Concepedia

Amberlite IRA-400 (OH<sup>−</sup>) as a Catalyst in the Preparation of 4<i>H</i>-Benzo[<i>b</i>]pyrans in Aqueous Media

Mohammad Mehdi Khodaei, Kiumars Bahrami, Azita Farrokhi

Synthetic Communications · 2010 · 42 citations · 16 references

DOI

Concepts

Abstract

A quaternary ammonium hydroxide–type of anion exchange resin (Amberlite IRA-400) was found to be an effective and reusable catalyst for the synthesis of various 4H-benzo[b]pyran derivatives via a one-pot, three-component condensation in aqueous media. Short reaction time, easy and quick isolation of the products, environmentally friendly procedure, excellent chemoselectivity, and excellent yields are the main advantages of this procedure.

References

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