SnCl₄ grafted on silica gel: an efficient catalyst for solvent-free synthesis of coumarins via the Pechmann condensation

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• 作者：Rui Sun ; Yanjuan Gao ; Ying Ma ; Guangde Yang…
• 关键词：Stannic tetrachloride grafted on silica gel ; Coumarins ; Pechmann condensation ; Solvent ; free
• 刊名：Journal of the Iranian Chemical Society
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：14
• 期：3
• 页码：737-742
• 全文大小：
• 刊物主题：Analytical Chemistry; Inorganic Chemistry; Physical Chemistry; Biochemistry, general; Organic Chemistry;
• 出版者：Springer Berlin Heidelberg
• ISSN：1735-2428
• 卷排序：14

文摘

A facile synthesis of substituted coumarins via Pechmann condensation catalyzed by SnCl₄ grafted on silica gel is described, which was conducted under solvent-free condition in high yields. The catalyst is noncorrosive and can be easily prepared and separated from the reaction mixture. This methodology offers some advantages with regard to yield of products, simplicity in operation and green aspects.