A Tandem Catalytic Approach to Methyleneindenes: Mechanistic Insights into gem-Dibromoolefin Reactivity
摘要:
The methylenindene scaffold can be prepared from readily available gem-dibromoolefins using an efficient palladium-catalyzed tandem intermolecular Suzuki/intramolecular Heck reaction. The reaction is highly modular and proceeds under mild conditions. The choice of ligand was found to be crucial to control the selectivity of the reaction. Isolation of intermediates under different conditions provides insight into the mechanism.
A Tandem Catalytic Approach to Methyleneindenes: Mechanistic Insights into <i>gem</i>-Dibromoolefin Reactivity
作者:Christopher S. Bryan、Mark Lautens
DOI:10.1021/ol100844v
日期:2010.6.18
The methylenindene scaffold can be prepared from readily available gem-dibromoolefins using an efficient palladium-catalyzed tandem intermolecular Suzuki/intramolecular Heck reaction. The reaction is highly modular and proceeds under mild conditions. The choice of ligand was found to be crucial to control the selectivity of the reaction. Isolation of intermediates under different conditions provides insight into the mechanism.
Efficient Assembly of 1-Methylene-1<i>H</i>-indenes via Palladium-Catalyzed Tandem Reaction of 1-(2,2-Dibromovinyl)-2-alkenylbenzene with Arylboronic Acid
作者:Shengqing Ye、Hui Ren、Jie Wu
DOI:10.1021/cc1000693
日期:2010.9.13
Highly efficient palladium-catalyzedreaction of 1-(2,2-dibromovinyl)-2-alkenylbenzene with arylboronic acid is disclosed, which generates the functionalized 1-methylene-1H-indenes in good yields. Tandem Suzuki−Miyaura coupling and Heckreactions are involved in this process.