Abstract
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 language | English (US) |
|---|---|
| Pages (from-to) | 893-897 |
| Number of pages | 5 |
| Journal | Chinese Journal of Organic Chemistry |
| Volume | 24 |
| Issue number | 8 |
| State | Published - Aug 1 2004 |
Keywords
- 1,2,4-triazolo[3,2] [1,5]benzoxazepin-2-one
- Geminal arylazo isocyanate
- Rearrangement
- Ring closure
ASJC Scopus subject areas
- Organic Chemistry