Photocatalytic reactions are useful tools for organic synthesis. Photooxygenation of furan derivatives have been successfully applied to the synthesis of complex nitrogen containing heterocycles. Enzyme catalyzed asymmetric oxidations are simplified when combined with photoredox processes. The synthesis of fluoroorganic compounds is important for the preparation of biologically active products. Thus, photoredox catalytic trifluoromethylation of aromatic and especially heteroaromatic compounds is particular interesting for application in pharmaceutical industry.