Photochemical preparation of o-xylylene from 1,3-dihydrophthalazine in rigid glass
Photochemical preparation of o-xylylene from 1,3-dihydrophthalazine in rigid glass
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硬质玻璃中1,3-二氢酞嗪光化学制备邻二甲苯
DOI：
10.1021/ja00798a081
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发表时间：
1973
影响因子：
15
通讯作者：
J. Michl
中科院分区：
文献类型：
--
作者：
C. Flynn;J. Michl
Na 8 9 中间体已从捕获 8-10 或自捕获反应的产物的性质推断出来。后者产生2、3、4和邻二甲苯。可能通过 1 进行的一些反应是 5 在 0 (5-* 6-» 1) 处的氧化 11、79·10·12 和 8、13 的热分解以及 9 的紫外线照射 14。我们对 1 的兴趣是由有关碳氢化合物 15 的工作以及双自由基的电子态和光化学单线态-三线态反应性差异的研究引起的。 16 这促使我们寻找最低激发单线态 (Si) 和三线态 (Ti) 具有相同轨道占据的双自由基；然而，Si 可能更喜欢“紧密”的几何形状，而 Ti 更喜欢“松散”的几何形状。 16
Na 8 9 intermediate has been inferred from the nature of the products of trapping8-10 or self-trapping reactions. The latter give 2, 3, 4, and o-xylene. Some reactions which presumably proceedvia 1 are oxidation11 of 5 at 0 (5-* 6-» 1), thermal decompositions of 79· 10· 12 and8, 13 and uv irradiation14 of 9.Our interest in 1 was aroused by work on related hydrocarbons15 and by studies of the electronic states of biradicals and of photochemical singlet-triplet reac-tivity differences. 16 This prompted us to search for biradicals whose lowest excited singlet (Si) and triplet (Ti) states would have the same orbital occupancy; yet, Si could be shown to prefer a “tight” geometry and Ti a “loose” one. 16