- Aromatic Chlorosulfonylation by Photoredox Catalysis
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Visible-light photoredox catalysis enables the efficient synthesis of arenesulfonyl chlorides from anilines. The new protocol involves the convenient in situ preparation of arenediazonium salts (from anilines) and the reactive gases SO2and HCl (from aqueous SOCl2). The photocatalytic chlorosulfonylation operates at mild conditions (room temperature, acetonitrile/water) with low catalyst loading. Various functional groups are tolerated (e.g., halides, azides, nitro groups, CF3, SF5, esters, heteroarenes). Theoretical and experimental studies support a photoredox-catalysis mechanism.
- Májek, Michal,Neumeier, Michael,Jacobi von Wangelin, Axel
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p. 151 - 155
(2017/01/17)
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- Synthesis of aryl sulfonamides via palladium-catalyzed chlorosulfonylation of arylboronic acids
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A palladium-catalyzed method for the preparation of sulfonamides is described. The process exhibits significant functional group tolerance and allows for the preparation of a number of arylsulfonyl chlorides and sulfonamides under mild conditions.
- Debergh, J. Robb,Niljianskul, Nootaree,Buchwald, Stephen L.
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supporting information
p. 10638 - 10641
(2013/08/23)
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- Preparation of nitrogen-containing 15-membered triolefinic macrocycles: (E,E,E)-1,6,11-tris(arylsulfonyl)-1,6,11-triazacyclopentadeca-3,8,13-trienes
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Three routes to (E,E,E)-1,6,11-tris(arylsulfonyl)-1,6,11-triazacyclopentadeca-3,8,13-trienes are described. Optimization of the preparation of key intermediates has opened the way to efficient synthesis of a broad variety of 15-membered, nitrogen-containing triolefinic macrocycles.
- Cerezo, Silvia,Cortès, Jordi,Galvan, David,Lago, Elena,Marchi, Caroline,Molins, Elies,Moreno-Ma?as, Marcial,Pleixats, Roser,Torrejón, Javier,Vallribera, Adelina
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p. 329 - 337
(2007/10/03)
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