A convenient and easy approach to the 4,5′-diisoxazole ring system, based on the cycloaddition of benzonitrile oxide to butadienylamines is deicribed. Both mono- and bis-adducts are obtained, whose structures have been confirmed by spectral analysis and chemical transformations. Addition on the base substituted double bond occurs with inversion of the orientation with regard to butadiene.
对基于
苯甲腈氧化物与
丁二烯基胺的环加成的4,5'-二
异恶唑环系的简便方法进行了描述。获得了单加合物和双加合物,其结构已通过光谱分析和
化学转化得到证实。相对于
丁二烯的取向反转,在碱取代的双键上发生加成。