SYNTHESIS AND AROMATIZATIONAL REARRANGEMENTS OF NEW IMINO-2,5-CYCLOHEXADIENYLIDENE HYDRAZONO-2,5-CYCLOHEXADIENYLIDENE, AND AZINO-2,5-CYCLOHEXADIENYLIDENE SYSTEMS AS LIGANDS FOR CASCADE TYPE METALLOCOMPLEXES

Citation
Va. Nikanorov et al., SYNTHESIS AND AROMATIZATIONAL REARRANGEMENTS OF NEW IMINO-2,5-CYCLOHEXADIENYLIDENE HYDRAZONO-2,5-CYCLOHEXADIENYLIDENE, AND AZINO-2,5-CYCLOHEXADIENYLIDENE SYSTEMS AS LIGANDS FOR CASCADE TYPE METALLOCOMPLEXES, Russian chemical bulletin, 46(2), 1997, pp. 350-354
Citations number
20
Categorie Soggetti
Chemistry
Journal title
ISSN journal
10665285
Volume
46
Issue
2
Year of publication
1997
Pages
350 - 354
Database
ISI
SICI code
1066-5285(1997)46:2<350:SAARON>2.0.ZU;2-Q
Abstract
Three approaches to the synthesis of N-substituted imino-, hydrazono-, and azino-2, 5-cyclohexadienylidene systems based on reactions of 4-m ethyl-4-trichloromethylcyclohexa-2,5-dienone with aminophenols and hyd razones and condensation of hydrazones of para-semiquinoid ketones wit h carbonyl compounds, including that of the ferrocene series, were rea lized. The latter reaction, when applied to 3,6-dibromophenanthrene-9, 10-quinone, was accompanied by quantitative aromatizational molecular rearrangement with the elimination of the CCl3 group. Using Rh-I compl exes as an example, it was shown that the heteroorganic ligands obtain ed can be used far the synthesis of mixed-ligand metallocomplexes with triple coordination of the metal atom including simultaneous metal-li gand interactions of the n-, pi-, and sigma-types.