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The novel nano-cellulose-OSO 3 H prepared from the almond shell was synthesized via preparing mesoporous almond shell as an efficient support followed by treatment with chlorosulfonic acid (ClSO 3 H). This catalyst was characterized by FT-IR, FE-SEM, TEM, EDX, BET, TGA and XRD methods. Through SEM device, the size of the cellulose-OSO 3 H nanocatalyst revealed &lt;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-4 H -benzo[ h ]chromen derivatives with high yields.

polycyclic aromatic compounds

Preparation and Characterization of Novel Nano-cellulose-OSO 3 H Prepared from the Almond Shell as a Catalyst and Its Application in Synthesis of 2-Amino-3-Phenylsulfonyl-4-Aryl-4 H -Benzo[ h ]Chromen Derivatives