Fluoroboric acid adsorbed on silica-gel(HBF4·SiO2)has been found to be an extremely efficient and recyclable catalyst for the preparation ofβ-enaminones andβ-enamino esters under solvent-free conditions.
摘要Fluoroboric acid adsorbed on silica-gel(HBF4·SiO2)has been found to be an extremely efficient and recyclable catalyst for the preparation ofβ-enaminones andβ-enamino esters under solvent-free conditions.