期刊
SYNTHETIC COMMUNICATIONS
卷 43, 期 13, 页码 1859-1864出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00397911.2012.674607
关键词
2-Aminothiophenes; Gewald reaction; heterogeneous catalysis; multicomponent reaction
Piperazine supported on amorphous silica (KG-60-piperazine) as a basic catalyst acts in the Gewald three-component reaction of some aldehydes and ketones with malononitrile as well as ethyl cyanoacetate. The catalyst shows general utility with a variety of starting carbonyl compounds. Moreover, the catalyst can be reused for four additional cycles without significant loss of the activity. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
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