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Fluorine-containing aromatic diamines have been synthesized as monomers for an investigation of polyimides of low dielectric constant. For most compounds, the synthetic route has been based on nucleophilic aromatic substitution of alcohols and phenols, on appropriate aromatic nitro compounds, and subsequent hydrogenation of the dinitro compounds obtained. The separation and purification of products was attained by flash column chromatography, and characterization of the products by molecular weight determination and elemental analysis.
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Nadji et al. (1991) studied this question.
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