Journal of Photosciences

Photochemical Cleavage of Dibenzoylmethane and Curcumin in the Presence of N,N-Dimethylaniline in Methanol

Volume 11(2004), 129-132 page

저자: Sung Sik Kim, Yoon Jung Mah, Ae Rhan Kim, and Kyung Won Cho

   11-3-129.pdf (128.7K)

Keywords: 1,3-diketone  dibenzoylmethane  curcumin  N,N-dimethylaniline  photochemical cleavage


Photochemically stable dibenzoylmethane and curcumin were cleaved dramatically when they were irradiated in the presence of N,N-dimethylaniline in methanol with 300 nm UV light. Several products such as benzil, secondary product derived from 1,4-diphenyl-1,4-butanedione, and unidentified compound were observed from the photoreactions of dibenzoylmethane with N,N-dimethylaniline. It was also found that one of the primary fragments produced by irradiation of curcumin in methanol were coupled with N,N-dimethylaniline to give a new enone compound, i.e., 1-(4-dimethylaminophenyl)-4-(4-hydroxy-3-methoxyphenyl)-but-3-en-2-one, as the major product.