A rubrene problem. Reaction of 3, 3, 4, 4-tetrabromo-1, 2-bis (diphenylmethylene) cyclobutane and dichloroacetic acid.

F Toda, M Sasaoka, Y Todo, K Iida, T Hino…

Index: Toda, Fumio; Sasaoka, Michio; Todo, Yozo; Iida, Kunio; Hino, Toru; et al. Bulletin of the Chemical Society of Japan, 1983 , vol. 56, # 11 p. 3314 - 3318

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Citation Number: 8

Abstract

Heating of 3, 3, 4, 4-tetrabromo-1, 2-bis (diphenylmethylene) cyclobutane in dichloroacetic acid afforded bridgehead olefin, 7-bromo-1, 4, 8-triphenyl-2, 3-benzobicyclo [3.3. 0] octa-2, 4, 7-trien-6-one, and spiroketone, 2-bromo-2′, 3-diphenylspiro [1H-indene-1, 1′(4′ H)- naphthalen]-4′-one (13). Mechanism of the reaction was discussed. X-Ray structural study of the spiroketone 13 was also reported.