Tetrahedron

Organic photochemistry—II: Photochemical reaction of 5-phenyltropolone and its methyl ether

T Mukai, T Miyashi

Index: Mukai,T.; Miyashi,T. Tetrahedron, 1967 , vol. 23, p. 1613 - 1620

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Citation Number: 9

Abstract

Photochemistry of 5-phenyltropolone methyl ether (I) has been compared with that of colchicine and isocolchicine. Irradiation of I in methanol using high pressure mercury lamp afforded 3-methoxy-6-phenyl-Δ3, 6-bicyclo [3.2. 0] heptadiene-2-one (II). This is the first example giving type C photo-valence isomerization in the photo-reaction of a simple troponoid system. Photochemistry of 5-phenyltropolone (IX) was also studied, where both ...

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