利用以DMSO- d 6为氘源的碱催化,开发了一种高效便捷的氘标记的1,2,3-三唑。通过预先合成的原始1,2,3-三唑的氢-氘交换反应,可以制得一系列带有各种取代基的氘代1,2,3-三唑,具有很高的氘化率和高收率。催化系统已成功扩展到碘官能化的1,2,3-三唑基衍生物的脱卤和卤素-氘交换过程。这项研究为未来开发含1,2,3-三唑基的有机衍生物,聚合物材料和生物医学分子奠定了有希望的基础。
This disclosure relates to a method that involves reacting an azide with an alkyne in the presence of deuterated water and a copper-containing catalyst, thereby forming a deuterated 1,2,3-triazole.
The copper-catalyzed azide alkyne cycloaddition (CuAAC) is a highly effective method for the selective incorporation of deuterium atom into the C-5 position of the 1,2,3-triazole structure. Reactions of alkynes and azides can be conveniently carried out in a biphasic medium of CH2Cl2/D2O, using the CuSO4/Na ascorbate system. The mildness of the method renders it applicable to substrates of relatively high complexity, such as nucleosides. Good yields and high levels of deuterium incorporation were observed. A reaction conducted in equimolar H2O and D2O showed 2.7 times greater incorporation of hydrogen atom as compared to deuterium. This is consistent with the H+ and D+ ion concentrations in H2O and D2O, respectively. With appropriately deuterated precursors, partially to fully deuterated triazoles were assembled where the final deuterium atom was incorporated in the triazole-forming step.
[EN] METHODS FOR PREPARING DEUTERATED 1,2,3-TRIAZOLES<br/>[FR] PROCÉDÉS DE PRÉPARATION DE 1,2,3-TRIAZOLES DEUTÉRIÉS
申请人:UNIV CITY NEW YORK RES FOUND
公开号:WO2012135112A2
公开(公告)日:2012-10-04
This disclosure relates to a method that involves reacting an azide with an alkyne in the presence of deuterated water and a copper-containing catalyst, thereby forming a deuterated 1,2,3-triazole.