Ag<sub>2</sub>CO<sub>3</sub>-Catalyzed H/D Exchange of Five-Membered Heteroarenes at Ambient Temperature
作者:En-Ci Li、Guang-Qi Hu、Yu-Xing Zhu、Hong-Hai Zhang、Kang Shen、Xiao-Chun Hang、Cong Zhang、Wei Huang
DOI:10.1021/acs.orglett.9b02369
日期:2019.9.6
Ag2CO3-catalyzed hydrogen isotope exchange of five-membered heteroarenes is disclosed. The reaction can be conducted in the open air, at ambient temperature, and with D2O as deuterium source. Moreover, this protocol showed orthogonal site selectivity to existing technology, thereby greatly expanding the scope of substrates for HIE reaction. The mechanistic study indicated that the carbonate group plays
公开了五元杂芳烃的Ag 2 CO 3催化的氢同位素交换。该反应可以在露天,环境温度下进行,并且以D 2 O作为氘源。而且,该方案显示出对现有技术的正交位点选择性,从而大大扩展了用于HIE反应的底物的范围。机理研究表明,碳酸酯基团通过降低H / D交换过程的活化能,对于实现高水平的氘掺入起着至关重要的作用。