Abstract
The 2-alkynylphenoxy and -phenylthio radicals, conveniently generated by pyrolytic loss of Ph(3)PO and Me(.) from suitably substituted phosphorus ylides, undergo tandem cyclisation leading to tri- and tetracyclic fused benzofurans and benzothiophenes. The fundamental heterocyclic compound benzothieno[3,2-b]benzofuran has been prepared for the first time.
| Original language | English |
|---|---|
| Pages (from-to) | 53-54 |
| Number of pages | 2 |
| Journal | Synlett |
| Issue number | 1 |
| Publication status | Published - Jan 1995 |
Keywords
- FLASH VACUUM PYROLYSIS
- PHOSPHORUS YLIDES
- TANDEM CYCLIZATION
- FUSED HETEROCYCLES
- BENZOTHIENO[3,2-B]BENZOFURAN