The products of flash vacuum pyrolysis of N-acetyl, N-methyl, N-benzyl and N-heteroaryl-substituted benzotriazole, 2,1-benzoxazol-3-one and 2,1-benzothiazol-3-one have been compared. The pyrolysis of benzotriazoles and benzisoxazolones appears to involve an iminocarbene intermediate, although the N-benzyl analogues react by radical pathways. Benzisothiazolones appear to form iminoketene intermediates.
通过闪蒸真空热解法得到的N-乙酰基、N-甲基、N-苄基以及N-杂芳基取代的苯并三唑、2,1-
苯并恶唑-3-酮和2,1-
苯并噻唑-3-酮的产物已进行了比较。苯并三唑和苯并
异恶唑酮的热解过程似乎涉及
亚胺卡宾中间体,尽管N-苄基衍
生物通过自由基途径反应。苯并
异噻唑酮似乎形成了
亚胺炔酮中间体。