Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridines

Co3O4/NiO@GQDs@SO3H nanocatalyst has been used as an effective catalyst for the preparation of benzopyranopyridines through a four-component reaction of salicylaldehydes, thiols and 2 equiv of malononitrile under reflux condition in ethanol. The catalyst has been characterized by FT-IR, XRD, SEM, ED...

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Main Authors: Hossein Shahbazi-Alavi, Ali Kareem Abbas, Javad Safaei-Ghomi
Format: Article
Language:English
Published: Iranian Chemical Society 2019-10-01
Series:Nanochemistry Research
Subjects:
Online Access:http://www.nanochemres.org/article_104935_2c3f980cb67e3c3684a7227ff4466897.pdf
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spelling doaj-793e66477bfe48139332478fd99a9c7b2021-02-17T13:28:59ZengIranian Chemical SocietyNanochemistry Research2538-42792423-818X2019-10-014215416210.22036/ncr.2019.02.007104935Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridinesHossein Shahbazi-Alavi0Ali Kareem Abbas1Javad Safaei-Ghomi2Young Researchers and Elite Club, Kashan Branch, Islamic Azad University, Kashan, IranCollege of applied medical sciences, University of kerbala, IraqDepartment of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, IranCo3O4/NiO@GQDs@SO3H nanocatalyst has been used as an effective catalyst for the preparation of benzopyranopyridines through a four-component reaction of salicylaldehydes, thiols and 2 equiv of malononitrile under reflux condition in ethanol. The catalyst has been characterized by FT-IR, XRD, SEM, EDS, BET, XPS, TGA and VSM. Atom economy, reusable catalyst, low catalyst loading, applicability to a wide range of substrates and high yields of products are some of the notable features of this method. The best results were gained in EtOH and we found that the reaction gave convincing results in the presence of Co3O4/NiO@GQDs@SO3H nanocomposite (4 mg) under reflux conditions. A series of salicylaldehydes and different thiols were studied under optimum conditions.We also determined recycling of Co3O4/NiO@GQDs@SO3H nanocomposite as catalyst for the model reaction under reflux conditions in ethanol. The results showed that nanocomposite can be reused several times without noticeable loss of catalytic activity (Yields 90 to 88%)http://www.nanochemres.org/article_104935_2c3f980cb67e3c3684a7227ff4466897.pdfnanocompositeone-potheterogeneous catalystspyranopyridinesnanoanalysis
collection DOAJ
language English
format Article
sources DOAJ
author Hossein Shahbazi-Alavi
Ali Kareem Abbas
Javad Safaei-Ghomi
spellingShingle Hossein Shahbazi-Alavi
Ali Kareem Abbas
Javad Safaei-Ghomi
Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridines
Nanochemistry Research
nanocomposite
one-pot
heterogeneous catalysts
pyranopyridines
nanoanalysis
author_facet Hossein Shahbazi-Alavi
Ali Kareem Abbas
Javad Safaei-Ghomi
author_sort Hossein Shahbazi-Alavi
title Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridines
title_short Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridines
title_full Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridines
title_fullStr Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridines
title_full_unstemmed Co3O4/NiO@GQDs@SO3H nanocomposite as an effective catalyst for the synthesis of pyranopyridines
title_sort co3o4/nio@gqds@so3h nanocomposite as an effective catalyst for the synthesis of pyranopyridines
publisher Iranian Chemical Society
series Nanochemistry Research
issn 2538-4279
2423-818X
publishDate 2019-10-01
description Co3O4/NiO@GQDs@SO3H nanocatalyst has been used as an effective catalyst for the preparation of benzopyranopyridines through a four-component reaction of salicylaldehydes, thiols and 2 equiv of malononitrile under reflux condition in ethanol. The catalyst has been characterized by FT-IR, XRD, SEM, EDS, BET, XPS, TGA and VSM. Atom economy, reusable catalyst, low catalyst loading, applicability to a wide range of substrates and high yields of products are some of the notable features of this method. The best results were gained in EtOH and we found that the reaction gave convincing results in the presence of Co3O4/NiO@GQDs@SO3H nanocomposite (4 mg) under reflux conditions. A series of salicylaldehydes and different thiols were studied under optimum conditions.We also determined recycling of Co3O4/NiO@GQDs@SO3H nanocomposite as catalyst for the model reaction under reflux conditions in ethanol. The results showed that nanocomposite can be reused several times without noticeable loss of catalytic activity (Yields 90 to 88%)
topic nanocomposite
one-pot
heterogeneous catalysts
pyranopyridines
nanoanalysis
url http://www.nanochemres.org/article_104935_2c3f980cb67e3c3684a7227ff4466897.pdf
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