Alkylation reactions of potassium carboxylates supported on alumina: comparison between ball-milling, impregnation and dispersion procedures

Abstract

Potassium carboxylate alkylation by n-bromooctane on neutral alumina in “dry media” under microwave irradiation was studied for different methods of preparation of salt–support powder. Mechanical milling and impregnation techniques led to equivalent yields, much higher than those obtained through dispersion. The first method avoids using solvents and subsequent drying of powders. Crystallographic and granulometric studies of the resulting powders were performed to ascertain the results.