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- W2027047434 abstract "The 1H, 13C and 15N NMR spectra of 4-bromo-6-diethylaminomethyl-2-R-iminomethyl-phenol have been recorded in CDCl3, in temperatures of 230–300 K. The presence of equilibrium between the two competitive OH⋯NCH2 and OH⋯NC intramolecular hydrogen bonds has been found. The rotation of the OH group slows down at 230 K (in the NMR-time scale). Compound 1 (RNC2H5) exists mainly with the OH group engaged in the intramolecular hydrogen bond to the imine-N atom (85%). The weakening the hydrogen bond by substitution of the N-alkyl by the N-aniline group (compound 2) increases the population of the Mannich type form (to 40%)." @default.
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- W2027047434 date "2001-05-01" @default.
- W2027047434 modified "2023-10-16" @default.
- W2027047434 title "Multinuclear NMR study of the intramolecular hydrogen bond in Schiff–Mannich bases" @default.
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- W2027047434 doi "https://doi.org/10.1016/s0022-2860(00)00788-2" @default.
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