Photocatalytic dehydrogenative C(sp2)–P coupling reaction between dibenzo[b,f][1,4]oxazepanes and phosphine oxides

Abstract

Visible-light-induced cross-dehydrogenative coupling between heptameric cyclic imine derivatives and diaryl phosphine oxides has been developed and heptameric cyclic imine phosphate derivatives have been synthesized by using rhodamine B as a photocatalyst. Transition metal-free catalysis, green synthesis and efficient synthesis under ambient conditions are attractive aspects of the method.