期刊
COMPTES RENDUS CHIMIE
卷 17, 期 12, 页码 1155-1159出版社
ACAD SCIENCES
DOI: 10.1016/j.crci.2014.04.001
关键词
Coumarins; beta-keto esters; Recyclable catalyst; Solvent-free conditions
Nanocrystalline titania-based sulfonic acid was used as an efficient and reusable catalyst for the synthesis of coumarins. The clean, mild acidity condition, the quantitative yields of products, the short reaction time, and the low reaction temperature are attractive features of this method, making it suitable for heat- or acid-sensitive substrates, particularly in drug synthesis. In practice, this method affords an advantageous combination of satisfactory yields, easy product isolation and purification. (C) 2014 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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