Copper-Catalyzed Aerobic Intramolecular Dehydrogenative Cyclization of N,N-Disubstituted Hydrazones through C sp 3H Functionalization
作者:Guangwu Zhang、Yan Zhao、Haibo Ge
DOI:10.1002/anie.201209618
日期:2013.2.25
An aerobic activity: The title reaction proceeds through an oxidation/cyclization/aromatization sequence under an atmosphere of O2 (see scheme; DBU=1,8‐diazabicyclo[5.4.0]undec‐7‐ene, DCE=1,2‐dichloroethane, DMS=dimethylsulfide). This coupling reaction is the first to proceed via an iminium intermediate for a CH bond‐functionalization process, and provides an environmentally friendly and atom‐efficient
有氧活性:标题反应在O 2气氛下通过氧化/环化/芳构化顺序进行(请参阅方案; DBU = 1,8-二氮杂双环[5.4.0] undec-7-ene,DCE = 1,2-二氯乙烷,DMS =二甲硫)。该偶联反应是第一个通过亚胺中间体进行CH键官能化过程的偶联反应,它为取代吡唑提供了环境友好且原子高效的途径。