Silver-Catalyzed [3+3] Annulation of Glycine Imino Esters with Seyferth–Gilbert Reagent To Access Tetrahydro-1,2,4-triazinecarboxylate Esters
作者:Chi Wai Cheung、Jun-An Ma、Yin-Jun Huang、Jing Nie
DOI:10.1055/s-0039-1690894
日期:2020.7
A silver-catalyzed protocol for [3+3] annulation of glycine imino esters with Seyferth–Gilbert reagent was developed. A variety of phosphorylated tetrahydro-1,2,4-triazinecarboxylate esters were synthesized in moderate to good yields and with excellent diastereoselectivities. The dehydrogenation of a tetrahydro-1,2,4-triazine product to the corresponding triazine counterpart was also demonstrated.
开发了一种用 Seyferth-Gilbert 试剂[3+3] 环化甘氨酸亚氨基酯的银催化方案。多种磷酸化四氢-1,2,4-三嗪羧酸酯以中等至良好的产率合成,并具有优异的非对映选择性。还证明了四氢-1,2,4-三嗪产物脱氢为相应的三嗪对应物。