Ionic Liquid Promoted Diazenylation of N-Heterocyclic Compounds with Aryltriazenes under Mild Conditions

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• 作者：Dawei Cao ; Yonghong Zhang ; Chenjiang Liu ; Bin Wang ; Yadong Sun ; Ablimit Abdukadera ; Haiyan Hu ; Qiang Liu
• 刊名：Organic Letters
• 出版年：2016
• 出版时间：May 6, 2016
• 年：2016
• 卷：18
• 期：9
• 页码：2000-2003
• 全文大小：383K
• 年卷期：0
• ISSN：1523-7052

文摘

An efficient, mild, and metal-free approach to direct diazenylation of N-heterocyclic compounds with aryltriazenes using Brønsted ionic liquid as a promoter has been developed for the first time. Many N-heterocyclic azo compounds were synthesized in good to excellent yields at room temperature under an open atmosphere. Notably, the promoter 1,3-bis(4-sulfobutyl)-1H-imidazol-3-ium hydrogen sulfate could be conveniently recycled and reused with the same efficacies for at least four cycles.