Change of Orientation in Photoreaction by Oxygen. Effect of Oxygen on Photo-methoxylation of Dimethyl Esters of 2,4- and 3,4-Pyridinedicarboxylic Acid
作者:Toru Sugiyama、Mitsuharu Kanai、Setsuko Takenaka、Akira Sugimori
DOI:10.1246/bcsj.58.1331
日期:1985.4
The UV-irradiation of dimethyl 2,4- and 3,4-pyridinedicarboxylates in methanol in the presence of H2SO4 under O2 brings about methoxylation at the β- position of the pyridine ring, while under N2 methoxylation occurs at the α-position.
在O2存在下,将二甲基2,4-和3,4-吡啶二羧酸酯在甲醇中与H2SO4一起进行UV辐射,会导致吡啶环β位的甲氧基化,而在N2下,甲氧基化则发生在α位。