Department of Chemistry, The Ohio State University, Columbus, Ohio 43210 U.S.A.
Abstract:
The conformations of d-glucaric acid (1), d-glucaro-1,4-lactone (2), d-glucaro-6,3-lactone (3), and d-glucaro-1,4:6,3-dilactone (4) in solution were investigated by 1H-n.m.r. and 13C-p.F.t., n.m.r. spectroscopy. The solvents used were deuterium oxide, methanol-d4, and dimethyl sulfoxide-d6, and praseodymium chloride was employed as a lanthanide shift-reagent. For 2, it was found that the conformational equilibrium 3E(d)
