Abstract A practical synthesis of β-carbonyl phenyltetrazolesulfones, useful for a series of enantioselective reactions, is shown. Aryl, alkyl and ester carbonyl compounds all proved to be efficiently synthesised, leading to products in up to> 99% yield over two steps. During this procedure, no special attention to conditions or laborious purification by chromatography is needed. Furthermore, X-ray crystallography, kinetic studies, as well as NMR and IR ...