Transition metal complexes of N-heterocyclic carbenes, method of preparation and use in transition metal catalyzed organic transformations
申请人:Organ G. Michael
公开号:US20070073055A1
公开(公告)日:2007-03-29
The present invention relates to catalysts of transition metal complexes of N-heterocyclic carbenes, their methods of preparation and their use in chemical synthesis. The synthesis, ease-of-use, and activity of the compounds of the present invention are substantial improvements over in situ catalyst generation. Further, the transition metal complexes of N-heterocyclic carbenes of the present invention may be used as precatalysts in metal-catalyzed cross-coupling reactions.
The first palladium-catalyzed Sonogashira coupling of unactivated secondary alkyl bromides
作者:Gereon Altenhoff、Sebastian Würtz、Frank Glorius
DOI:10.1016/j.tetlet.2006.02.111
日期:2006.4
A palladium-carbene catalyzed Sonogashira coupling of unactivated alkylbromides with alkyl substituted alkynes is reported. For the first time, unactivated secondaryalkyl halides were successfully employed in Sonogashirareactions.