Synthesis of Bisquinolone-Based Mono- and Diphosphine Ligands of the Aza-BINAP Type.

[摘要]：Mono- and bisphosphine ligands based on the 4,4'-bisquinolone structural framework (BIQUIP ligands) were generated by direct microwave-assisted Pd-catalyzed C-P cross-coupling reactions employing the corresponding heteroaryl bromides and diphenylphosphine as substrates. One product, 4,4'-bis(3-diphenylphosphino-6,7-dimethoxy-1-methylquinolin-2(1H)-on e), was tested as a cocatalyst in the Heck arylation of 2,3-dihydrofuran by PhOTf.

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