Photodehydrocyclizations of stilbene??like compounds XIV Photosynthesis and photoreactions of 1, 2??and 1, 14??diphenylpentahelicene derivatives

WH Laarhoven, PGF Boumans

Index: Laarhoven,W.H.; Boumans,P.G.F. Recueil des Travaux Chimiques des Pays-Bas, 1975 , vol. 94, p. 114 - 118

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Citation Number: 12

Abstract

Abstract Two polycyclic aromatics having a phenyl-substituted pentahelicene moiety, 13, 14- diphenyldibenzo [c, g] chrysene (19) and 14, 15-diphenyldibenzo [f, j] picene (38) have been obtained by irradiation of the appropriate diarylethylenes (13 and 18). Further irradiation of 19 in benzene yields mainly dibenzo [a, g] coronene (21) by cyclodehydrogenation with simultaneous loss of a phenyl substituent. The side products of this reaction are probably ...