Bentonite-titana Composite as an Efficient, Eco-friendly and Non-toxic Catalyst for Synthesis of Benzopyran Derivatives Under Heating and Solvent-free Conditions

Title:Bentonite-titana Composite as an Efficient, Eco-friendly and Non-toxic Catalyst for Synthesis of Benzopyran Derivatives Under Heating and Solvent-free Conditions

Volume: 12 Issue: 3

Author(s): Ali Darehkordi, Mohammad Sadegh Hosseini, Mirrasol Mosavi and Alireza Poorfreidoni

Affiliation:

Keywords: Bentonite-titana composite, benzopyran, dimedone, malonoitrile, barbituric acid, pyrano[2, 3-d]pyrimidine.

Abstract: Bentonite-titana composite was prepared and characterized by XRD, FT-IR and SEM. Results indicate that TiO₂ particles have been supported on the bentonite layers and a delaminated structure is formed. Then the bentonitetitana composite as a mild, eco-friendly, non-toxic an efficient heterogeneous catalyst have been used for synthesis of benzopyran derivatives from the three-component condensation reaction of dimedone or barbituric acid, malonoitrile, and aromatic aldehydes under solvent free conditions in good to excellent yield and short reaction times.

Cite this article as:

Darehkordi Ali, Hosseini Sadegh Mohammad, Mosavi Mirrasol and Poorfreidoni Alireza, Bentonite-titana Composite as an Efficient, Eco-friendly and Non-toxic Catalyst for Synthesis of Benzopyran Derivatives Under Heating and Solvent-free Conditions, Letters in Organic Chemistry 2015; 12 (3) . https://dx.doi.org/10.2174/1570178612666150108002202