Periodic mesoporous silica chloride (PMSCl) as an efficient and recyclable catalyst for the Pechmann reaction

Periodic mesoporous silica chloride (PMSCl) with 2D P6mm hexagonal structure which can be prepared by a simple procedure is reported to act as an efficient and recyclable catalyst for the conversion of a variety of phenols into their corresponding coumarins through Pechmann reaction. The reactions were conducted under solvent-free conditions in good to excellent yields.

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► Synthesis of ordered mesoporous silica chlorides with 2D P6mm hexagonal structure.
► SBA-15-Cls as efficient catalyst for the von Pechmann reaction.
► High stability and moderate reusabilities.