Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocomposite
Co3O4/NiO@GQDs@SO3H nanocatalyst has been used as an effective catalyst for the preparation of dihydropyrano[3,2-c]chromenes and biscoumarins under ultrasonic irradiations in ethanol. The catalyst has been characterized by FT-IR, XRD, SEM, EDS, BET, TGA, XPS and VSM. Atom economy, reusable catalyst,...
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Online Access: | http://dx.doi.org/10.1080/20550324.2020.1776492 |
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doaj-9d149fb0f5c2472085c90af54ba2fba32020-11-25T03:57:06ZengTaylor & Francis GroupNanocomposites2055-03322020-04-0162566510.1080/20550324.2020.17764921776492Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocompositeHossein Shahbazi-Alavi0Ali Kareem Abbas1Javad Safaei-Ghomi2Islamic Azad UniversityUniversity of KerbalaUniversity of KashanCo3O4/NiO@GQDs@SO3H nanocatalyst has been used as an effective catalyst for the preparation of dihydropyrano[3,2-c]chromenes and biscoumarins under ultrasonic irradiations in ethanol. The catalyst has been characterized by FT-IR, XRD, SEM, EDS, BET, TGA, XPS and VSM. Atom economy, reusable catalyst, low catalyst loading, applicability to a wide range of substrates, high yields of products, and applying the sonochemical methodology as an efficient method and innocuous means of activation in synthetic chemistry for the preparation of medicinally privileged heterocyclic molecules are some of the substantial features of this method. The present catalytic procedure is extensible to a wide diversity of substrates for the synthesis of a variety-oriented library of pyranochromene and biscoumarins. The ultrasound approach decreases times, increases yields of products by creating the activation energy in micro surroundings. Meanwhile, this recoverable catalyst will provide a regular platform for heterogeneous catalysis, green chemistry, and environmentally benign protocols in the near future.http://dx.doi.org/10.1080/20550324.2020.1776492nanocompositeone-potultrasonicchromenebiscoumarinsnanoanalysis |
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 Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocomposite Nanocomposites nanocomposite one-pot ultrasonic chromene biscoumarins nanoanalysis |
author_facet |
Hossein Shahbazi-Alavi Ali Kareem Abbas Javad Safaei-Ghomi |
author_sort |
Hossein Shahbazi-Alavi |
title |
Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocomposite |
title_short |
Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocomposite |
title_full |
Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocomposite |
title_fullStr |
Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocomposite |
title_full_unstemmed |
Sonosynthesis of pyranochromenes and biscoumarins catalyzed by Co3O4/NiO@GQDs@SO3H nanocomposite |
title_sort |
sonosynthesis of pyranochromenes and biscoumarins catalyzed by co3o4/nio@gqds@so3h nanocomposite |
publisher |
Taylor & Francis Group |
series |
Nanocomposites |
issn |
2055-0332 |
publishDate |
2020-04-01 |
description |
Co3O4/NiO@GQDs@SO3H nanocatalyst has been used as an effective catalyst for the preparation of dihydropyrano[3,2-c]chromenes and biscoumarins under ultrasonic irradiations in ethanol. The catalyst has been characterized by FT-IR, XRD, SEM, EDS, BET, TGA, XPS and VSM. Atom economy, reusable catalyst, low catalyst loading, applicability to a wide range of substrates, high yields of products, and applying the sonochemical methodology as an efficient method and innocuous means of activation in synthetic chemistry for the preparation of medicinally privileged heterocyclic molecules are some of the substantial features of this method. The present catalytic procedure is extensible to a wide diversity of substrates for the synthesis of a variety-oriented library of pyranochromene and biscoumarins. The ultrasound approach decreases times, increases yields of products by creating the activation energy in micro surroundings. Meanwhile, this recoverable catalyst will provide a regular platform for heterogeneous catalysis, green chemistry, and environmentally benign protocols in the near future. |
topic |
nanocomposite one-pot ultrasonic chromene biscoumarins nanoanalysis |
url |
http://dx.doi.org/10.1080/20550324.2020.1776492 |
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