Studies in photochemistry. Part VII. The photocyclisation of some nuclear-substituted stilbenes to substituted phenanthrenes

EV Blackburn, CE Loader, CJ Timmons

Index: Blackburn,E.V. et al. Journal of the Chemical Society [Section] C: Organic, 1968 , p. 1576 - 1580

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Citation Number: 8

Abstract

Photocyclodehydrogenation of trans-9-styryl-1, 2, 3, 4, 5, 6, 7, 8-octahydroanthracene in cyclohexane solution formed a mixture of 11-butyl-and 11-but-3-enyl-1, 2, 3, 4- tetrahydrochrysene in very small yield, identified by their ir, uv, 1H nmr, and mass spectra. 2, 4, 6-Trimethylstilbene photocyclised to 1, 3-dimethylphenanthrene with the elimination of a methyl group. 3, 3′, 5, 5′-Tetramethylstilbene formed 2, 4, 5, 7- ...