A one-potthree-componentreaction involving nitroarenes, (hetero)arylboronic acids, and potassium pyrosulfite leading to sulfonamides was described. A broad range of sulfonamides bearing different reactive functional groups were obtained in good to excellent yields through sequential C-S and S-N coupling that does not require metal catalysts.
Copper-Catalyzed Aminoarylation of Alkenes via Aminyl Radical Addition and Aryl Migration
作者:Jin-Lin Wang、Mei-Ling Liu、Jian-Yu Zou、Wen-Hui Sun、Xue-Yuan Liu
DOI:10.1021/acs.orglett.1c03973
日期:2022.1.14
We describe a new strategy for aminoarylation of alkenes by copper-catalyzed smilesrearrangement using O-benzoylhydroxylamines as the amine reagent. This method affords various β-amino amide derivatives possessing a quaternary carbon center with wide functional group tolerance and high regioselectivity. The mechanistic studies indicate that the transformation can involve aminyl radical intermediates
A Cascade Reaction of Michael Addition and Truce-Smiles Rearrangement to Synthesize Trisubstituted 4-Quinolone Derivatives
作者:Caixia Xie、Di Yang、Xinfeng Wang、Chen Ma
DOI:10.1021/acs.joc.0c01662
日期:2020.12.4
A novel transition-metal-free cascade reaction to synthesize 4-quinolone derivatives has been demonstrated. Michael addition and Truce-Smiles rearrangement are included in this protocol, providing a broad scope of 4-quinolones in moderate-to-excellent yields. This work serves as an example of the use of sulfonamides through Truce–Smiles rearrangement to build heterocyclic compounds under mild conditions
A highly efficient intramolecular selective aryl migration/desulfonylation of 2-bromo-N-aryl-N-(arenesulfonyl)amide via visiblelight-inducedphotoredoxcatalysis has been accomplished. This approach allows for the construction of a variety of multisubstituted N,2-diarylacetamide under mild reaction conditions.