T. Sugiyama, Toshikazu Furihata, K. Takagi
Dec 1, 1981
Citations
0
Influential Citations
8
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
UV-irradiation of methyl 2-pyridinecarboxylate in methanol in the absence of added acid brings about methylation at the 5-position via the excitation of C=O of the ester group, while in the presence of added acid the 4-position of the pyridine ring is methylated. In the presence of sulfuric acid methoxylation via an excimer is dominant over methylation. In the presence of hydrochloric acid methylation via chlorine atoms becomes dominant.