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2005
Organo-iron compounds
S 7100
Synthesis of New 2-Ferrocenyl-5-fluoro-6-(4-substituted-1-piperazinyl)-1H-benzof Potential Biological Interest. — Ferrocenyl benzimidazoles (VII) are
27- 171 imidazoles
prepared by reaction of the key intermediates (V) with ferrocenylcarboxaldehyde (VI)
via Schiff base intermediates which cyclize to give the targets by using nitrobenzene as
a solvent and oxidant. Key intermediate (V) is prepared from dihalogenated aniline (I)
in five steps involving acetylation, nitration, deacetylation, piperazinylation and reduction. Ferrocenyl benzimidazoles (VII) represent compounds for further biological evaluation and which may be used as electron reservoir systems and in fields such as electrocatalysis. — (ABDEL-JALIL*, R. J.; VOELTER, W.; J. Heterocycl. Chem. 42
(2005) 1, 67-71; Dep. Chem., Fac. Sci. Arts, Hashemite Univ., 13115 Zarqa, Jordan;
Eng.) — H. Hoennerscheid
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