Enhanced efficiency and regioselectivity of intramolecular (2π+2π) photocycloaddition of 1-cyanonaphthalene derivative using microreactors

The intramolecular photocycloaddition of a 1-cyanonaphthalene derivative in microreactors made of poly(dimethylsiloxane) (PDMS) was examined. By using the microreactors and flow system, both the efficiency and regioselectivity increased compared with those under batch conditions.