Title Silica-Supported LiHSO4 as a Highly Efficient, Heterogeneous and Reusable Catalytic System for the Solvent-Free Synthesis of β-Enaminones and β-Enamino Esters Type Article Keywords LiHSO4/SiO2, Solvent-free, β-Enaminone, β-Enamino ester, β-Dicarbonyl compound, Green chemistry Abstract A highly efficient, simple and green procedure for the synthesis of β-enaminones and β-enamino esters is described. The reaction of aromatic and aliphatic amines with β-dicarbonyl compounds using catalytic amount of silica-supported LiHSO4 (LiHSO4/SiO2) under solvent-free conditions at 80 °C affords the title compounds in high to excellent yields and in short reaction times. Researchers A. Hasaninejad (First researcher) , Abdolkarim Zare (Second researcher) , Mohammad Reza Mohammadizadeh (Third researcher) , Mohsen Shekouhy (Fourth researcher)