Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives

Abstract In this study, a novel mesoporous nanocomposite was fabricated in several steps. In this regard, SBA-15 was prepared by the hydrothermal method, next it was magnetized by in-situ preparation of Fe3O4 MNPs. After that, the as-prepared SBA-15/Fe3O4 functionalized with 3-minopropyltriethoxysil...

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Autores principales:	Fereshte Hassanzadeh-Afruzi, Somayeh Asgharnasl, Sara Mehraeen, Zeinab Amiri-Khamakani, Ali Maleki
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5065c2f3138b4e8eafc548ed46528263
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spelling	oai:doaj.org-article:5065c2f3138b4e8eafc548ed465282632021-12-02T19:16:19ZGuanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives10.1038/s41598-021-99120-32045-2322https://doaj.org/article/5065c2f3138b4e8eafc548ed465282632021-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99120-3https://doaj.org/toc/2045-2322Abstract In this study, a novel mesoporous nanocomposite was fabricated in several steps. In this regard, SBA-15 was prepared by the hydrothermal method, next it was magnetized by in-situ preparation of Fe3O4 MNPs. After that, the as-prepared SBA-15/Fe3O4 functionalized with 3-minopropyltriethoxysilane (APTES) via post-synthesis approach. Then, the guanidinylated SBA-15/Fe3O4 was obtained by nucleophilic addition of APTES@SBA-15/Fe3O4 to cyanimide. The prepared nanocomposite exhibited excellent catalytic activity in the synthesis of dihydropyrano[2,3-c]pyrazole derivatives which can be related to its physicochemical features such as strong basic sites (presented in guanidine group), Lewis acid site (presented in Fe3O4), high porous structure, and high surface area. The characterization of the prepared mesoporous nanocomposite was well accomplished by different techniques such as FT-IR, EDX, FESEM, TEM, VSM, TGA, XRD and BET. Furthermore, the magnetic catalyst was reused at least six consequent runs without considerable reduction in its catalytic activity.Fereshte Hassanzadeh-AfruziSomayeh AsgharnaslSara MehraeenZeinab Amiri-KhamakaniAli MalekiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fereshte Hassanzadeh-Afruzi Somayeh Asgharnasl Sara Mehraeen Zeinab Amiri-Khamakani Ali Maleki Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
description	Abstract In this study, a novel mesoporous nanocomposite was fabricated in several steps. In this regard, SBA-15 was prepared by the hydrothermal method, next it was magnetized by in-situ preparation of Fe3O4 MNPs. After that, the as-prepared SBA-15/Fe3O4 functionalized with 3-minopropyltriethoxysilane (APTES) via post-synthesis approach. Then, the guanidinylated SBA-15/Fe3O4 was obtained by nucleophilic addition of APTES@SBA-15/Fe3O4 to cyanimide. The prepared nanocomposite exhibited excellent catalytic activity in the synthesis of dihydropyrano[2,3-c]pyrazole derivatives which can be related to its physicochemical features such as strong basic sites (presented in guanidine group), Lewis acid site (presented in Fe3O4), high porous structure, and high surface area. The characterization of the prepared mesoporous nanocomposite was well accomplished by different techniques such as FT-IR, EDX, FESEM, TEM, VSM, TGA, XRD and BET. Furthermore, the magnetic catalyst was reused at least six consequent runs without considerable reduction in its catalytic activity.
format	article
author	Fereshte Hassanzadeh-Afruzi Somayeh Asgharnasl Sara Mehraeen Zeinab Amiri-Khamakani Ali Maleki
author_facet	Fereshte Hassanzadeh-Afruzi Somayeh Asgharnasl Sara Mehraeen Zeinab Amiri-Khamakani Ali Maleki
author_sort	Fereshte Hassanzadeh-Afruzi
title	Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
title_short	Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
title_full	Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
title_fullStr	Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
title_full_unstemmed	Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
title_sort	guanidinylated sba-15/fe3o4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5065c2f3138b4e8eafc548ed46528263
work_keys_str_mv	AT fereshtehassanzadehafruzi guanidinylatedsba15fe3o4mesoporousnanocompositeasanefficientcatalystforthesynthesisofpyranopyrazolederivatives AT somayehasgharnasl guanidinylatedsba15fe3o4mesoporousnanocompositeasanefficientcatalystforthesynthesisofpyranopyrazolederivatives AT saramehraeen guanidinylatedsba15fe3o4mesoporousnanocompositeasanefficientcatalystforthesynthesisofpyranopyrazolederivatives AT zeinabamirikhamakani guanidinylatedsba15fe3o4mesoporousnanocompositeasanefficientcatalystforthesynthesisofpyranopyrazolederivatives AT alimaleki guanidinylatedsba15fe3o4mesoporousnanocompositeasanefficientcatalystforthesynthesisofpyranopyrazolederivatives
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Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives

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