High-field proton and carbon-13 nuclear magnetic resonance studies of the conformational dynamic properties of seven-membered rings. 3-Substituted derivatives of …

D Ménard, M St. Jacques

Index: Menard, D.; St-Jacques, M. Journal of the American Chemical Society, 1984 , vol. 106, # 7 p. 2055 - 2063

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Citation Number: 11

Abstract

Abstract: The conformational and dynamic properties of the 3-methyl (6), 3-methoxy (7), and 3-methoxy-3-methyl (8) derivatives of 1, 5-benzodioxepin 1 have been investigated by high- field'H and I3C NMR methods. Analyses of the spectra at low temperatures (below coalescence) indicate that in CHF2Cl 6 exists as a mixture of three stable conformations in a 58: 32: 10 ratio which are found to be Ce (chair form with an equatorial methyl group), TB, ...