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A series of biphenyl benzimidazoles diamidines 6a–i were synthesized from their respective diamidoximes, through the bis-O-acetoxyamidoxime followed by hydrogenation in glacial acetic acid/ethanol in the presence of Pd–C. The target compounds contain hydroxy and/or methoxy substituted 1,3-phenyl groups as the central spacer between the two amidino bearing aryl groups. All of the diamidines showed...
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