Synthesis p. 45 - 52 (2013)
Update date:2022-08-03
Topics:
Ma, Lichao
Yuan, Liwei
Xu, Changzhu
Li, Guowei
Tao, Minli
Zhang, Wenqin
A new N-methylpiperazine-functionalized polyacrylonitrile fiber has been developed to catalyze the Gewald reaction between 2,5-dihydroxy-1,4-dithiane and activated nitriles to afford 3-substituted 2-aminothiophenes in good to excellent yields (65-91%). Low catalyst loading (8.0 mol%), simple procedure, high yields, excellent recyclability, and reusability (up to 10 times with minimal loss of catalytic activity) are attractive features of this fiber catalyst. Georg Thieme Verlag Stuttgart · New York.
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