PROCEDIMIENTO PARA LA OBTENCION DEL 4-HIDROZI-2-METIL-2H-1,2-BENZOTIAZINA-3-N-(2-PIRIDIL)CARBOXAMIDA-1,1-DIOXIDO.

摘要

The process comprises the addition reaction of compound of formula and magnesium 2-amidopyridyl iodide in ether solvent mixtures with xylene, at between 0 and 135 degrees C, in an inert atmosphere. Subsequent hydrolysis in basic medium is then carried out, on the intermediate compound thus obtained. - The hydrolysis temp. is the same as the previous reaction temp.