Preparation and NMR characterisation of hydrogen bonding in 2-and 2, 6-bis-(N, N-diethylaminomethyl)-4R-phenols

…, H Maciejewska, B Brzezinski, G Zundel

文献索引：Brycki, Bogumil; Maciejewska, Hanna; Brzezinski, Bogumil; Zundel, Georg Journal of Molecular Structure, 1991 , vol. 246, # 1/2 p. 61 - 71

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被引用次数: 12

摘要

Abstract A series of Mannich mono-and di-bases derived from 4-substituted phenols were prepared and investigated by 1 H and 13 C NMR spectroscopy in chloroform-d 1 solution. The chemical shifts of intramolecular hydrogen-bonded protons in Mannich bases depend on the pK a of the parent phenols. A correlation between Hammett's constants, σ p, and 13 C NMR chemical shifts of para carbon atoms has been found. All the results obtained from 1 ...