Homoselective Synthesis of tetrazoles and chemoselective oxidation of sulfides using Ni(II)-Schiff base complex stabilized on 3-dimensional mesoporous KIT-6 surface as a recyclable nanocatalyst

Inorganic Chemistry Communications, Journal Year: 2023, Volume and Issue: 160, P. 111852 - 111852

Published: Dec. 11, 2023

Language: Английский

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The new Schiff‐base complex of copper(II) grafted on mesoporous KIT‐6 as an effective nanostructure catalyst for the homoselective synthesis of various tetrazoles

Applied Organometallic Chemistry, Journal Year: 2023, Volume and Issue: 38(1)

Published: Nov. 30, 2023

In this work, KIT‐6 mesoporous silica material was used to create heterogeneous catalyst due its excellent surface area, substantial pore volume, and highly functionalized surface. A copper(II) Schiff‐base complex fabricated on the of KIT‐6. For purpose, (3‐iodopropyl)trimethoxysilane (IPTMS) synthesized as a linker from (3‐choloropropyl)trimethoxysilane through simple S N 2 reaction using NaI. On other hand, ligand (a) condensation diethylenetriamine (DETA) salicylaldehyde (SA), which identified by IR 1H‐NMR techniques. order to, prepare Sal(PMeOSi)DETA (b), reacted with IPTMS. One challenges synthesis prove linkage between IPTMS, proved technique. next step, Schiff base copper(Cu(II)[Sal(PMeOSi)DETA]) (c) complexation Cu(NO 3 ) .3 H O b. Finally, obtained copper fixed KIT‐6, {Cu(II)[Sal(PMeOSi)DETA]} new reusable practical catalyst. This has been IR, BET, EDS, XRD, SEM, TGA methods employed in different tetrazoles for first time. All were prepared high yields, good TOF TON values, indicating catalytic performance. shows homoselectivity five‐substituted 1H‐tetrazoles. Also, it can be recovered reused several times without significant decrease activity or leaching.

Language: Английский

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A new Schiff base 2-benzoylpyridine-based copper complex on boehmite nanoparticles as a recoverable nanocatalyst for the homoselective synthesis of 5-substituted tetrazoles

RSC Advances, Journal Year: 2024, Volume and Issue: 14(23), P. 16269 - 16277

Published: Jan. 1, 2024

In this research, the surface of boehmite NPs were modified and functionalized by 2-benzoylpyridine toward immobilization copper ions as a practical catalyst in synthesis tetrazoles.

Language: Английский

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3-(Sulfamic acid)-propyltriethoxysilane on biochar nanoparticles as a practical, biocompatible, recyclable and chemoselective nanocatalyst in organic reactions

RSC Advances, Journal Year: 2024, Volume and Issue: 14(31), P. 22147 - 22158

Published: Jan. 1, 2024

Biochar nanoparticles were functionalized by 3-(sulfamic acid)-propyltriethoxysilane (SAPES) as nanocatalyst in the synthesis of sulfoxides and tetrahydrobenzo[ b ]pyrans.

Language: Английский

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The bifunctional and reusable catalyst of cerium/L‐arginine on mesoporous KIT‐6 in the chemoselective oxidation of sulfides and homoselective synthesis of tetrahydrobenzo[b]pyrans

Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 38(9)

Published: July 29, 2024

In this work, KIT‐6@Schiff‐base@Ce nanocatalyst was synthesized by immobilizing the Ce complex on KIT‐6 mesoporous silica framework modified with 3‐iodopropyltrimethoxysilane group. The surface area, total volume, and average diameter of pores, physical properties, functional groups, organic content, element combination obtained were identified using different techniques including BET, FT‐IR, XRD, WDX, SEM, EDX. investigated as a novel stable reusable catalyst excellent performance for selective synthesizing sulfoxide tetrahydrobenzo[b]pyrans. designed successfully oxidized large number sulfides hydrogen peroxide under solvent‐free conditions or in ethanol safe, green, available solvent good efficiency within short reaction times. Also, catalyzed tetrahydrobenzo[b]pyrans multicomponent condensation dimedone, aldehydes, malononitrile water/ethanol (1:1) ideal, green solvent.

Language: Английский

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