Transition‐Metal‐Catalyzed Alkylations of Amines with Alkyl Halides: Photoinduced, Copper‐Catalyzed Couplings of Carbazoles
作者:Alex C. Bissember、Rylan J. Lundgren、Sidney E. Creutz、Jonas C. Peters、Gregory C. Fu
DOI:10.1002/anie.201301202
日期:2013.5.3
N‐alkylations of carbazoles with a variety of secondary and hindered primary alkyl iodides can be achieved by using a simple precatalyst (CuI) under mild conditions (0 °C) in the presence of a Brønsted base; at higher temperature (30 °C), secondary alkyl bromides also serve as suitable coupling partners. A Li[Cu(carbazolide)2] complex has been crystallographically characterized, and it may serve as
Copper-catalyzed N-alkylation of indoles by N-tosylhydrazones
作者:Li Ling、Jing Cao、Jianfeng Hu、Hao Zhang
DOI:10.1039/c7ra03765a
日期:——
An efficient method for the direct N-alkylation of indoles via copper-catalyzed reductive cross coupling between N-tosylhydrazones and indole reagents has been developed. The reaction was performed in the presence of copper iodide and potassium hydroxide by utilization of tri(p-tolyl)phosphine as a ligand. A wide variety of N-alkylated indoles were obtained in moderate to good yields. The application