A general route for synthesis of N-aryl phenoxazines via copper(<scp>i</scp>)-catalyzed N-, N-, and O-arylations of 2-aminophenols
作者:Nan Liu、Bo Wang、Wenwen Chen、Chulong Liu、Xinyan Wang、Yuefei Hu
DOI:10.1039/c4ra09593f
日期:——
copper(I)-catalyzed tandem reaction of N- and O-arylations of 2-[N-(2-chlorophenyl)amino]phenols was developed, by which a series of structurally novel N-aryl phenoxazines were synthesized efficiently. This success owes much to the discovery of highly efficient homogeneous copper(I)-catalyzed intramolecular O-arylation of chlorobenzenes under ligand-free-like conditions. Since 2-[N-(2-chlorophenyl)amino]phenols
开发了一种新型的铜(I)催化2- [ N-(2-氯苯基)氨基]苯酚的N-和O-芳基化串联反应,从而有效地合成了一系列结构新颖的N-芳基吩恶嗪。该成功很大程度上归功于在无配体样条件下高效高效的均相铜(I)催化的氯苯分子内O-芳基化的发现。由于2- [ N-(2-氯苯基)氨基]苯酚也是通过铜(I)催化的2-氨基苯酚的N-芳基化反应制备的,因此是有效合成N的一般途径。通过两步铜(I)催化2-氨基苯酚的N-,N-和O-芳基化反应建立了芳基吩恶嗪。