Organic photoredox catalysis for the oxidation of silicates: applications in radical synthesis and dual catalysis.
Metal free photooxidation of alkyl bis(catecholato)silicates with the organic dye 1,2,3,5 tetrakis(carbazol 9 yl) 4,6 dicyano benzene (4CzIPN) allows the smooth formation of alkyl radicals. The latter can be efficiently engaged either with radical acceptors to provide homolytic addition products or in photoredox/nickel dual catalysis reactions to obtain cross coupling products.
Chemical communications