Three‐Component, One‐Pot Synthesis of Pyrazolo[3,4‐<i>b</i>]pyridine Derivatives in Aqueous Media
作者:Da‐Qing Shi、Hao Yao、Jing‐Wen Shi
DOI:10.1080/00397910801929804
日期:2008.4.1
6-Amino-4-aryl-5-cyanopyrazolo[3,4-b]pyridines were synthesized by a three-component reaction of aromatic aldehydes, malononitrile, and 5-amino-3methyl-1-phenylpyrazole using sodium 1-dodecanesulfonic (SDS) as catalyst in aqueous media. The reaction has the advantages of good yields, less pollution, ease of separation, and environmental friendliness.