Palladium-Catalyzed Three-Component Tandem Coupling-Carboannulation Reaction Leading to Polysubstituted
Qingfeng Liu1, Tong-Xin Liu1, Jinliang Ma1
1Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China.
Abstract:
The first example of transition-metal catalyzed multicomponent carboannulation of [60]fullerene has been developed. [60]Fullerene, 2-(2,3-allenyl)malonates, and (hetero)aryl iodides undergo a Pd(0)-catalyzed tandem coupling-carboannulation process for regioselective access to novel polysubstituted [60]fullerene-fused cyclopentane derivatives with a wide range of substrate scope and high functional group compatibility. A plausible mechanism involving the formation of a fullerene-π-allylpalladium complex with the characteristic of a fullerene cation as a key intermediate has been proposed.
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