V.I. Porkhun, V.E. Avvakumov, I.V. Polyakov, P.P. Vojtenko

Photoreactions various ketones are investigated. On signs 13С and 1Н it is established, that polarization arises at decomposition raised ketone in а triplet condition. Results of research of chemical polarization of nucleus and the mechanism of photochemical reactions of some хинонов are resulted: methyl-propil ketone СН3СОСН2СН2СН3 (I), methyl-benzil PhCH2COCH3 (II) and methyl-adamantil ketone СН3СОС10Н15 (III). At-disintegration of the raised molecule ketone (I) the radical pair undergoing two types endocellular transformation is formed: recombination with regeneration of a molecule initial ketone and disproportion with formation of propylene and acetaldehyde. In differing from (I) photolysisе ketone (II) goes only as Норриш-I. Photolysisе ketone (III) proceeds as Норриш-I in а triplet condition without disproportion in radical pairs. The mechanism of elementary transformations of radicals and the radical pairs arising at photolysisе studied ketones is established.