The crotononitriles 1a–c coupled with arenediazonium salts to yield either the acyclic mono- or dihydrazones depending on coupling reaction conditions. Both mono- and dihydrazones could be cyclized to the corresponding pyridazine derivatives. Direct formation of pyridazines on coupling 1b and 1c with arenediazonium salts was observed. Structures of reaction products are confirmed by spectral and analytical
根据偶联反应条件,
巴豆腈 1a-c 与
芳烃重氮盐偶联产生无环单腙或二腙。单腙和二腙均可环化为相应的
哒嗪衍
生物。观察到在与
芳烃重氮盐偶联时直接形成
哒嗪类化合物 1b 和 1c。反应产物的结构由光谱和分析数据证实。