discusses the N-heterocyclic carbene (NHC)-catalyzed redox monoacylation of 1,n-lineardiols using α-benzoyloxyaldehydes. The reactions afforded monoacylated diols in moderate to good selectivities and chemical yields. Our original NHC bearing a pyridine moiety plays an important role in achieving good chemoselectivities. A wide range of 1,n-lineardiols were successfully applied to this reaction.
Zincperchloratehexahydrate, Zn(ClO4)2⋅6H2O, efficientlycatalyses the esterification between nearly equimolar amounts of carboxylicacids and alcohols. The reaction works under solvent-free conditions at relatively low temperatures. Excellent results were obtained with a wide range of substrates.