<p>In this research, the preparation of new benzochromene derivatives was synthesized in a three-component reaction using 1-naphthol and 2-naphthol, methylsulfonylacetonitrile and malononitrile, and aldehyde derivatives in the presence of triethylamine as catalyst, 2-hydroxyethylammonium formate as ionic liquid catalyst, and Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@[O-(CH<sub>2</sub>)<sub>2</sub>-NH<sub>2</sub>][HCO<sub>2</sub>H] as nanocatalyst. The advantages of this protocol include high yields, green chemistry, short reaction times, and catalyst recycling.</p>

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Preparation of new benzochromene derivatives using triethylamine, 2-hydroxyethylammonium formate, and Fe3O4@SiO2@[O-(CH2)2-NH2][HCO2H] as catalysts

  • Fahimeh Abbaszadeh-Mahmoudi,
  • Farhad Shirzaei,
  • Hamid Reza Shaterian

摘要

In this research, the preparation of new benzochromene derivatives was synthesized in a three-component reaction using 1-naphthol and 2-naphthol, methylsulfonylacetonitrile and malononitrile, and aldehyde derivatives in the presence of triethylamine as catalyst, 2-hydroxyethylammonium formate as ionic liquid catalyst, and Fe3O4@SiO2@[O-(CH2)2-NH2][HCO2H] as nanocatalyst. The advantages of this protocol include high yields, green chemistry, short reaction times, and catalyst recycling.