6,7-Dihydroquinolin-8(5H)-one oxime (L3) was found to serve as a superior ligand for the CuI-catalyzed N-arylation of imidazoles with aryl iodides, bromides, and electron-deficient chlorides in water. Moreover, the CuI/L3 catalyst system enabled the coupling reactions to take place smoothly with high yields under a low catalyst loading (0.1–1 mol% CuI and 0.2–2 mol% L3).
                                    6,7-二氢
喹啉-8(5H)-酮
肟(L3)被发现是一种优秀的
铜I催化的酰胺键N-芳基化反应
配体,该反应以
水为溶剂,使用
碘化物、
溴化物和电子缺乏的
氯化物作为底物。此外,在较低的催化剂负载量(
铜I为0.1–1 mol%,L3为0.2–2 mol%)下,
铜I/L3催化体系能顺利进行耦合反应并获得高产率。