p-Sulfonic acid calix[n]arenes as homogeneous and recyclable organocatalysts for esterification reactions |
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| Authors: | Sergio Antonio Fernandes Ricardo Natalino Poliana Aparecida Rodrigues Gazolla Márcio José da Silva Gulab Newandram Jham |
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| Institution: | Grupo de Química Supramolecular e Biomimética (GQSB), Departamento de Química, CCE, Universidade Federal de Viçosa, Viçosa, MG, Brazil |
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| Abstract: | Esterification yields were significantly improved using calixn]arenes catalysts under simple conditions. p-Sulfonic acid calix4]arene and p-sulfonic acid calix6]arene were powerful organocatalysts in several esterification reactions, which showed activity comparable or even superior to other well-established acids catalysts, such as, sulfuric acid, p-toluenesulfonic acid, and p-hydroxybezenesulfonic acid described in the literature. |
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