4,5-Dihydroxyimidazolidin-2-ones in α-ureidoalkylation of N-carboxy-, N-hydroxy-, and N-aminoalkylureas 2. α-Ureidoalkylation of N-(hydroxyalkyl)ureas
作者:A. N. Kravchenko、A. S. Sigachev、P. A. Belyakov、M. M. Ilyin、K. A. Lyssenko、V. A. Davankov、O. V. Lebedev、N. N. Makhova、V. A. Tartakovsky
DOI:10.1007/s11172-009-0165-5
日期:2009.6
The α-ureidoalkylation of N-(hydroxyalkyl)ureas (ureido alcohols) with 1,3-H2- and 1,3-Me2-4,5-dihydroxyimidazolidin-2-ones was systematically studied. The yields of glycolurils decrease both in going from 1,3-H2- to 1,3-Me2-4,5-dihydroxyimidazolidin-2-one and with increasing length (or with branching) of the hydroxyalkyl chain in ureido alcohols. The optimal reaction time for ureido alcohols is 1 h. The X-ray diffraction study showed that 2-(2-hydroxy-1,1-dimethylethyl)glycoluril crystallizes as a conglomerate. The enantiomeric analysis of 2-(2-hydroxyethyl)glycoluril was carried out by chiral-phase HPLC.
系统研究了 N-(羟基烷基)脲(脲醇)与 1,3-H2- 和 1,3-Me2-4,5- 二羟基咪唑烷-2-酮的 α-ureido 烷基化反应。从 1,3-H2- 到 1,3-Me2-4,5-二羟基咪唑烷-2-酮的过程中,以及随着脲基乙醇中羟基烷基链长度(或分支)的增加,糖醛酸的产量都会降低。X 射线衍射研究表明,2-(2-羟基-1,1-二甲基乙基)甘氨酰脲结晶为团聚体。采用手性相高效液相色谱法对 2-(2-羟乙基)甘氨酰脲进行了对映体分析。