The bromination of aldehydo-sugars p-nitrophenylhydrazones has been studied and the gem-bromo-azo intermediates isolated and characterized in some cases. In the same way, in the chlorination of aldehydo-sugars oximes gem-chloro-nitroso intermediates have been obtained and in some instances isolated. These observations support a SE2′ mechanism for such reactions.
对醛糖对
硝基苯hydr的
溴化进行了研究,并在某些情况下分离了宝石-
溴-偶氮中间体并进行了表征。以相同的方式,在醛-糖
肟的
氯化中,获得了宝石-
氯-亚硝基中间体,并且在某些情况下将其分离。这些观察结果支持了这种反应的S E 2'机制。