Exploration of the CuAAC Reaction for the Synthesis of Novel 3-(Triazol-1-yl)methyl-imidazo[1,2-a]pyridines
摘要:
The archetypical CuAAC click chemistry is explored to assemble diverse 3-(triazol-1-yl)methyl-imidazo[1,2-a]pyridines. The approach is simple, general, and environmentally benign to generate a library of novel triazolo-imidazo[1,2-a]pyridine derivatives in good yield (30-90%).
hydroxymethylation or methylenation of imidazo-heteroarenes with formaldehyde, generated in situ via the oxidative cleavage of ethylene glycol or glycerol (renewable reagents) through the Malaprade reaction. In the presence of ethylene glycol, a series of 3-hydroxymethyl-imidazo-heteroarenes was obtained in good to excellent yields. These compounds are important intermediates to access pharmaceutical drugs
在此,我们报告了一种 KIO 4介导的、可持续的和化学选择性的方法,用于一锅 C(sp 2 )-H 键羟甲基化或咪唑杂芳烃与甲醛的甲基化,通过乙二醇或甘油的氧化裂解原位生成。可再生试剂)通过马拉普拉德反应。在乙二醇的存在下,以良好到极好的收率获得了一系列 3-羟甲基-咪唑并杂芳烃。这些化合物是获取药物(例如唑吡坦)的重要中间体。此外,通过使用甘油,双(咪唑并[1,2 - a ]吡啶-3-基)甲烷衍生物以良好到优异的产率被选择性地获得。