A Green Method for the Synthesis of 3-Substituted Coumarins Catalyzed by L-Lysine in Water Via Knoevenagel Condensation

Xinwen      You; Hua      Yu; Mangang      Wang; Jun      Wu; Zhicai      Shang

doi:10.2174/157017812799303953

Abstract

L-lysine was applied to the synthesis of 3-substituted coumarins through the condensation of various salicylaldehyde with reactive methylene compounds in water. In this work, waste minimization, catalyst recovery, simple operation and easier product work-up were achieved.

Keywords: Coumarins, green chemistry, knoevenagel condensation, L-lysine, water, optical brightening agents, fluorescent, laser dyes, ethyl acetoacetate, microwave irradiation

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Letters in Organic Chemistry

Title: A Green Method for the Synthesis of 3-Substituted Coumarins Catalyzed by L-Lysine in Water Via Knoevenagel Condensation

Volume: 9 Issue: 1

Author(s): Xinwen You, Hua Yu, Mangang Wang, Jun Wu and Zhicai Shang

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Keywords: Coumarins, green chemistry, knoevenagel condensation, L-lysine, water, optical brightening agents, fluorescent, laser dyes, ethyl acetoacetate, microwave irradiation

Abstract: L-lysine was applied to the synthesis of 3-substituted coumarins through the condensation of various salicylaldehyde with reactive methylene compounds in water. In this work, waste minimization, catalyst recovery, simple operation and easier product work-up were achieved.

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You Xinwen, Yu Hua, Wang Mangang, Wu Jun and Shang Zhicai, A Green Method for the Synthesis of 3-Substituted Coumarins Catalyzed by L-Lysine in Water Via Knoevenagel Condensation, Letters in Organic Chemistry 2012; 9 (1) . https://dx.doi.org/10.2174/157017812799303953