Photochemistry of dibenzothiophene-S,S-dioxide: Reactions of a highly constrained biradical

Article abstract of DOI:10.1016/0040-4039(94)85348-7

Photolysis of dibenzothiophene sulfoxide in isopropranol provides biphenyl in quantitative yield via two sequential photochemical reactions. Mechanistic aspects of the reaction are discussed, including the unusual observation that isoprene increases the quantum of loss of starting material.