Highly Efficient, Reusable, Functionalized Pyridinium Salts as a Catalyst
for the Simple and Cost-effective Preparation of Tetrahydro [b] Benzopyran
Derivatives

Saida      Benzerka; Mohamed   Abdenour   Redouane; Naima      Khiri-Meribout; Abdelmadjid      Debache

Current Organocatalysis

Author(s): Saida Benzerka, Mohamed Abdenour Redouane, Naima Khiri-Meribout* and Abdelmadjid Debache

DOI: 10.2174/2213337209666220217112937

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Highly Efficient, Reusable, Functionalized Pyridinium Salts as a Catalyst for the Simple and Cost-effective Preparation of Tetrahydro [b] Benzopyran Derivatives

Page: [252 - 261] Pages: 10

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Abstract

Background: In this work, a series of pyridinium-based ionic liquids (PBILs) were synthesized.

Methods: Pyridinium-based ionic liquids (PBILs) were synthesized through a simple method, which were initially evaluated as catalysts for the synthesis of tetrahydro[b]benzopyran derivatives via a one-pot three-component reaction involving aldehydes, malononitrile, and dimedone.

Results: The PBILs perform well in this condensation reaction, especially 1-methylpyridin-1-ium dimethyl phosphate (MPDMP).

Conclusion: The advantages of this procedure are good yields, short reaction time, simplicity of implementation, and inexpensive starting materials.

Keywords: Multicomponent reaction, one-pot synthesis, tetrahydrobenzo [b] pyrans, pyridinium salts, ionic liquids, derivatives.

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