Hydrazones derived from thiooxamohydrazides and 3-formyl-4-hydroxycoumarin: synthesis, structures, and fragmentation
作者:B. G. Milevsky、N. P. Solov’eva、T. A. Chibisova、V. N. Yarovenko、E. S. Zayakin、V. V. Chernyshev、M. M. Krayushkin、V. F. Traven
DOI:10.1007/s11172-012-0325-x
日期:2012.12
Novel hydrazones were obtained from thiooxamohydrazides and 3-3-formyl-4-hydroxycoumarin. According to data from NMR spectroscopy and X-ray diffraction, the coumarin fragment in the compounds obtained exists as 4-hydroxycoumarin or chromane-2,4-dione. When dissolved in dimethyl sulfoxide, these hydrazones undergo fragmentation into derivatives of 1,3,4-thiadiazole and 4-hydroxycoumarin.
从 thiooxamohydrazides 和 3-3-formyl-4-hydroxycoumarin 中获得了新型腙。根据核磁共振谱和X射线衍射数据,所得化合物中的香豆素片段以4-羟基香豆素或色烷-2,4-二酮形式存在。当溶解在二甲亚砜中时,这些腙会分裂成 1,3,4-噻二唑和 4-羟基香豆素的衍生物。