Synthesis of 2-oxo-[1,2,4]triazolo[3,2-d] [1,5]benzoxazepines: A kind of novel tricyclic O,N-heterocycles

Zheng Li, Quanrui Wang, Fenggang Tao

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The synthesis of a series of novel tricyclic O,N-heterocycles 7a-k, a kind of unprecedented 2-oxo-[1,2,4]triazolo[3,2-d][1,5]benzoxazepine derivatives, has been accomplished, featuring acid-induced ring closure of the geminal arylazo isocyanato compounds 5, which were prepared from chroman-4-ones in three steps, followed by feasible ring expansion and basic work-up.

Original languageEnglish (US)
Pages (from-to)1691-1702
Number of pages12
JournalSynthetic Communications
Volume34
Issue number9
DOIs
StatePublished - 2004

Keywords

  • Chroman-4-ones
  • Column chromatography
  • O,N-Heterocycles
  • Ring expansion
  • Synthesis

ASJC Scopus subject areas

  • Organic Chemistry

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