Heterogeneous Cu<sup>II</sup>-Catalysed Solvent-Controlled Selective N-Arylation of Cyclic Amides and Amines with Bromo-iodoarenes
作者:Debasish Kundu、Sukalyan Bhadra、Nirmalya Mukherjee、Bojja Sreedhar、Brindaban C. Ranu
DOI:10.1002/chem.201302645
日期:2013.11.11
A selective N‐arylation of cyclic amides and amines in DMF and water, respectively, catalysed by CuII/Al2O3 has been achieved. This protocol has been employed for the synthesis of a library of arenes bearing a cyclic amide and an amine moiety at two ends, including a few scaffolds of therapeutic importance. The mechanism has been established based on detailed electron paramagnetic resonance (EPR) spectroscopy
已经实现了Cu II / Al 2 O 3催化的DMF和水中的环状酰胺和胺的选择性N-芳基化反应。该方案已用于合成在两个末端带有环酰胺和胺部分的芳烃文库,包括一些具有治疗重要性的支架。该机理是基于详细的电子顺磁共振(EPR)光谱,X射线光电子能谱(XPS),UV漫反射光谱(DRS)和电感耦合等离子体质谱(ICP-MS)研究在不同催化剂下建立的反应的各个阶段。回收Cu II / Al 2 O 3催化剂并再循环用于随后的反应。