AbstractGlycerol is one of the important biomass‐derived feedstocks and the high‐value utilizations of glycerol have attracted much attentions in recent years. Herein, we report a manganese catalyzed dehydrogenative coupling of glycerol with amines for the synthesis of substituted 2‐methylquinoxalines, 2‐ethylbenzimidazoles, and α‐aminoketones without any external oxidant. In these reactions, NHC‐based pincer manganese complex featuring a pyridine backbone displayed high catalytic activity and selectivity, in which hydrogen and water were produced as the only by‐products using glycerol as a C3 synthon.
摘要甘油是重要的生物质原料之一,近年来甘油的高值化利用备受关注。在此,我们报告了一种锰催化的甘油与胺的脱氢偶联反应,该反应无需任何外部氧化剂即可合成取代的 2-甲基喹喔啉、2-乙基苯并咪唑和 α-氨基酮。在这些反应中,以吡啶为骨架的 NHC 型钳形锰络合物显示出很高的催化活性和选择性,以甘油为 C3 合成物产生的唯一副产物是氢和水。