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Öğe Benzimidazole, benzothiazole and benzoxazole ruthenium(II) complexes; catalytic synthesis of 2,3-dimethylfuran(Wiley-VCH Verlag, 2000) Çetinkaya B.; Özdemir I.; Bruneau C.; Dixneuf P.H.Fourteen ruthenium(II) complexes of the type [RuCl2(?6-arene)L], (arene = 1,4-MeC6H4Pr(i) 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(?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.
