Biphenyl- and phenylnaphthalenyl-substituted 1H-imidazole-4,5-dicarbonitrile catalysts for the coupling reaction of nucleoside methyl phosphonamidites.

Abstract

Crystal structures are reported for three substituted 1H-imidazole-4,5-dicarbonitrile compounds used as catalysts for the coupling reaction of nucleoside methyl phosphonamidites, namely 2-(3',5'-dimethylbiphenyl-2-yl)-1H-imidazole-4,5-dicarbonitrile, C19H14N4, (I), 2-(2',4',6'-trimethylbiphenyl-2-yl)-1H-imidazole-4,5-dicarbonitrile, C20H16N4, (II), and 2-[8… (More)
DOI: 10.1107/S0108270113009293

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