Selective N-Alkylation of Arylamines with Alkyl Chloride in Ionic Liquids: Scope and Applications
作者:Antonio Monopoli、Pietro Cotugno、Marina Cortese、Cosima Damiana Calvano、Francesco Ciminale、Angelo Nacci
DOI:10.1002/ejoc.201200202
日期:2012.6
An efficient N-selective alkylation of primary aromatic amines in molten quaternary ammonium salts, as the solvent, under relatively mild and base-free conditions is presented. On the basis of the Kamlet–Taft parameters and the nucleophilicity of the IL (ionic liquid) anions, the influence of the ionic liquid was evaluated. This protocol was validated on a larger multigram scale and with the syntheses
介绍了在相对温和和无碱的条件下,以熔融季铵盐作为溶剂,伯芳胺的有效 N 选择性烷基化。在 Kamlet-Taft 参数和 IL(离子液体)阴离子的亲核性的基础上,评估了离子液体的影响。该协议在更大的多克规模上进行了验证,并与生物活性杂环(例如,1,4-苯并噻嗪和喹喔啉)和新的高效 MALDI 基质的合成有关。