A very simple solvent-free method for the synthesis of 2-arylchromones using KHSO₄ as a recyclable catalyst

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• 作者：Marí ; a Pé ; rez^a ; Diego Ruiz^a ; Juan Autino^a ; Angel Sathicq^b ; Gustavo Romanelli^a ; ^b ; ^{gpr@quimica.unlp.edu.ar" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Flavones ; Chromones ; KHSO4 ; Solvent-free reaction ; Catalytic procedure
• 刊名：Comptes Rendus Chimie
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：19
• 期：5
• 页码：551-555
• 全文大小：458 K

文摘

An efficient and solvent-free procedure for the synthesis of flavones using KHSO₄ as a recyclable catalyst is described. The methodology represents an environmentally friendly process in comprehensive consideration compared with other catalytic systems listed in publications. This method provides a clean, simple, solvent-free reaction and useful alternatives to prepare flavones and chromones. The use of KHSO₄ catalyst provides excellent yields, also leading to an easy separation and recovery of the catalysts, which allows both low environmental impact and low cost. Other green advantages of the method are the low formation of wastes and the replacement of corrosive, soluble mineral acids.