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

Hidetsura Cho; Shinsuke Matsuki

doi:10.3987/COM-95-7238

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

Hidetsura Cho, Shinsuke Matsuki

PHA - Molecular Pharmaceutical Science

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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
Pages (from-to)	127-131
Number of pages	5
Journal	Heterocycles
Volume	43
Issue number	1
DOIs	https://doi.org/10.3987/COM-95-7238
Publication status	Published - 1996 Jan 1

ASJC Scopus subject areas

Analytical Chemistry
Pharmacology
Organic Chemistry

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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).",

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AB - 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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