Lewis acid catalyzed acylation reactions: scope and limitations

Iron (III) Phosphate as a Green and Reusable Catalyst Promoted Chemo Selective Acetylation of Alcohols and Phenols with Acetic Anhydride Under Solvent Free Conditions at Room Temperature

“…In fact, allyl, cinnamyl and propargyl alcohols were subjected as unsaturated alcohols. We would have expected to carry out hydration reaction on double and triple bond in acidic media beside acetylation reaction, so far hydrated products didn't observed at all (entries [16][17][18]. Heterocyclic furfuryl alcohol gives corresponding acetate with excellent yield (entries 26).…”

“…6 Commonly used reagent for this reaction uses acetic anhydride in the presence of an acid or base catalyst. 16 and Bi(OTf) 3 , 17 have been investigated to meet the demands for more efficient and selective methods. In spite of these waves of interest, due to the importance of acetylation, it is necessary to develop inexpensive, ecofriendly and reusable catalyst to promote acetylation process.…”

Al(HSO4)3Catalyzed Acetylation and Formylation of Alcohols

“…26,27 In conclusion, we have shown that Al(HSO 4 ) 3 is a good reagent for acetylation and formylation of a variety of alcohols under mild reaction conditions. The reactions are clean and the products yields are good to high and the procedure is easy.…”

Selective Acetylation of Small Biomolecules and Their Derivatives Catalyzed by Er(OTf)3

“…Regioselective acetylation is one of the strategies that chemists have tentatively developed, over time, in order to maximize the different reactivity of the primary hydroxyl groups in polyols and carbohydrates to be used as constituents of many biologically active compounds [1][2][3][4]. In the literature, several methods have been developed for the preparation of acetyl derivatives, using zeolites [5], various metal salts such as Mg(ClO 4 ) 2 and Zn(ClO 4 ) 2 .6H 2 O [6,7], and some triflate catalysts or stoichiometric reagents [8,9].…”