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- W1569761675 abstract "Infrared and ultraviolet absorption spectra of N-methylanthranilic (MA) and N,N-dimethylanthranilic (DMA) acids have been studied in the crystal state and in solution. It has been shown that MA dissolved in inert solvents exists in the molecular (M-) form and that intramolecular hydrogen bonding is absent while, for DMA, the predominant form is the quasi-zwitterionic (Z-) form with a strong intramolecular -COOH · · NR2- hydrogen bond. The Z-form of MA is stable only in highly polar solvents. The M ⇌ Z equilibria have been studied in aqueous solution and Kt = [Z]/[M] was estimated to be ~ 3.75 and ~ 400 for MA and DMA, respectively. The pK values of Z- and M-forms of both acids have been determined." @default.
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- W1569761675 date "1969-10-01" @default.
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- W1569761675 title "Tautomeric and protolytic properties of o-aminobenzoic acids" @default.
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- W1569761675 doi "https://doi.org/10.1016/0022-2860(69)80065-7" @default.
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