作者:Ahmad S. Shawali、Mohammed I. Ali、Abdelgawad A. Fahmi
DOI:10.1246/bcsj.46.1798
日期:1973.6
Benzoylacetanilide and fourteen of its substituted derivatives were brominated to give α-bromobenzoylacetanilides (I). The spectral data of I indicate that they exist mainly in the keto form. Reaction of I with phenylhydrazine yielded 4-phenylazo-1,3-diaryl-2-pyrazolin-5-ones (IV). Treatment of I with thiourea and thioacetamide gave 2-amino-4-arylthiazole-5-carboxanilides (XII) and 2-methyl-4-arylthiazole-5-carboxanilides (XIII), respectively. With excess of concentrated sulfuric acid or polyphosphoric acid, α-bromobenzoylacetanilides (I) were converted into 3-bromo-4-aryl-2-quinolones (XVI). Structural assignments were based on the elemental and spectral analyses.
苯甲酰乙酰苯胺及其14种取代衍生物被溴化,得到α-溴苯甲酰乙酰苯胺(I)。I的光谱数据表明它们主要以酮的形式存在。I与苯肼反应生成4-苯基偶氮-1,3-二芳基-2-吡唑啉-5-酮(IV)。I与硫脲和硫代乙酰胺反应分别生成2-氨基-4-芳基噻唑-5-甲酰苯胺(XII)和2-甲基-4-芳基噻唑-5-甲酰苯胺(XIII)。在过量的浓硫酸或多磷酸作用下,α-溴苯甲酰乙酰苯胺(I)转化为3-溴-4-芳基-2-喹啉酮(XVI)。结构分配基于元素和光谱分析。