作者:Leo R. Swett、James D. Ratajczyk、Carl W. Nordeen、George H. Aynilian
DOI:10.1002/jhet.5570120611
日期:1975.12
hydrolysis, and by comparison of the spectral data of a series of analogous pyrazolothiazepines. Treating the pyrazolothiazepines with sodium hydride and methyl iodide in dimethylformamide or dimethylsulfoxide resulted in a ring contraction with the elimination of sulfur, to yield the pyrazolopyridones in addition to the N-methylpyrazolothiazepines.
通过使5-氨基-1,3-二甲基吡唑与芳醛或酮和巯基乙酸反应,可得到吡唑并[3,4- e ] [1,4]噻氮平衍生物。这些衍生物的结构证明是通过鉴定脱硫和随后水解获得的苄基吡唑产物,并通过比较一系列类似的吡唑并噻嗪品的光谱数据来进行的。在二甲基甲酰胺或二甲基亚砜中用氢化钠和甲基碘处理吡唑并噻庚因导致环收缩并消除了硫,除了N-甲基吡唑并噻氮杂之外,还产生了吡唑并吡啶酮。