Determine which anomer of the pentaacetate was formed in the reaction. When the pentaacetate anomer obtained in this reaction is heated with Z_nCI_2 and acetic anhydride, it is converted into the other anomer. Explain this observation. Two axial hydrogens on neighboring carbons in a six-membered ring have a larger coupling constant than the two hydrogens that have an axial-equatorial relationship. Identify the proton NMR spectra of two anomeric glucose pentaacetates given.