異項双環化合物の研究 (第16報)

5-,7-Methoxy-2-methylbenzothiazoleの合成並びにHydroxybenzothiazole類の呈色反応

抄録

The structure of the two isomers, 5- and 7-methoxy-2-methylbenzothiazole, obtained by the alkaline ferricyanide oxidation of m-thioacetanisidide, was determined by comparative examination with 5-methoxy-2-methylbenzothiazole prepared from p-anisidine. Further, four kinds of hydroxy-2-methylbenzothiazole were prepared by the hydrolysis with hydriodic acid of four kinds of methoxy-2-methyl-benzothiazoles obtained to date, and it was found that it is possible to detect the hydroxyl in α-position of the benzothiazole ring by coloration, after submitting the four hydroxylated compounds to coloration by the Driver, ferric chloride, and ammoniac copper reactions.