1498-82-4Relevant articles and documents
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
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.].
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.
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.
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.
