Reaction of cobalt porphyrins with aldehydes in the presence of t-butyl hydroperoxide

Oxygen mediated highly efficient cobalt(ii) porphyrin-catalyzed reduction of functional chromones: experimental and computational studies

The highly efficient oxygen mediated reduction of functional chromones with sodium borohydride (NaBH₄) catalyzed by cobalt(ii) porphyrins afforded biologically active chroman-4-ols as the reduction products in 80–98% yields.