A simple and efficient preparation of pyrazolo[3,4-<i>b</i>]-pyridine derivatives through an unexpected reaction of cyanothioacetamide under microwave irradiation
作者:Xuesen Fan、Xia Wang、Xinying Zhang、Xiaoyan Li、Guirong Qu
DOI:10.1002/hc.20497
日期:2008.11
An unexpected multicomponent reaction of cyanothioacetamide with aromatic aldehydes and aminopyrazole under MWI was found and reported. It turned out to be an efficient and simple procedure for the preparation of pyrazolo[3,4-b]pyridine derivatives. The structure of the product was characterized by IR, MS, 1H and 13C NMR, COSY and NOESY spectroscopy, X-ray crystallographic analysis, and by comparison
发现并报道了氰硫代乙酰胺与芳香醛和氨基吡唑在 MWI 下的意外多组分反应。结果证明这是制备吡唑并[3,4-b]吡啶衍生物的一种有效且简单的方法。产物的结构通过IR、MS、1H和13C NMR、COZY和NOESY光谱、X-射线晶体学分析以及与用已知方法制备的真实样品进行比较来表征。© 2008 Wiley Periodicals, Inc. 杂原子化学 19:694–699, 2008; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20497