Heterocycles p. 127 - 131 (1996)
Update date:2022-08-17
Topics:
Cho, Hidetsura
Matsuki, Shinsuke
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).
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