Benzimidazole, benzothiazole and benzoxazole ruthenium(II) complexes; Catalytic synthesis of 2,3-dimethylfuran


CETINKAYA B., Ozdemir I., BRUNEAU C., DIXNEUF P.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, no.1, pp.29-32, 2000 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: Issue: 1
  • Publication Date: 2000
  • Journal Name: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.29-32
  • Keywords: arene complexes, ruthenium, benzimidazole, benzothiazole, benzoxazole, cycloisomerisation, CRYSTAL-STRUCTURE, CYCLIZATION, DERIVATIVES, REACTIVITY, LIGANDS

Abstract

Fourteen ruthenium(II) complexes of the type [RuCl2(eta(6)-arene)L], (arene = 1,4-MeC6H4Pri or C6Me6; L = benzimidazole derivative in which the NH group is substituted by N-alkyl or isoelectronic O or S atoms) have been prepared by cleavage of [RuCl2(eta(6)-arene)](2) with the N-heterocycle L. Their spectroscopic and electrochemical properties are described. The effect of the nature of the benzazole (L) on the catalytic activity of these complexes for the intramolecular cyclization of (Z)-3-methylpent-2-en-4-yn-1-ol into 2,3-dimethylfuran has also been studied; the benzimidazole complexes were found to be the most active.