Photodehydrocyclizations in stilbene-like compounds. X. Rearrangements in the photocyclization of 4, 5-diphenyltriphenylene and 4, 5-diphenylphenanthrene

AHA Tinnemans, WH Laarhoven

Index: Tinnemans,A.H.A.; Laarhoven,W.H. Journal of the American Chemical Society, 1974 , vol. 96, # 14 p. 4617 - 4622

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Citation Number: 25

Abstract

Abstract: Photodehydrocyclizations of 4, 5-diphenyltriphenylene (I) and 4, 5- diphenylphenanthrene (11) are accompanied with a similar 1, 2-phenyl shift as previously found in the photocyclization of 1-phenylpentahelicene. I gives 1-phenyldibenzo [e,[lpyrene (IIIa) and tribenzo [e, ghi, k] perylene (IV); the photoproducts of I1 are l-phenylbenzo [e] pyrene (XVIIa) and dibenzo [e, ghi] perylene (XVIII). From I, however, a third photoproduct, ...