Synthesis of 2-aryl-2H,4H-imidazo[4,5-d][1,2,3]triazoles from triethyl N-(1-ethyl-2-methyl-4-nitro-1H-imidazol-5-yl)phosphorimidate by reaction with aryl isocyanates
作者:Abutariq Taher、Sandra Eichenseher、Alexandra M. Z. Slawin、George Tennant、George W. Weaver
DOI:10.1039/b205216b
日期:2002.8.23
The synthesis of a series of 2-aryl-2H,4H-imidazo[4,5-d][1,2,3]triazoles is reported. These compounds are obtained in moderate to good yields by reaction of triethyl N-(1-ethyl-2-methyl-4-nitro-1H-imidazol-5-yl)phosphorimidate with aryl isocyanates. The X-ray crystal structures of triethyl (N-1-methyl-4-nitro-1H-imidazol-5-yl)phosphorimidate and a 2-(4-trifluoromethylphenyl) substituted 2H,4H-imidazo[4,5-d][1,2,3]triazole are reported. Spectroscopic evidence is provided for a carbodiimide intermediate proposed in the reaction mechanism.
报告了一系列 2-芳基-2H,4H-咪唑并[4,5-d][1,2,3]三唑的合成。这些化合物是通过 N-(1-乙基-2-甲基-4-硝基-1H-咪唑-5-基)膦酰亚胺三乙酯与芳基异氰酸酯反应得到的,收率中等至良好。报告了 N-(1-乙基-2-甲基-4-硝基-1H-咪唑-5-基)膦酰亚胺三乙酯和 2-(4-三氟甲基苯基)取代的 2H,4H-咪唑并[4,5-d][1,2,3]三唑的 X 射线晶体结构。光谱证明了反应机理中提出的碳化二亚胺中间体。