Synthesis and crystal structures of novel glycoluril carboxylic acids conglomerates |
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| Institution: | 1. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation;2. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russian Federation;3. D. I. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russian Federation |
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| Abstract: | The two novel conglomerates were obtained by crystallization of racemic (2'S,3aS,6aR)/(2'R,3aR,6aS) (glycoluril-1-yl)-3-methylbutanoic acid and (2'R,3aR,6aR)/(2'S,3aS,6aS) (4,6-dimethylglycoluril-1-yl)pentanoic acid synthesized by highly diastereoselective condensation of 4,5-dihydroxy- imidazolidin-2-ones with racemic ureido acids. The differences in the molecular geometry of synthesized racemates were studied by X-ray diffraction that showed them to crystallize as conglomerates in non-centrosymmetric space groups Pna21 and P212121, respectively |
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| Keywords: | conglomerats glycolurils carboxylic acids racemates ureido acids 45-dihydroxyimidazolidin-2-ones crystallization crystal structures |
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