Direct synthesis of amides from amines using mesoporous Mn-SBA-12 and Mn-SBA-16 catalysts

•Direct hydrothermal synthesis of three-dimensional, mesoporous Mn-SBA-12/-16•Catalytic application of Mn-SBA-12 and Mn-SBA-16 for amides synthesis•Direct aerial oxidation of primary amines to amides•Highly active mesoporous Mn catalysts

Manganese incorporated SBA-12 and SBA-16 catalyze the tandem reaction of aliphatic primary amine, aerial oxygen and ammonia solution at moderate conditions producing amide in yields as high as 50 mol%. The Mn-SBA-12 and Mn-SBA-16 catalysts with Si/Mn output molar ratio in the range 230 to 748 were prepared by the direct hydrothermal synthesis method and characterized. Weak acidity and Mn in + 3 oxidation state are the key factors enable the synthesis of product amide in high yields.

Graphical abstractManganese incorporated SBA-12 and SBA-16 catalyze a tandem reaction of aliphatic primary amine, aerial oxygen and ammonia solution at moderate conditions producing amide in yields as high as 50 mol%.Figure optionsDownload full-size imageDownload as PowerPoint slide