Cycloreversion of Aryl-Substituted Cyclobutene by Direct Photolysis and Pulse Radiolysis.
K Nakabayashi, Y Tahara, M Yasuda, K Shima…
Index: Nakabayashi, Kenichi; Tahara, Yasuhisa; Yasuda, Masahide; Shima, Kensuke; Takamuku, Setsuo Bulletin of the Chemical Society of Japan, 1993 , vol. 66, # 3 p. 698 - 702
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Citation Number: 2
Abstract
The cycloreversion of 1, 5-diphenylbicyclo [3.2. 0] hept-6-ene (1) to 1, 4-diphenyl-1, 3- cycloheptadiene (2) has been studied by direct photolysis and radiolysis. The γ-radiolysis of 1 in benzene gave 2 quantitatively up to a stationary state where the ratio of 1 to 2 is 0: 100. However, no isomerization of 2 to 1 occurred. The triplet state of 2 (λ max= 380—385 nm; τ= 2.7—2.8 μs) was formed by pulse radiolysis of 1 in benzene. It has been found that ...
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