Pyrazolo[3,4-<i>e</i>] [1,4] thiazepines: Synthesis and structure proof
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 ringcontraction with the elimination of sulfur, to yield the pyrazolopyridones in addition to the N-methylpyrazolothiazepines.