Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media

Abstract Combining the encapsulating capability of cyclodextrin and instinctive features of bentonite clay, a versatile metal free catalyst has been developed that could promote various chemical reactions such as Knoevenagel condensation, synthesis of xanthan and octahydroquinazolinones in aqueous m...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Fatemeh Koohestani, Samahe Sadjadi, Majid Heravi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7a0420fc59b44eec9a3b3d77e79ca0d7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7a0420fc59b44eec9a3b3d77e79ca0d7
record_format	dspace
spelling	oai:doaj.org-article:7a0420fc59b44eec9a3b3d77e79ca0d72021-12-02T13:34:51ZComposite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media10.1038/s41598-021-84349-92045-2322https://doaj.org/article/7a0420fc59b44eec9a3b3d77e79ca0d72021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84349-9https://doaj.org/toc/2045-2322Abstract Combining the encapsulating capability of cyclodextrin and instinctive features of bentonite clay, a versatile metal free catalyst has been developed that could promote various chemical reactions such as Knoevenagel condensation, synthesis of xanthan and octahydroquinazolinones in aqueous media under ultrasonic irradiation. To prepare the catalyst, bentonite was Cl-functionalized and then reacted with isatin and guanidine successively to furnish amino functionalized bentonite. The latter then reacted with tosylated cyclodextrin. The resultant catalytic composite was characterized via XRD, SEM, EDS, BET, elemental mapping analysis, TGA and FTIR. The catalytic activity tests approved excellent activity of the catalyst as well as broad substrate scope. Notably, the catalyst could be simply recovered and reused for several reaction runs. Moreover, the activity of the composite was superior to that of its components.Fatemeh KoohestaniSamahe SadjadiMajid HeraviNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fatemeh Koohestani Samahe Sadjadi Majid Heravi Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media
description	Abstract Combining the encapsulating capability of cyclodextrin and instinctive features of bentonite clay, a versatile metal free catalyst has been developed that could promote various chemical reactions such as Knoevenagel condensation, synthesis of xanthan and octahydroquinazolinones in aqueous media under ultrasonic irradiation. To prepare the catalyst, bentonite was Cl-functionalized and then reacted with isatin and guanidine successively to furnish amino functionalized bentonite. The latter then reacted with tosylated cyclodextrin. The resultant catalytic composite was characterized via XRD, SEM, EDS, BET, elemental mapping analysis, TGA and FTIR. The catalytic activity tests approved excellent activity of the catalyst as well as broad substrate scope. Notably, the catalyst could be simply recovered and reused for several reaction runs. Moreover, the activity of the composite was superior to that of its components.
format	article
author	Fatemeh Koohestani Samahe Sadjadi Majid Heravi
author_facet	Fatemeh Koohestani Samahe Sadjadi Majid Heravi
author_sort	Fatemeh Koohestani
title	Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media
title_short	Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media
title_full	Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media
title_fullStr	Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media
title_full_unstemmed	Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media
title_sort	composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7a0420fc59b44eec9a3b3d77e79ca0d7
work_keys_str_mv	AT fatemehkoohestani compositeofbentoniteandcyclodextrinasanefficientcatalystforpromotingchemicaltransformationsinaqueousmedia AT samahesadjadi compositeofbentoniteandcyclodextrinasanefficientcatalystforpromotingchemicaltransformationsinaqueousmedia AT majidheravi compositeofbentoniteandcyclodextrinasanefficientcatalystforpromotingchemicaltransformationsinaqueousmedia
_version_	1718392745721069568

Composite of bentonite and cyclodextrin as an efficient catalyst for promoting chemical transformations in aqueous media

Ejemplares similares