Novel and Efficient Synthesis of Pyrazolo[3,4-b]pyridin-6-ones or Their Hydrogenated Derivatives through One-Pot Reaction in Ionic Liquid
作者:Xin-Ying Zhang、Xue-Sen Fan、Xiao-Yan Li、Xia Wang、Gui-Rong Qu、Jian-Ji Wang
DOI:10.3987/com-08-11561
日期:——
- Pyrazolo[3,4-b]pyridm-6-ones or their hydrogenated derivatives were obtained selectively and conveniently through one-pot reaction of aldehyde, ethyl cyanoacetate and 5-amino-3-methyl-l-phenylpyrazole in [bmim][BF 4 ] with or without ferric chloride at different temperatures. Advantages of this novel method include high yield, mild conditions, simple procedure and good selectivity. In addition, the