Issue 21, 2021, Issue in Progress
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RSC Advances

An asymmetric Salamo-based Zn complex supported on Fe3O4 MNPs: a novel heterogeneous nanocatalyst for the silyl protection and deprotection of alcohols under mild conditions

Hongyan Yao,a   Yongsheng Wang ORCID logo *b  and  Maryam Kargar Razi*c  

* Corresponding authors

a Dean's Office, Hebi Polytechnic, Hebi 458030, China

b School of Physical Science Education, Henan Polytechnic University, Jiaozuo 454003, China
E-mail: yongshengw02@gmail.com, 454897487@qq.com, wys@hpu.edu.cn

c Faculty of Chemistry, North Branch of Tehran, Islamic Azad University, Tehran, Iran
E-mail: m_kargarrazi@iau-tnb.ac.ir

Abstract

In this study, a magnetic asymmetric Salamo-based Zn complex (H2L = salen type di-Schiff bases)-supported on the surface of modified Fe3O4 (Fe3O4@H2L-Zn) as a new catalyst was designed and characterized via numerous analytical techniques such as FT-IR spectroscopy, XRD, EDS, ICP-AES, SEM, TEM, TGA and VSM. An efficient and sustainable synthetic protocol has been presented for the synthesis of silyl ether substructures via the silyl protection of alcohols under mild conditions. The synthetic protocol involves a two-component solvent-free reaction between various hydroxyl-bearing substrates and hexamethyldisilazane (HMDS) as an inexpensive silylating agent using Fe3O4@H2L-Zn MNPs as a magnetically separable, recyclable and reusable heterogeneous catalyst. Fe3O4@H2L-Zn MNPs were also applied for the removal of silyl protecting groups from hydroxyl functions using water in CH2Cl2 under green conditions. The catalyst demonstrated good to excellent catalytic yield efficiency for both the reactions compared to the commercial metal-based catalysts under green conditions for a wide range of substrates.

Graphical abstract: An asymmetric Salamo-based Zn complex supported on Fe3O4 MNPs: a novel heterogeneous nanocatalyst for the silyl protection and deprotection of alcohols under mild conditions

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Article information

DOI
https://doi.org/10.1039/D1RA01185E
Article type
Paper
Submitted
12 Feb 2021
Accepted
12 Mar 2021
First published
31 Mar 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 12614-12625

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An asymmetric Salamo-based Zn complex supported on Fe3O4 MNPs: a novel heterogeneous nanocatalyst for the silyl protection and deprotection of alcohols under mild conditions

H. Yao, Y. Wang and M. K. Razi, RSC Adv., 2021, 11, 12614 DOI: 10.1039/D1RA01185E

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