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TiO2–SO42− as a novel solid acid catalyst for highly efficient, solvent free and easy synthesis of chalcones under microwave irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
50525 46800 2011 5 PDF Available
Title
TiO2–SO42− as a novel solid acid catalyst for highly efficient, solvent free and easy synthesis of chalcones under microwave irradiation
Abstract

TiO2–SO42− has been prepared by the sol–gel method using H2SO4 and used for the synthesis of chalcones under microwave irradiation. Sulfate loading by H2SO4 increases the Lewis acidity of TiO2. This catalyst gives an excellent yield with less reaction time and is an inexpensive, easily recyclable catalyst for this reaction.

Graphical AbstractSulfate loading by H2SO4 increases the Lewis acidity of TiO2. This catalyst gives excellent yield with less reaction time and it is an inexpensive, easily recyclable catalyst for the synthesis of chalcones under microwave irradiation.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Chalcones possess a broad spectrum of biological activity. ► This letter reports a new solid acid semiconductor catalyst for chalcone synthesis. ► The use of microwaves in organic synthesis has attracted considerable attention in recent years. ► TiO2 possesses a unique type of surface involving both redox and acid–base sites. ► Sulfated titania has more acidic sites and so more efficient than bare TiO2. ► Easy product isolation and catalyst reusability make this reaction eco-friendly.

Keywords
Sulfated titania; Lewis acidity; Chalcones; Solid acid catalyst; Microwave irradiation
First Page Preview
TiO2–SO42− as a novel solid acid catalyst for highly efficient, solvent free and easy synthesis of chalcones under microwave irradiation
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 5, 5 January 2011, Pages 375–379
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis