ピルボアミドの2,3-ジメチル-2-ブテンへの光付加

抄録

The photoreaction of pyruvamide with 2, 3-dimethylo-2-butene in ethanol gave products [1], [2], [3], and [4] in a fairly high conversion. The products [1], [2], and [3], are 1: 1adducts of pyruvamide and 2, 3-dimethy1-2-butene, and [4], is a pinacol. In low conversion experiments in methanol, [2], J was exclusively produced. The ultimate quantum yield for the formation of [2], was 0.036. Stern-Volmer slope of 103.6 l mo^-1 was obtained by naphthalene quenching experiment. From this experiment, it was confirmed that [2] was formed via the triplet state of pyruvamide. From the dependence of quantum yield on alkene concentration and quenching experiment, the ratio of the rate constants of elementary processes was calculated.