Journal of Photosciences

Photochemical Ring-Opening of Acid Anhydrides by TiO2 Photocatalyst in Methanol

Volume 10(2003), 241-243 page

ÀúÀÚ: Sung Sik Kim, Yoon Jung Mah, Hye Jong Lee, and Sang Kyu Park

   10-3-241.pdf (50.4K)

Keywords: TiO2  succinic anhydride  phthalic anhydride  maleic anhydride  photoreacton


Photoreactions of some carbonyl compounds with TiO2 were investigated in methanol. Although 1,3-cyclohexanedione and phthalimide afforded 3-methoxy-2-cyclohexen-1-one and 3-methoxy-1-isoindolinone, respectively, acid anhydrides such as succinic, phthalic, and maleic anhydrides gave the monoesters of dicarboxylic acids in good to excellent yields, when they were irradiated on TiO2 in methanol with 300 nm UV light.