@article{oai:omu.repo.nii.ac.jp:00009536, author = {ICHIMOTO, Itsuo and MIYAGAWA, Kinjiro and TATSUMI, Chuji}, journal = {Bulletin of the University of Osaka Prefecture. Ser. B, Agriculture and biology}, month = {Mar}, note = {application/pdf, New methods of preparation of halogen derivatives; 6-bromo, 6-iodo and 2-bromomethyl kojic acid was established. Kojyloxyacetic acid and its derivatives were also obtained. Mannich reaction of kojic acid with aliphatic amine was investigated, furthermore, it was [figure] found that kojic acid may react with acetoacetic ethyl ester under the condition of Pechman ring close reaction using sulfuric acid as a catalyst. By oxidation with nitric acid, methyl comenic acid was obtained at 0°, while kojic acid was cleaved to oxalic acid. Some of thio-pyrone derivatives were also synthesized., Bulletin of the University of Osaka Prefecture. Ser. B, Agriculture and biology. 1964, 15, p.61-66}, pages = {61--66}, title = {Studies on Kojic Acid Derivatives : Part 4. Some Reactions of Kojic Acid}, volume = {15}, year = {1964} }