Photochemistry of Substituted 4, 4??Dimethoxy??2, 5??Cyclohexadienones

FT Hong, KS Lee, YF Tsai…

Index: Hong, Fang-Tsao; Lee, Kung-Shing; Tsai, Yow-Fu; Liao, Chun-Chen Journal of the Chinese Chemical Society, 1998 , vol. 45, # 1 p. 1 - 12

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Citation Number: 5

Abstract

Abstract 4, 4-Dimethoxy-2, 5-cyclohexadienones 9–14 were prepared from the corresponding hydroquinone monomethyl ethers by oxidation with thallium trinitrate in methanol. Irradiation of solutions of 9–13 in methanol with a broad band of UV light centered at 350 nm in a Rayonet reactor afforded 2-cyclopentenone derivatives 15–19 in moderate to excellent yields, whereas irradiation of 14 in methanol gave phenol 8 along with other ...