Abstract
Equilibrium constants for proton transfer complex formation between 2,4-dinitrophenol and aliphatic amines have been measured at 25°C for benzene solvents containing small amounts of dimethylformamide, acetonitrile, ethyl acetate, or dioxane. The results support the concept of amine-solvent hydrogen bond formation, which increases the reactivity of the amines as bases. Such hydrogen bonds increase amine basicity more than would the inductive effects of an added alkyl group.
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