FIELD: organic chemistry. SUBSTANCE: glycoluril is used as reagent 1, acetic anhydride being used as reagent 2. Reaction is carried out by heating in the presence of perchloric acid till homogenization takes place, the process is followed by adding sodium acetate into reaction mixture and by boiling within 60-65 min. Molar ratio of glycoluril:acetic anhydride: perchloric acid: sodium acetate is 1:(6-8):(0.04-0.08):(0.8-1). Yield of desired product is 89 EFFECT: improves efficiency of method. 1 tbl
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