Heterocyclic compounds. I. Reactions of o-amino-carboxamide with β-diketones: Synthesis of imidazo[1,5-a]pyrimidine and pyrazolo[1,5-a]pyrimidine derivatives

Chern Ji-Wang, Lee Chung-Chi, Liaw Yen-Chywan, H. J. Andrew Wang

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3 Citations (Scopus)

Abstract

Treatment of 5-aminoimidazole-4-carboxamide hydrochloride (1) and 5-aminopyrazole-4-carboxamide hemisulfate (2) with β-diketones furnished 2,4-disubstituted imidazo[1,5-a]pyrimidine-8-carboxamide (7) and 5,7-disubstituted pyrazolo[1,5-a]pyrimidine-3-carboxamide (8) respectively. The 1H nmr and 13C nmr spectra of these compounds and the X-ray crystallography of compound 7a are discussed.

Original languageEnglish
Pages (from-to)1133-1145
Number of pages13
JournalHeterocycles
Volume34
Issue number6
DOIs
Publication statusPublished - Jun 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Pharmacology
  • Organic Chemistry

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