Efficient and facile syntheses of [4,5]-annelated pyridazines from 4-pyridazinecarbaldehydes

Péter Mátyus, Kaoru Fuji, Kiyoshi Tanaka

Research output: Contribution to journalArticle

24 Citations (Scopus)


New synthetic approaches to novel [4,5]-annelated pyridazine derivatives through the closely related intermediates, are described. These include derivatives of two angularly oriented ring systems (4) and (5), as well as those of pyrano[2,3-d]- and pyrazolo[3,4-d]pyridazines (6) and (8). The tertiary amino effect was successfully applied to the construction of the former compounds, whereas the latter compounds were formed by the cyclization based on addition-elimination sequences.

Original languageEnglish
Pages (from-to)171-174
Number of pages4
Issue number1
Publication statusPublished - Jan 1 1994

ASJC Scopus subject areas

  • Analytical Chemistry
  • Pharmacology
  • Organic Chemistry

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