FIELD: organic chemistry.
SUBSTANCE: invention relates to bicyclic 1,4-piridotiazine-1,1-dioxides of general formula I 
wherein R1 is chlorine or fluorine; R2 is linear or branched alkyl, cycloalkyl, optionally reduced aryl or heteroaryl, etc. Method for production of said compounds includes reaction of acyclic sulfones with primary alcohols, preferably in presence of inorganic or organic such as carbonates or alkali metal hydroxides tertiary organic amines or base mixtures, preferably in aprotic bipolar media without solvents, or mixture thereof with water.
EFFECT: safe method for production of new compounds useful as drugs.
2 cl, 2 ex
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