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

Hidetsura Cho, Shinsuke Matsuki

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)127-131
Number of pages5
JournalHeterocycles
Volume43
Issue number1
DOIs
Publication statusPublished - 1996 Jan 1

ASJC Scopus subject areas

  • Analytical Chemistry
  • Pharmacology
  • Organic Chemistry

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