abstract |
PROCEDURE TO OBTAIN HALOGEN-HYDROXY-FLAVONES. CONSISTS OF TREATING A COMPOUND OF FORMULA (II) WITH A DEHYDRATING AGENT (SELENIUM DIOXIDE OR HYDROGEN PEROXIDE), IN THE PRESENCE OF DIOXANE OR CHLOROFORM AND BETWEEN 0G AND 120GC, TO OBTAIN HALOGENOHIDROXY-FLAON-FLAON SULFURIC ACID AND PHOSPHORIC ACID. BEING: R, RENT FROM C 1 TO 3; X, HALOGEN; Y M, N Y P, OF 1, 2 O 3. IT IS USED IN THE TREATMENT OF THE HYPERFUNCTION OF THE THYROID GLANDS. *FORMULA* |