PHOTOCONVERSIONS OF ACETYLENE DIPEROXIDES IN A LIQUID-PHASE

Kinetic regularities of photodestruction of 2,5-dimethyl-2,5-bis (trip henylsilylperoxy)-3-hexyne (I), 5-dimethyl-2,5-bis(triphenylmethylpero xy)-3-hexyne (II), and -triphenylsilylperoxy-5-tert-butylperoxy)-3-hex yne (III) was studied in a liquid phase, and the composition of photod estruction products was determined. The photolysis of these compounds results in successive decomposition of O-O bonds with the formation of radicals. Quantum yields of photoreactions were determined. The hinde ring action of triphenylsilanol formed on the photodestruction of the silicon-containing diperoxides was established. The photostability of diperoxide II was shown to be significantly higher than that of monope roxide, 3-methyl-3-triphenylmethylperoxybutyne.