93114-94-4Relevant articles and documents
Photochemistry of Substituted 4,4-Dimethoxy-2,5-Cyclohexadienones
Hong, Fang-Tsao,Lee, Kung-Shing,Tsai, Yow-Fu,Liao, Chun-Chen
, p. 1 - 12 (2007/10/03)
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 unidentified products. Irradiation of 11-14 in benzene yielded substituted phenols. The plausible reaction pathways for the product formation are discussed.