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Letters in Organic Chemistry

Editor-in-Chief

ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

Microwave Assisted Preparation of Flavylium Salts with Perchloric Acid Impregnated on Silica Gel Under Solvent-free Conditions

Author(s): Firouz Matloubi Moghaddam, Behzad Koushki Foroushani, Nima Ghonouei and Elaheh Lotfi Kalahroodi

Volume 11 , Issue 10 , 2014

Page: [713 - 718] Pages: 6

DOI: 10.2174/1570178611666140829220313

Price: $65

Abstract

Perchloric acid immobilized on silica gel (SiO2–HClO4) has been utilized as a mild and cheap reagent for onepot preparation of different varieties of flavylium salts via tandem reaction of different acetophenones with Salicylaldehydes under solvent-free conditions. Different reaction conditions such as conventional heating and microwave irradiation have been investigated. The corresponding flavylium salts have been prepared in high yields. The procedure is milder and more convenient than the known procedures.

Keywords: Flavylium salt, HClO4- SiO2, microwave irradiation, solvent-free conditions.

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