Copper-Catalyzed Oxidative Diamination of Terminal Alkynes by Amidines: Synthesis of 1,2,4-Trisubstituted Imidazoles
作者:Jihui Li、Luc Neuville
DOI:10.1021/ol400560m
日期:2013.4.5
An efficientcopper-catalyzedsynthesis of 1,2,4-trisubstituted imidazoles using amidines and terminalalkynes has been developed. Overall, the oxidative process, which involves Na2CO3, pyridine, a catalytic amount of CuCl2·2H2O, and oxygen (1 atm), consisted of a regioselective diamination of alkynes allowing the synthesis of diverse imidazoles in modest to good yields.
已经开发了使用am和末端炔烃的铜催化的1,2,4-三取代的咪唑的高效铜催化合成。总体而言,该氧化过程涉及Na 2 CO 3,吡啶,催化量的CuCl 2 ·2H 2 O和氧气(1个大气压),由炔烃的区域选择性加重反应组成,从而可以适度地合成出各种咪唑。产量。