Room temperature C(sp2)–H oxidative chlorination via photoredox catalysis† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c7sc03010j Click here for additional data file.
نویسندگان
چکیده
Photoredox catalysis has been developed to achieve oxidative C-H chlorination of aromatic compounds using NaCl as the chlorine source and Na2S2O8 as the oxidant. The reactions occur at room temperature and exhibit exclusive selectivity for C(sp2)-H bonds over C(sp3)-H bonds. The method has been used for the chlorination of a diverse set of substrates, including the expedited synthesis of key intermediates to bioactive compounds and a drug.
منابع مشابه
Room temperature decarboxylative cyanation of carboxylic acids using photoredox catalysis and cyanobenziodoxolones: a divergent mechanism compared to alkynylation† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sc04907a Click here for additional data file.
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Versatile telluracycle synthesis via the sequential electrophilic telluration of C(sp2)–Zn and C(sp2)–H bonds† †Electronic supplementary information (ESI) available. CCDC 1523262–1523264. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc01162h Click here for additional data file. Click here for additional data file.
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A mild and fully catalytic aryl–aryl cross coupling via gold-catalysed C–H activation has been achieved by merging gold and photoredox catalysis. The procedure is free of stoichiometric oxidants and additives, which were previously required in gold-catalysed C–H activation reactions. Exploiting dual gold and photoredox catalysis confers regioselectivity via the crucial gold-catalysed C–H activa...
متن کاملStoichiometric to catalytic reactivity of the aryl cycloaurated species with arylboronic acids: insight into the mechanism of gold-catalyzed oxidative C(sp2)–H arylation† †Electronic supplementary information (ESI) available: Detailed experimental procedures, analytical data. CCDC 1000469, 1007212 and 1019879. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4sc02070g Click here for additional data file. Click here for additional data file.
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