Abstract
The novel nano-cellulose-OSO3H prepared from the almond shell was synthesized via preparing mesoporous almond shell as an efficient support followed by treatment with chlorosulfonic acid (ClSO3H). This catalyst was characterized by FT-IR, FE-SEM, TEM, EDX, BET, TGA and XRD methods. Through SEM device, the size of the cellulose-OSO3H nanocatalyst revealed <30 nm. The catalytic activity of the solid acid catalyst has been successfully investigated in a one-pot three-component condensation reaction. In these procedures, aromatic aldehydes, α-naphthol and (phenylsulfonyl)acetonitrile were applied under solvent-free condition producing 2-amino-3-phenylsulfonyl-4-aryl-4H-benzo[h]chromen derivatives with high yields.
Disclosure statement
No potential conflict of interest was reported by the authors.