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dc.contributor.authorEscolástico, Consuelo-
dc.contributor.authorSanta María, María Dolores-
dc.contributor.authorClaramunt, Rosa M.-
dc.contributor.authorJimeno, M. Luisa-
dc.contributor.authorAlkorta, Ibon-
dc.contributor.authorFoces-Foces, Concepción-
dc.contributor.authorHernández Cano, Félix-
dc.contributor.authorElguero, José-
dc.identifier.citationTetrahedron 50(43) : 12489-12510 (1994)es_ES
dc.description.abstractThe hydroquinones obtained by addition of imidazole. 2methylimidazole and henzimidazole to 1,Cbenzoquinone and 1,Cnaphthoquinone have been isolated and identified. In the case of 1,4&enzoquinone they are monosubstituted hydroquinones la - lc, o-disubstitutcd hydroquinones 2a - 2~. and pdisubstituted derivatives 3a - 3c while in the case of 1.4-naphthoquinone, only disubstituted derivatives 5a and SC have been isolated. In solution, 2.3-bis(2’-methylimidazol-l’-yl)-l,4dihydroxybenzene (2b), 2,3-bis (benzimidazol-l’-yl)-1,4-dihydroxybenzene (2~) and 2.3-bis(benzimidazol-l’-yl)-1.4- dihydroxynaphthalene (SC) exist as mixtures of meso and d.1 isomers. NMR spectroscopy (n.0.e. experiments in lH NMR and solid-state *SC CPMAS spectra) and AM1 semiempirical calculations have been used to establish the stmctum OftbeisonErsbothinthe solid state and in solution as well as their interconversion pathways. Compound 2c-d,l crystallizes with two methanol solvate molecules as guests and it has a crystallographic twofold axis through the middle. The host molecules are linked together by means of the methanol molecules through 0-H...O/N hydrogen bonds giving rise to chains along the c axis centrosymmetrically l&ted.es_ES
dc.description.sponsorshipThanks are given to DGICYT of Spain for financial support (Project Number PB-90- 0226~CO2 and PB90-0226~CO2), one of us (C.E.) is indebted to UNED for a grant and another (LA.) for a C.S.I.C. contractes_ES
dc.subjectMononuclear Ruthenium Compoundses_ES
dc.titleImidazole and benzimidazole addition to quinones. Formation of meso and d,l isomers and crystal structure of the d,l isomer of 2,3-Bis(benzimidazol-1'-yl)-1,4-dihydroxybenzenees_ES
dc.description.peerreviewedPeer reviewedes_ES
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