Topochemical double photocyclodimerization of the 1, 4-dicinnamoylbenzene crystal

…, T Mori, H Uno, M Nohara, H Nakanishi

Index: Hasegawa, Masaki; Saigo, Kazuhiko; Mori, Toru; Uno, Hirofuni; Nohara, Masao; Nakanishi, Hachiro Journal of the American Chemical Society, 1985 , vol. 107, # 9 p. 2788 - 2793

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Citation Number: 49

Abstract

Abstract: The 1, 4-dicinnaomoyIbenzene crystal (1) dimerizes on photoirradiation into 21, 22, 23, 24-tetraphenyI- 1, 4, 11, 14-tetraoxo-2 (3), 12 (13)-diethano [4.4] paracyclophane (3) in an extremely high yield through the intermediate dimer 2 by “double” cyclodimerization with a small amount of the oligomers 4. The paracyclophane 3 has a tricyclic structure with two &type cyclobutane rings for which the configuration was determined on the basis of the ...