Characterization and Application of SO۳H-functionalized Phthalimide (SFP) as an Efficient and Recyclable Catalyst for the Solvent-free Synthesis of ۲-Amino-۴H-chromenes

In this research, SO۳H-functionalizedphthalimide (SFP) has been prepared through simple reaction of phthalimide with chlorosulfonic acid, and characterized using FT-IR, ۱H NMR, ۱۳C NMR, SEM (scanning electron microscopy), mass and TG (thermal gravimetric) spectra. Afterward, the solid acid has been utilized as an efficient, green, heterogeneous and recyclable catalyst for the solvent-free synthesis of ۲-amino-۴H-chromenes by the one-pot multi-component reaction of aromatic aldehydes with malononitrile and ۱-naphthol under thermal (۷۰ °C) and microwave (۵۴۰ W) conditions.

کلیدواژه ها:

SO۳H-functionalized phthalimide (SFP) ، SO۳H-containing solid acid ، ۲-Amino-۴H-chromenes ، Solvent-free ، Microwave