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Article Dans Une Revue Advanced Synthesis and Catalysis Année : 2017

Palladium-Catalyzed Regioselective Direct Arylation of Benzofurazans at the C-4 Position

Résumé

The palladium-catalyzed direct arylation of benzofurazans with aryl bromides to access 4-ary-lbenzofurazans proceeds in moderate-to-high yields using phosphine-free palladium acetate as the catalyst and potassium acetate as an inexpensive base. A wide variety of (hetero) aryl bromides, including bromopyridine and bromothiophene derivatives has been successfully employed. Palladium-catalyzed one-pot C-4, C-7-diarylation of benzofurazan was also achieved using a larger amount of aryl bromide. Moreover, the derivatization of 4-arylbenzofurazans into 4-arylquinaxolines is also reported.
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Dates et versions

hal-01578528 , version 1 (11-09-2017)

Identifiants

Citer

Imane Idris, Fazia Derridj, Jean-François Soulé, Henri Doucet. Palladium-Catalyzed Regioselective Direct Arylation of Benzofurazans at the C-4 Position. Advanced Synthesis and Catalysis, 2017, 359 (14), pp.2448-2456. ⟨10.1002/adsc.201700435⟩. ⟨hal-01578528⟩
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