Diarylation of Alkenes by a Cu-Catalyzed Migratory Insertion/Cross-Coupling Cascade
摘要:
A strategy for the catalytic diarylation of alkenes is presented. The method involves the migratory insertion of alkenes into an Ar-Cu complex to generate a new C(sp(3))-Cu complex, which subsequently undergoes reaction with an aryl iodide to constitute a vicinal diarylation of an alkene. The method provides access to benzofuran- and indoline-containing products. Furthermore, highly diastereoselective examples are presented, allowing access to complex, stereochemically rich structures from simple alkene starting materials.
Design and Synthesis of Silica Supported Pd Nanoparticles: Application to Cascade Reactions
作者:Bhairi Lakshminarayana、Pradip S. Waghmare、Alavala Gopi Krishna Reddy、G. Satyanarayana、Ch. Subrahmanyam
DOI:10.1007/s10562-023-04442-8
日期:2024.4
Transition metal-catalyzed tandem reactions are highly prominent in organic synthesis. Especially, palladium-catalyzed biscarbofuctionalization of alkenes is remarkable. However, enabling this type of tandem reaction through heterogeneous catalysis is the most desirable. In this context, silica-supported Pd nanoparticles catalyzed tandem Heck followed by Suzuki coupling reaction has been developed via a dual
Palladium catalysed tandem cyclisation-anion capture processes. Part 3. Organoboron anion transfer agents
作者:Ronald Grigg、JoséM. Sansano、Vijayaratnam Santhakumar、Visuvanathar Sridharan、Ravishanker Thangavelanthum、Mark Thornton-Pett、David Wilson
DOI:10.1016/s0040-4020(97)00754-0
日期:1997.8
The cyclisation-anion capture protocol has been applied to a wide range of starter and terminating species to effect regio-and stereo-specific mono-and bis-cyclisation processes in which a variety of organoboronderivatives function as anion transfer reagents. Direct capture (no cyclisation) is rarely a problem and it can usually be suppressed by modification of the reaction conditions. (C) 1997 Elsevier Science Ltd.