl aldehydes, and ammonium acetate using 3-methyl-1-(4-sulfonylbutyl)imidazolium hydrogen sulfate [HO3S(CH2)4MIM][HSO 4], a Bronstedacidic ionic liquid, as an effective and reusable catalyst under solvent-free conditions is described. This method has several advantages, for example simple procedure with an easy work-up, shorter reaction times, and high yields. Springer-Verlag 2010.
Solid acid catalyst TS-1 zeolite-assisted solvent-free one-pot synthesis of poly-substituted 2,4,6-triaryl-pyridines
Gadekar, Sachin P.,Lande, Machhindra K.
, p. 3267 - 3278 (2018)
Abstract: A new method is described for one-pot solvent-free synthesis of 2,4,6-triaryl pyridines in the presence of a solid acid catalyst, titanium silicate (TS-1) via cyclocondensation of acetophenone, aryl aldehyde and ammonium acetate. The present method illustrates several advantages, such as eco-friendly reaction conditions, simplicity, short reaction time (3?h), easy separation of catalyst and high yields of the products (85–93%). Furthermore, the TS-1 catalyst was reused for four catalytic cycles with consistent catalytic activity. Graphical Abstract: [Figure not available: see fulltext.].
Three-components condensation catalyzed by molecular iodine for the synthesis of 2,4,6-triarylpyridines and 5-unsubstituted-3,4-dihydropyrimidin- 2(1H)-ones under solvent-free conditions
Ren, Yi-Ming,Cai, Chun
, p. 49 - 52 (2009)
One-pot, three-components synthesis of 2,4,6-triarylpyridines and 5-unsubstituted-3,4-dihydropyrimidin-2(1H)-ones was performed under solvent-free conditions using molecular iodine as the catalyst in moderate to good product yields.
A solvent-free reaction between acetophenone oximes and epoxy styrenes: An efficient synthesis of 2,4,6-triarylpyridines under neutral conditions
Mahernia, Shabnam,Adib, Mehdi,Mahdavi, Mohammad,Nosrati, Meisam
, p. 3844 - 3846 (2014)
An efficient synthesis of 2,4,6-triarylpyridines is described which involves heating a mixture of an acetophenone oxime and an epoxy styrene under neutral, solvent-free conditions. Kr?hnke pyridine products are obtained in excellent yields.
Heteroatom-Embedded Approach to Vinylene-Linked Covalent Organic Frameworks with Isoelectronic Structures for Photoredox Catalysis
Bi, Shuai,Chen, Jie-Sheng,Meng, Fancheng,Wu, Dongqing,Zhang, Fan,Zhang, Zixing
supporting information, (2021/12/23)
Embedding heteroatoms into the main backbones of polymeric materials has become an efficient tool for tailoring their structures and improving their properties. However, owing to comparatively harsh heteroatom-doping conditions, this has rarely been explo
Convenient one-pot synthesis of 1,2,4-oxadiazoles and 2,4,6-triarylpyridines using graphene oxide (GO) as a metal-free catalyst: Importance of dual catalytic activity
Basak, Puja,Dey, Sourav,Ghosh, Pranab
, p. 32106 - 32118 (2021/12/02)
A convenient and efficient process for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles and 2,4,6-triarylpyridines has been described using an inexpensive, environmentally benign, metal-free heterogeneous carbocatalyst, graphene oxide (GO). GO plays a dual role of an oxidizing agent and solid acid catalyst for synthesizing 1,2,4-oxadiazoles and triarylpyridines. This dual catalytic activity of GO is due to the presence of oxygenated functional groups which are distributed on the nanosheets of graphene oxide. A broad scope of substrate applicability and good sustainability is offered in this developed protocol. The results of a few control experiments reveal a plausible mechanism and the role of GO as a catalyst was confirmed by FTIR, XRD, SEM, and HR-TEM analysis.
Synthesis of Kr?hnke pyridines through iron-catalyzed oxidative condensation/double alkynylation/amination cascade strategy
Gopalaiah, Kovuru,Choudhary, Renu
supporting information, (2021/09/15)
An efficient protocol for the synthesis of symmetrical and unsymmetrical 2,4,6-trisubstituted pyridines via oxidative cascade annulation of arylacetylenes with benzylamines has been developed. The reaction proceeds smoothly utilizing iron(II) triflate as a catalyst and molecular oxygen as an oxidant with broad substrate scope. Mechanistic studies reveal that the reaction may be experiences an oxidative condensation followed by double alkynylation and amination process.
Pyridine Skeleton Synthesis Using Acetonitrile as C4N1 Units and Solvent
Bai, Chaolumen,Guo, Huifang,Liu, Xin,Liu, Dan,Sun, Zhaorigetu,Bao, Agula,Baiyin, Menghe,Muschin, Tegshi,Bao, Yong-Sheng
, p. 12664 - 12675 (2021/09/18)
The first [3 + 2 + 1] methodology for pyridine skeleton synthesis via cascade carbopalladation/cyclization of acetonitrile, arylboronic acids, and aldehydes was developed. This reaction proceeds via six step tandem reaction sequences involving the carbopalladation reaction of acetonitrile, a nucleophilic addition, a condensation, an intramolecular Michael addition, cyclization, and aromatization. Delightfully, both palladium acetate and supported palladium nanoparticles catalyzed this reaction with similar catalytic performance. The characterization results of the fresh and used supported palladium nanoparticle catalysts indicated that the reaction might be performed via a Pd(0)/Pd(II) catalytic cycle that began with Pd(0). Furthermore, the products showed good fluorescence characteristics. The green homogeneous/heterogenous catalytic methodologies pave a new way for constructing the pyridine skeleton.
Design and application of (Fe3O4)-GOTfOH based AgNPs doped starch/PEG-poly (acrylic acid) nanocomposite as the magnetic nanocatalyst and the wound dress
Forouzandehdel, Shayan,Meskini, Maryam,Rami, Mina Rezghi
, (2020/04/21)
As a novel, recyclable nanocatalyst, (Fe3O4)-GOTfOH based Ag nanoparticles doped Starch/PEG-poly (acrylic acid) nanocomposite (Fe3O4?GOTfOH/Ag/St-PEG-AcA) was applied for one-pot synthesis
