2-[1,3-bis(ethoxycarbonyl)azulen-6-yl]ethynyltriphenyl-phosphonium bromide

Noboru Morita, Shiro Moriyama, Kozo Toyota, Masataka Watanabe, Shigeru Kikuchi, Shunji Ito, Kunihide Fujimori

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


2-[1,3-Bis(ethoxycarbonyl)azulen-6-yl]ethynyltriphenylphosphonium bromide was prepared from diethyl 6-ethynyl-1,3-azulenedicarboxylate. Its NMR spectroscopic property was made clear. Furthermore, its reactivity with o-substituted aniline was studied, comparing with 1-and 2-ethynyl azulene derivatives. We found that 2-[3-(methoxycarbonyl)azulen-1-yl]ethynyltriphenyl- phosphonium bromide also reacted with o-substituted anilines in CHCl3 to give corresponding 2-[1,3-bis(ethoxycarbonyl)azulen-6-yl]benzoazoles. However, in DMSO another products were obtained.

Original languageEnglish
Pages (from-to)1283-1296
Number of pages14
Issue number2
Publication statusPublished - 2010 Feb 28

ASJC Scopus subject areas

  • Analytical Chemistry
  • Pharmacology
  • Organic Chemistry


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