Oxidation of Substituted β-Diketones with Hydrogen Peroxide: Synthesis of Esters through the Formation of Bridged 1,2,4,5-Tetraoxanes - Terent’ev, Alexander O.; Borisov, Dmitry A.; Yaremenko, Ivan A.; Ogibin, Yuri N.; Nikishin, Gennady I. (Synthesis, 2010)