An Efficient Solvent-Free Synthesis of 2-Hydroxy-2-(trifluoromethyl)-2H-chromenes Using Silica-Immobilized L-Proline

An efficient synthesis of 2-hydroxy-2-(trifluoromethyl)-2H-chromene-3-carboxylates was carried out under solvent-free conditions in an oven or microwave oven via the Knoevenagel condensation of salicylaldehydes with ethyl trifluoroacetoacetate followed by intramolecular cyclization in the presence o...

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Bibliographic Details
Main Authors: Ya Gao, Lixia Xie, Sufang Fan, Guoyu Yang, Caixia Wang, Cuilian Xu
Format: Article
Language:English
Published: MDPI AG 2013-09-01
Series:Molecules
Subjects:
Online Access:http://www.mdpi.com/1420-3049/18/10/11964