作者:Floris Chevallier、Thomas Blin、Elisabeth Nagaradja、Frédéric Lassagne、Thierry Roisnel、Yury S. Halauko、Vadim E. Matulis、Oleg A. Ivashkevich、Florence Mongin
DOI:10.1039/c2ob25554e
日期:——
2-Aryl-1,2,3-triazoles were synthesized by cyclization of the corresponding glyoxal arylosazones, generated from commercial arylhydrazines. The deproto-metallation of 2-phenyl-1,2,3-triazole was attempted using different 2,2,6,6-tetramethylpiperidino-based mixed lithium–metal (Zn, Cd, Cu, Co, Fe) combinations, giving results in the case of Zn, Cd, and Cu. The lithium–zinc combination was next selected to apply the deprotonation–iodination sequence to all the 2-aryl-1,2,3-triazoles synthesized. The results were analyzed with the help of the CH acidities of the substrates, determined in THF solution using the DFT B3LYP method.
通过环化相应的glyoxal arylsazone(由商业化的aryldrazine生成)合成了2-芳基-1,2,3-三氮唑。尝试使用不同的2,2,6,6-四甲基哌啶基混合锂-金属(Zn、Cd、Cu、Co、Fe)组合进行2-苯基-1,2,3-三氮唑的去质子金属化,在Zn、Cd和Cu的情况下得到了结果。接着选择锂-锌组合,将去质子化-碘化序列应用于所有合成的2-芳基-1,2,3-三氮唑。借助DFT B3LYP方法在THF溶液中测定的底物CH酸度,对结果进行了分析。