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- W2008671504 abstract "1H NMR measurements indicate that (X-pyridyl)alkanols of the general formula (C5H4N)(CH2)nOH, where n = 1, 2 or 3, self-associate as open dimers, cyclic dimers, trimers and tetramers, with considerable variations depending on the position of the alkyl chain and its length. 2-(X-Pyridyl)propan-2-ols behave like the corresponding pyridylmethanols with, however, somewhat lower association constants. The IR spectra of 3-(X-pyridyl)-2,2,4,4-tetramethylpentan-3-ols (X = 3 or 4) in carbon tetrachloride suggest weak association, while the 2-pyridyl derivative occurs mainly as the intramolecularly hydrogen-bonded rotamer. The OH NMR shifts for the 3- and 4-pyridyl derivatives in benzene are concentration-dependent, but neither the equilibrium constants nor the degree of association can be evaluated. Benzyl alcohol in benzene associates as an open dimer and a cyclic tetramer, as does 2-phenylpropan-2-ol, only more weakly. Rotation barriers for 3-(X-pyridyl)-2,2,4,4-tetramethylpentan-3-ols (X = 2, 3 or 4) in DMSO or nitrobenzene are 20–21 kcal mol−1. Copyright © 2006 John Wiley & Sons, Ltd." @default.
- W2008671504 created "2016-06-24" @default.
- W2008671504 creator A5001325673 @default.
- W2008671504 creator A5005315323 @default.
- W2008671504 creator A5028267991 @default.
- W2008671504 date "2006-05-01" @default.
- W2008671504 modified "2023-10-05" @default.
- W2008671504 title "Proton NMR and IR study of self-association in pyridylalkanols: open or cyclic dimers? higher polymers?" @default.
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