The reaction of benzyl, methyl and phenyl azide, with olefins substituted by three electron-withdrawing groups, has been studied. This reaction gives in certain cases only one triazoline (single orientation of the cycloaddition). In other cases, a mixture of a triazoline and a diazocompound (double orientation of the cycloaddition) is obtained. The structure assignment of the triazolines is confirmed
研究了苄基,甲基和苯基
叠氮化物与被三个吸电子基团取代的烯烃的反应。在某些情况下,该反应仅产生一个三唑啉(环加成的单取向)。在其他情况下,获得三唑啉和重氮化合物的混合物(环加成的双重取向)。使用
化学方法和13 C-NMR证实了三唑啉的结构分配。在热方面,重氮化合物重排成烯酸酯,后者在高温下环化成
喹啉。