Adaptação de forno de microondas doméstico para realização de reações de transesterificação sob refluxo e catálise por argilas

Abstract

Recebido em 7/3/05; aceito em 22/7/05; publicado na web em 20/1/06 ADAPTING A DOMESTIC MICROWAVE OVEN TRANSESTERIFICATION REACTIONS FOR UNDER REFLUX AND CLAY CATALYSIS. The microwave oven became an important source of heating for many laboratory procedures including accelerating organic reactions. Reactions that require long reflux times can sometimes be carried out in a few hours or minutes in a conventional microwave oven. However, longer reflux times can be troublesome since domestic microwave ovens are not prepared for these harsh conditions. This technical note presents our finding on heterogeneous catalysis transesterification reactions between b-keto-esters and carbohydrate derivatives under heating or microwave irradiation using an adapted domestic microwave oven.