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18Reaction of 4,5-dihydroxy-2-imidazolidinones with arylsulfinic acids. Synthesis of 4-arylsulfonyl-2-imidazolinones, Chemistry of Heterocyclic Compounds Synthesis of 4,5-bifunctionally substituted imidazolidin-2-ones, Chemistry of Heterocyclic Compounds Chemistry of bicyclic ureas. 5. Synthesis of 2,4,6,8-tetraazabicyclo[3.3.0]-3-octanone-7-thiones, Bulletin of the Academy of Sciences of the USSR, Division of chemical science Reactions of sulfonamides with 4,5-dihydroxyimidazolidin-2-ones, Russian Chemical Bulletin 4,5-Dihydroxyimidazolidin-2-ones in the reaction of ??-ureidoalkylation of N-(carboxyalkyl)-, N-(hydroxyalkyl)-, and N-(aminoalkyl)ureas, Russian Chemical Bulletin 4,5-Dihydroxyimidazolidin-2-ones in ??-ureidoalkylation of N-carboxyalkyl-, N-hydroxyalkyl-, and N-aminoalkylureas 5. Synthesis of N-hydroxyalkyl-1,5-diphenylglycolurils, Russian Chemical Bulletin 4,5-Dihydroxyimidazolidin-2-ones in an ??-ureidoalkylation reaction of N-(carboxyalkyl)-, N-(hydroxyalkyl)-, and N-(aminoalkyl)ureas 3. ??-Ureidoalkylation of N-[2-(dimethylamino)ethyl]urea, Russian Chemical Bulletin ??-Ureidoalkylation of thiosemicarbazide and aminoguanidine, Russian Chemical Bulletin 4,5-Dihydroxyimidazolidin-2-ones in ??-ureidoalkylation of N-carboxyalkyl-, N-hydroxyalkyl-, and N-(aminoalkyl)ureas 4.* ??-Ureidoalkylation of N-(2-acetylaminoethyl)ureas, Russian Chemical Bulletin Two-step ??-ureidoalkylation of ureas with 4,5-dihydroxyimidazolidin-2-ones, Russian Chemical Bulletin