A Convenient Synthesis of Quinolines via Ionic Liquid-Catalysed Friedlander Annulation

Tao      Zhou; Jian-Li      Lin; Zhen-Chu      Chen

doi:10.2174/157017808783330261

Abstract

A convenient and green protocol for the synthesis of quinolines by Friedlander annulation using an acidic ionic liquid, ethylammonium nitrate, as both a catalyst and a reaction medium is reported. The reactions were performed at 45°C with moderate to excellent yields. The recovered ionic liquid could be reused for several cycles without any loss of activity.

Keywords: Ionic liquid, Friedlander reaction, quinoline

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Letters in Organic Chemistry

Title: A Convenient Synthesis of Quinolines via Ionic Liquid-Catalysed Friedlander Annulation

Volume: 5 Issue: 1

Author(s): Tao Zhou, Jian-Li Lin and Zhen-Chu Chen

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Keywords: Ionic liquid, Friedlander reaction, quinoline

Abstract: A convenient and green protocol for the synthesis of quinolines by Friedlander annulation using an acidic ionic liquid, ethylammonium nitrate, as both a catalyst and a reaction medium is reported. The reactions were performed at 45°C with moderate to excellent yields. The recovered ionic liquid could be reused for several cycles without any loss of activity.

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Zhou Tao, Lin Jian-Li and Chen Zhen-Chu, A Convenient Synthesis of Quinolines via Ionic Liquid-Catalysed Friedlander Annulation, Letters in Organic Chemistry 2008; 5 (1) . https://dx.doi.org/10.2174/157017808783330261