The cesium salt of tungstophosphoric heteropoly acid, Cs2.5H0.5PW12O40, is an active and environmentally
friendly heterogeneous catalyst for the liquid-phase acetylation of nopol and several biomass-derived
terpenic alcohols (i.e., a-terpineol, nerol, geraniol, linalool, menthol, isoborneol, perillyl alcohol, carveol,
isopulegol, carvacrol and nerolidol) with acetic anhydride. The resulting flavor and fragrance acetic
esters, which are widely used in perfumery, household and food products, are obtained in good to
excellent yields. The reactions occur at room temperature with low catalyst loadings without substantial
catalyst leaching and can be performed with stoichiometric amounts of an acetylating agent in solvent
free systems