An Efficient Synthesis of [1,2,4]Triazolo[3,2-d][1,5]benzoxazepin-2-thiones, a Kind of Novel Tricyclic O,N-Heterocycles

Zheng Li, Qing Qing Meng, Quan Rui Wang, Feng Gang Tao

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

A series of novel tricyclic O,N-heterocycles, [1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones 7 were achieved via acid-induced ring closure of the geminal arylazo isothiocyanate compounds 5 which were derived from substituted chroman-4-ones, followed by feasible ring expansion with simultaneous insertion of the nitrogen atom into the carbon skeleton. The X-ray crystal structure of 7d was also described.

Original languageEnglish (US)
Pages (from-to)290-295
Number of pages6
JournalChinese Journal of Chemistry
Volume22
Issue number3
DOIs
StatePublished - Mar 2004

Keywords

  • [1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones
  • Geminal arylazo isothiocyanate
  • Rearrangement
  • Ring closure

ASJC Scopus subject areas

  • Chemistry(all)

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