Structure, spectra, photochemistry, and thermal reactions of the 4a, 4b-dihydrophenanthrenes

KA Muszkat, E Fischer

Index: Muszkat,K.A.; Fischer,E. Journal of the Chemical Society [Section] B: Physical Organic, 1967 , p. 662 - 678

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Citation Number: 100

Abstract

Ultraviolet irradiation of solutions of stilbene and its derivatives gives mixtures of their respective cis and trans isomers, together with, in many cases, 4a, 4b-dihydrophenanthrene, or its corresponding derivatives. The extent of the photocyclisation depends strongly on the wavelength of the light used for irradiation. In the photostationary state in stilbene, the maximum photocyclisation (21%) is attained by irradiation at 280 mµ. In ...

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