The assignment of the 1H and the 13C NMR chemical shifts of N-phenyl-2,4-dimethylbuta-1,3-diene-1,4-sultam |
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Authors: | R. Radeglia,E. Fangh nel |
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Affiliation: | R. Radeglia,E. Fanghänel |
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Abstract: | The assignment of the signals in the 13C and 1H NMR spectra of N-phenyl-2,4-dimethylbuta-1,3-diene-1,4-sultam is difficult for the signal pairs C-2 and C-4, C-1 and C-3, (C-1)? H, (C-2)? CH3 and (C-4)? CH3. The 13C NMR spectrum recorded under gated decoupling conditions provide long-range couplings which make possible an unambiguous assignment of the 13C NMR signal pairs. Application of the 1H CW off-resonance decoupling technique in recording the 13C NMR spectra enables the assignment information from the 13C NMR spectrum to be transferred to the 1H NMR spectrum. |
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