Goldschmidt; Acksteiner, Justus Liebigs Annalen der Chemie, 1958, vol. 618, p. 173,183
作者:Goldschmidt、Acksteiner
DOI:——
日期:——
Goldschmidt; Acksteiner, Chemische Berichte, 1958, vol. 618, p. 173,181
作者:Goldschmidt、Acksteiner
DOI:——
日期:——
Photochemistry of αα′-disbstituted azoalkanes. Part II. Photolytic dechlorination, decomposition, and oxidation of αα′-dichloro- and αα′-diacyloxy-azoalkanes
作者:Nissim Levi、Donald S. Malament
DOI:10.1039/p29760001249
日期:——
photoreactions are susceptible to oxiadation. The dechlorination: N2 extrusion ratio increases with increasing electron donor character of the substituted α-phenyl group. On the other hand irradiation of (IV) gives only N2 extrusion. A sensitization and quantum yield study of αα′-dichloro-(I) and αα′-diacyloxy-azoalkanes (II) without α-phenyl substituents as well as of (III) and (IV) showed that the various
研究了一系列带有α-苯基的αα'-二氯(III)和αα'-二酰氧基-偶氮烷(IV)的光化学。辐照(III)会产生两种N 2挤出产物(RN 2 R [图中省略] R·+ N 2 + R·),这是未取代的偶氮烷烃所熟知的产物,也是一种新反应,导致2Cl·的损失和酮嗪的形成。另外,在两种光反应中产生的自由基中间体都易发生氧化。脱氯:N 2的挤出比率随着取代的α-苯基的电子给体特性的增加而增加。另一方面,(IV)的辐射仅产生N 2挤压。不含α-苯基取代基的αα'-二氯-(I)和αα'-二酰氧基-偶氮烷(II)以及(III)和(IV)的敏化和量子产率研究表明,该系列的各种光反应在进行仅在单线态敏化下。讨论了这些反应的光化学机理。