期刊
POLYCYCLIC AROMATIC COMPOUNDS
卷 37, 期 4, 页码 314-326出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10406638.2015.1112821
关键词
Catalyst recovery; four-component reactions; green chemistry; heterogeneous catalysts; silica-supported ionic liquids; solvent-free
资金
- University of Sistan and Baluchestan Research Council
Three methods have been used for synthesis of pyrazolopyranopyrimidines, 3-methyl-4-aryl-4,5-dihydro-1H-pyrano[2,3-c]pyrazol-6-ones, and 1,6-diamino-2-oxo-1,2,3,4-tetrahydropyridine-3,5-dicarbonitrile derivatives via four-component reactions under solvent-free conditions. Silica-bonded 5-n-propyl-octahydro-pyrimido[1,2-a]azepiniumchloride (SB-DBU+Cl-), silica-bonded n-propyl-4-aza-1-azoniabicyclo[2.2.2]octane chloride (SB-DABCO(+)Cl(-)), and nano silica-bonded 5-n-propyl-octahydro-pyrimido[1,2-a]azepinium chloride (NSB-DBU+Cl-) as silica-supported ionic liquids catalyzed these reactions. These green, heterogeneous catalysts are separated from the reactions by simple filtration. The catalysts were recovered for at least four times without significant loss of their catalytic activities.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据