Highly efficacious preparation of 3,3′-(arylmethylene)-bis(2-hydroxynaphthoquinone) derivatives catalyzed by a nanorod-structured organic–inorganic hybrid material

A novel nanomaterial was prepared via grafting an organic moiety containing 4,4′-bipyridine scaffold on rice husk-derived nano-silica (RH-SiO 2 ). The nanomaterial namely 1-(Si-pr)-[4,4′-bipyridine]-1,1ʹ-diium hydrogen sulfate grafted on RH-SiO 2 ( SPBHRS ) was characterized by FT-IR, XRD, EDX, FE-SEM and TGA analyses. Afterward, the synthesis of pyrano[2,3- d ]pyrimidine-2,4-diones and pyrano[2,3- d ]pyrimidine-4-one-2-thiones was performed through the one-pot multi-component reaction of aromatic aldehyde, malononitrile and barbituric acid (or 2-thiobarbituric acid) using SPBHRS as an efficient and recyclable catalyst. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s11164-023-05021-7.

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Preparation of a novel nanocatalyst based on rice husk-derived nano-silica and its application for the synthesis of pyrano[2,3-d]pyrimidine-2,4-diones and pyrano[2,3-d]pyrimidine-4-one-2-thiones

Zare

Izadi

2023

Res Chem Intermed

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Highly efficacious preparation of 3,3′-(arylmethylene)-bis(2-hydroxynaphthoquinone) derivatives catalyzed by a nanorod-structured organic–inorganic hybrid material

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Preparation of a novel nanocatalyst based on rice husk-derived nano-silica and its application for the synthesis of pyrano[2,3-d]pyrimidine-2,4-diones and pyrano[2,3-d]pyrimidine-4-one-2-thiones

Preparation of a novel nanocatalyst based on rice husk-derived nano-silica and its application for the synthesis of pyrano[2,3-d]pyrimidine-2,4-diones and pyrano[2,3-d]pyrimidine-4-one-2-thiones

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