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1H and 13C NMR spectra of N‐substituted morpholines

1H and 13C NMR data for N‐substituted morpholines 1–20 were measured using 1D (DEPT, 1D NOE difference) and 2D NMR spectroscopic methods including 1H–1H COSY, long‐range 1H–1H COSY, NOESY, gHMBC and gHMQC experiments. At room temperature the 1H NMR spectra of protonated compounds 2 and 9 show the chair conformation for the morpholine ring. Spin–spin coupling constants were deduced from the resolution‐enhanced proton spectra. Copyright © 2005 John Wiley & Sons, Ltd.