NMR Study of the Hydrogen Bonding of Sterically Hindered Phenols with Alicyclic Ethers and Pyridine
作者:
T.S. Pang,
Soon Ng,
期刊:
Spectroscopy Letters
(Taylor Available online 1974)
卷期:
Volume 7,
issue 8
页码: 377-380
ISSN:0038-7010
年代: 1974
DOI:10.1080/00387017408067261
出版商: Taylor & Francis Group
关键词: hydrogen-bond chemical shift;enthalpy change;hindered phenols;alicyclic ethers;pyridine
数据来源: Taylor
摘要:
In a preliminary report1it was shown that the hydrogen-bond chemical shift, δAB, correlates with the change in enthalpy, δH, in the interaction of chloroform with a series of closely related oxygen and nitrogen bases. In this communication, we report the hydrogen bonding parameters for the interaction in cyclohexane medium between 2,4,6-tri-t-butylphenol and tetrahydrofuran, tetrahydropyran and pyridine, and between 2,6-di-1-adamantyl-4-t-butylphenol and pyridine. There is correlation between the δABand δAEfor the same proton donor (2,4,6-tri-t-butylphenol) and the closely related alicyclic bases, and for the same base (pyridine) and the two closely related sterically hindered phenols. The temperature dependence of the δABin these systems is also reported.
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