A Mild and Efficient Method for Copper-Catalyzed Ullmann-Type N-Arylation of Aliphatic Amines and Amino Acids
作者:Yuyang Jiang、Hua Fu、Qun Jiang、Deshou Jiang、Yufen Zhao
DOI:10.1055/s-2007-982564
日期:2007.7
An efficient and general protocol for copper-catalyzed N-arylation of aliphatic amines and amino acids has been developed using aryl iodides under mild conditions (coupling temperature at 25-35 degrees C). For the N-(o-nitrophenyl) amino acid derivatives, subsequent reduction of the nitro group in the presence of tin(II) chloride resulted in 3,4-dihydroquinoxalin-2(1H)-one derivatives in good yields
使用芳基碘化物在温和条件下(偶联温度为 25-35 摄氏度)开发了一种用于铜催化脂肪胺和氨基酸 N-芳基化的高效通用方案。对于 N-(o-硝基苯基) 氨基酸衍生物,随后在氯化锡 (II) 存在下还原硝基会以良好的产率得到 3,4-二氢喹喔啉-2(1H)-one 衍生物。