Photolytic transformations of p-quinones

Quantum yields, apparent photolysis rate constants, and energies of activation of the dark stages in the decomposition of 3,6-di- tert -butyl-2,3-epoxy-5-hydroxycyclohex-2-ene-1,4-dione, 1,4-naphthoquinone, and 9,10-anthraquinone under irradiation at λ 313 nm and of 1,4-benzoquinone under irradiation at λ 232–254 nm were determined. Products of photochemical transformations of these compounds in saturated hydrocarbons were identified, and a probable mechanism of these transformations was proposed.