pH值对4,4′-双喹啉消旋速率的影响

M. Crawford, R. Ingle
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引用次数: 1

摘要

具有光学活性的4,4′-双喹啉的消旋速率在不同溶剂中变化不大,但在强酸中下降约十倍。这种效应主要是由于分子尺寸对质子化作用的改变。
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The effect of pH on the racemisation rate of 4,4′-biquinolyl
The rate of racemisation of optically active 4,4′-biquinolyl varies only slightly from one solvent to another but drops about tenfold in strong acid. The effect is attributed mainly to alteration of the molecular dimensions on protonation.
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Kinetics and mechanism of electrophilic substitution of heteroaromatic compounds. Part XXIII. Acid-catalysed hydrogen exchange of quinoline, isoquinoline, and their N-oxides Dielectric relaxation and dipole moments of substituted pyrroles Free-radical addition to olefins. Part VII. Addition of trichloromethyl radicals to chloro-olefins Primary hydrogen isotope effects on the rate of ionization of nitroethane in mixtures of water and dimethyl sulphoxide The conformational analysis of saturated heterocycles. Part XXXV. 1-Phenoxymethyl-3,4-dihydroisoquinolines
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