Process for preparing selenium-methylene blue, radioactive selenium methylene blue, its preparation and use in compounds for the delineation of epithelial adenoma corpuscles

摘要

1. Claims for the Contracting States : BE, CH, DE, FR, GB, IT, LI, NL, SE A process for the preparation of selenium methylene blue, which comprises reacting 3-bromo-N,N-dimethyl aniline in an anhydrous solvent with magnesium to yield 3-dimethylaminophenyl magnesium bromide, adding selenium to obtain 3-dimethyl-aminophenyl selenomagnesium bromide, hydrolyzing said compound by means of aqueous mineral acid to yield 3-dimethylamino-selenophenol, converting said compound by oxidation into bis-(3-dimethylaminophenyl)-diselenide and reacting said compound with 4-nitroso-N,N-dimethyl aniline or one of its salts in an aqueous solvent. 1. Claims for the Contracting State : AT A process for the preparation of selenium methylene blue, which comprises reacting 3-bromo-N,N-dimethyl aniline in an anhydrous solvent with magnesium to yield 3-dimethylaminophenyl magnesium bromide, adding selenium to obtain 3-dimethyl-aminophenyl selenomagnesium bromide, hydrolyzing said compound by means of aqueous mineral acid to yield 3-dimethylamino-selenophenol, converting said compound by oxidation into bis-(3-dimethylaminophenyl)-diselenide and reacting said compound with 4-nitroso-N,N-dimethyl aniline or one of its salts in an aqueous solvent.