2554-84-9Relevant articles and documents
Ortho Substituent Effect of the Side-Chain Phenyl Group on the Dehydrogenation of Flavanones with 2,3-Dichloro-5,6-dicyano-p-benzoquinone
Hoshino, Yukio,Takeno, Noboru
, p. 4468 - 4470 (2007/10/02)
Rates of the dehydrogenation of 2'-substituted flavanones with 2,3-dichloro-5,6-dicyano-p-benzoquinone were measured by means of HPLC analyses.All substituents at the ortho position of the side-chain phenyl group of flavanones showed a retarding effect on the reaction.A correlation analysis for the ortho effect using the linear combination model has led to a conclusion that the inductive effect is much more important than the steric and the resonance effect, and that the steric effect is slightly greater than the resonance effect.
Cyclodehydrogenation of 2'-Hydroxychalcones with DDQ: A Simple Route for Flavones and Aurones
Imafuku, Kimiaki,Honda, Masaaki,McOmie, J. F. W.
, p. 199 - 201 (2007/10/02)
The oxidation of 2'-hydroxychalcones with 2,3-dichloro-5,6-dicyano-p-benzoquinone provides a useful synthetic route for flavones and aurones.