Synthesis of novel 1,2,4-triazolo[3,2-d][1,5]benzoxazepin-2-ones

Zheng Li, Quan Rui Wang, Feng Gang Tao

Research output: Contribution to journalArticlepeer-review


A series of novel tricyclic O, N-heterocycles 5a-5g, a kind of unprecedented 1,2,4-triazolo[3,2-d]-[1,5] benzoxazepin-2-ones, have been achieved via acid-induced ring closure of isocyanatoarylazo compounds 3, which were prepared from chroman-4-one in three steps, followed by feasible rearrangement. The structural assignment of 5a has been ultimately accomplished by X-ray diffraction analysis.

Original languageEnglish (US)
Pages (from-to)893-897
Number of pages5
JournalChinese Journal of Organic Chemistry
Issue number8
StatePublished - Aug 1 2004


  • 1,2,4-triazolo[3,2] [1,5]benzoxazepin-2-one
  • Geminal arylazo isocyanate
  • Rearrangement
  • Ring closure

ASJC Scopus subject areas

  • Organic Chemistry


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