Abstract
The cyclization reactions with CH3SO3H/P2O5 (PPMA) or CF3SO3H/P2O5 (PPTMA) at 80-100°C for 3-10 min afforded several heterocycles (6, 7-dihydropyrrolo[2, 3-c]azepin-4,8(1H, 5H)-dione, 4-oxo-4,5,6,7-tetrahydrothianaphthene, carbostyril derivatives).
Original language | English |
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Pages (from-to) | 127-131 |
Number of pages | 5 |
Journal | Heterocycles |
Volume | 43 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1996 Jan 1 |
ASJC Scopus subject areas
- Analytical Chemistry
- Pharmacology
- Organic Chemistry