In(OTf)3 as a powerful and recyclable catalyst for Pechmann condensation without solvent

doi:10.1016/S1872-2067(14)60090-5

催化学报 ›› 2014, Vol. 35 ›› Issue (7): 1206-1211.DOI: 10.1016/S1872-2067(14)60090-5

In(OTf)₃ as a powerful and recyclable catalyst for Pechmann condensation without solvent

Bahador Karami, Mahtab Kiani, Mohsen Ahmad Hoseini

Department of Chemistry, Yasouj University, Yasouj 75918-74831, Iran

收稿日期:2013-12-15 修回日期:2014-03-21 出版日期:2014-06-28 发布日期:2014-06-28
通讯作者: Bahador Karami

In(OTf)₃ as a powerful and recyclable catalyst for Pechmann condensation without solvent

Bahador Karami, Mahtab Kiani, Mohsen Ahmad Hoseini

Department of Chemistry, Yasouj University, Yasouj 75918-74831, Iran

Received:2013-12-15 Revised:2014-03-21 Online:2014-06-28 Published:2014-06-28

摘要/Abstract

摘要：

In(OTf)₃ plays the role of a Lewis acid catalyst in the Pechmann condensation of phenols with β-ketoesters under solvent-free conditions to give coumarin derivatives. This novel and inexpensive method has advantages such as short reaction time, excellent product yields, and avoids the use of organic solvents in agreement with green chemistry principles. Catalyst loadings can be as low as 1 mol% to give high yields of the corresponding coumarins at 80℃. The catalyst can be recovered after the reaction, and reused with only a slight decrease in the yield.

关键词: In(OTf)₃, Lewis acid catalyst, Pechmann condensation, Coumarin, Solvent-free condition

Abstract:

Key words: In(OTf)₃, Lewis acid catalyst, Pechmann condensation, Coumarin, Solvent-free condition

Bahador Karami, Mahtab Kiani, Mohsen Ahmad Hoseini. In(OTf)₃ as a powerful and recyclable catalyst for Pechmann condensation without solvent[J]. 催化学报, 2014, 35(7): 1206-1211.

Bahador Karami, Mahtab Kiani, Mohsen Ahmad Hoseini. In(OTf)₃ as a powerful and recyclable catalyst for Pechmann condensation without solvent[J]. Chinese Journal of Catalysis, 2014, 35(7): 1206-1211.

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In(OTf)₃ as a powerful and recyclable catalyst for Pechmann condensation without solvent

In(OTf)₃ as a powerful and recyclable catalyst for Pechmann condensation without solvent

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