Polyfunctional Derivatives of Isocytosine. Effect of Hydration on Prototropic Tautomerism of 2-(2-Hydroxyethyl)amino-6-methylpyrimidin-4(3H)-one
作者:A. V. Erkin、V. I. Krutikov
DOI:10.1007/s11176-005-0287-x
日期:2005.4
Hydration of 2-(2-hydroxyethyl)amino-6-methylpyrimidin-4(3 H )-one forms an equilibrium mixture of 4-oxo-3,4-dihydro and 4-hydroxy tautomers. The intermediate in mutual transitions of these tautomers has a zwitter ionic structure. The equilibrium shifts to the 4-oxo-3,4-dihydro form as the polarity of the medium decreases.
2-(2-羟乙基)氨基-6-甲基嘧啶-4( 3H )-的水合 形成4-氧代-3,4-二氢和4-羟基互变异构体的平衡混合物。这些互变异构体相互过渡的中间体具有两性离子结构。随着介质极性的降低,平衡转变为4-氧代-3,4-二氢形式。