Ring construction of several heterocycles with phosphorus pentoxide-methanesulfonic acid (PPMA)

DOI: 10.3987/COM-95-7238

Source and publish data:

Heterocycles p. 127 - 131 (1996)

Update date:2022-08-17

Topics:

Authors:

Cho, Hidetsura

Matsuki, Shinsuke

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Article abstract of DOI:10.3987/COM-95-7238

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).

Full text of DOI:10.3987/COM-95-7238

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