NMR-STUDY OF SUBSTITUTED 1-BROMO-2-ARYLOXYETHANES AND MONOSUBSTITUTEDXANTHONES

H-1 and C-13 NMR spectra were measured for a series of synthetic subst ituted 1-bromo-2-aryloxyethanes and and monosubstituted xanthones. Sub stituent effects were analysed and compared with those of the respecti ve 3-aryloxypropiononitriles with the same substitution pattern. Spect ral assignments were made on the basis of comparisons of coupled and H -1-decoupled C-13 spectra and DEPT experiments. Two-dimensional homonu clear H-1-H-1 and heteronuclear H-1-C-13 techniques (COSYDQF and XHCOR RDC) were used for unequivocal signal-assignments.