Sulfonic Acid Functionalized Nano Γ-Al2O3: a New, Efficient, and Reusable Catalyst for Synthesis of Thioamides

Sulfonic acid functionalized nano γ-Al2O3 is easily prepared by the reaction of nano γ-Al2O3 with 1,3-propane sulfone. This reagent can be used as an eficient catalyst for the synthesis of thioamides. This new method consistently has the advantages of excellent yields and short reaction times. Further, the catalyst can be recovered for several times.