Thermal and photochemical decomposition of benzotriazoles (3) gives carbazoles (4) and (5), and cyclopentaquinolines (6), the formation of these products being rationalised by rearrangements in 4aH-carbazole intermediates (7); one proposed intermediate (11c) has been intercepted in an extended cycloaddition reaction with acrylonitrile.
苯并三唑的热和光
化学分解(3)得到
咔唑(4)和(5)和环戊
喹啉(6),通过在4a H-
咔唑中间体(7)中进行重排使这些产物的形成合理化;一种提议的
中间体(11c)在与
丙烯腈的延长的环加成反应中被截获。