fulltext.study @t Gmail

Magnetic inorganic–organic hybrid nanomaterial for the catalytic preparation of bis(indolyl)arylmethanes under solvent-free conditions: Preparation and characterization of H5PW10V2O40/pyridino-Fe3O4 nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
40239 45848 2013 13 PDF Available
Title
Magnetic inorganic–organic hybrid nanomaterial for the catalytic preparation of bis(indolyl)arylmethanes under solvent-free conditions: Preparation and characterization of H5PW10V2O40/pyridino-Fe3O4 nanoparticles
Abstract

•Preparation of a new magnetic inorganic–organic nanohybrid material.•Introducing a new and efficient protocol for the synthesis of substituted bis(indolyl)phenylmethanes.•Using a highly reusable nanocatalyst without significant loss of catalytic activity.•The heteropolyacid catalyst was covalently linked to the modified magnetite.

Magnetically separable inorganic–organic hybrid material H5PW10V2O40/pyridino-Fe3O4 (HPA/TPI-Fe3O4) nanoparticles provide an efficient and economic route for the synthesis of substituted bis(indolyl)methanes by the electrophilic substitution of indole with various aldehydes and ketones under solvent-free conditions with excellent yields in <30 min. This catalyst was prepared by the chemically anchoring H5PW10V2O40 onto Fe3O4 nanoparticles via the use of N-[3-(triethoxysilyl)propyl]isonicotinamide (TPI) linker. High catalytic activity and ease of recovery using an external magnetic field are additional eco-friendly attributes of this new catalytic system. The catalyst was recycled at least eight times without significant loss of catalytic activity. Characterization techniques such as XRD, SEM, and FTIR for HPA/TPI-Fe3O4 verified that the Keggin structure of tungsto-vanadophosphoric acid on the surface of pyridine modified Fe3O4 nanoparticles is retained.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (152 K)Download as PowerPoint slide

Keywords
Hybrid material; H5PW10V2O40; Fe3O4; Magnetic nanoparticles; Bis(indolyl)arylmethane
First Page Preview
Magnetic inorganic–organic hybrid nanomaterial for the catalytic preparation of bis(indolyl)arylmethanes under solvent-free conditions: Preparation and characterization of H5PW10V2O40/pyridino-Fe3O4 nanoparticles
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 468, 5 November 2013, Pages 75–87
Authors
, , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us