spectroscopy as well as by quantum-chemical calculations. 2-Phenacyl-1H-benzimidazoles in DMSO-d6 solution were found to display predominantly imino-enamino tautomerism, while their salts were found to display predominantly keto-enol tautomerism.
通过使用芳酰
氯对
2-甲基苯并咪唑进行酰化反应,然后醇解或对得到的N,C,O-三酰化产物进行
氨解反应,可以制备2-Phenacyl-1 H -benzimidazoles。用
氢溴酸处理2-苯甲酰基-1 H-
苯并咪唑,得到相应的盐。产物的结构得到IR,1 H和13 C NMR,HMBC光谱以及量子
化学计算的支持。发现在
DMSO-d 6溶液中的2-苯甲酰基-1 H-
苯并咪唑主要显示亚
氨基-烯
氨基互变异构,而发现它们的盐则主要显示酮-烯醇互变异构。