A 1H and 13C NMR conformational study of methyl??substituted isochromanes

…, J Mattinen, E Kleinpeter, R Meusinger…

Index: Pihlaja, K.; Mattinen, J.; Kleinpeter, E.; Meusinger, R.; Duscheck, Ch.; Borsdorf, R. Magnetic Resonance in Chemistry, 1985 , vol. 23, # 9 p. 754 - 758

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Citation Number: 5

Abstract

Abstract The 1 H and the noise-decoupled 13 C NMR spectra of isochromane and 13 of its methyl-substituted derivatives were recorded and analysed. The collected data were used to assign the configurations and to determine the position of the conformational equilibria based on the vicinal 1 H coupling constants of the aliphatic moiety of the ring system. In some cases the substitution site-dependent conformational energies of the methyl ...