FIELD: chemistry.
SUBSTANCE: invention relates to the method of producing a compound of the formula 
, where R1 is C1-6alkyl, aryl, or benzyl, and Y is a leaving group, which includes: a) the interaction of the compound of the formula 
with 2-chloroethanol in the presence of a suitable base; and b) the conversion of the product obtained in step (a) into the compound of the formula (V) using a reagent selected from the group consisting of thionyl chloride, sulphonylchloride such as sulphonylchlorides, sulfonyl anhydrides, and halides of phosphorus.
EFFECT: improved method.
7 cl, 8 dwg, 1 tbl, 10 ex
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