Utilization of microflow reactors to carry out synthetically useful organic photochemical reactions

This review focuses on recent advances that have been made in conducting synthetically useful organic photochemical reactions by using microflow reactors. Attention is given to the utilization of this technique in the scale-up of a variety of photochemical processes including intermolecular photocycloadditions, intramolecular photocycloadditions and photocyclizations, photoadditions, photoreductions, photoisomerizations, photosubstitutions, photooxidations, photorearrangements, and heterogeneous photocatalytic reactions. In many examples, the use of the microflow method is compared to those carried out in batch systems. Finally, advantages and disadvantages of microflow photoreactions along with the possible employment of this approach to scale-up industrial photochemical processes are discussed. (C) 2016 Elsevier B.V. All rights reserved.