不同温度下香豆素和硫代香豆素在二元水-甲醇混合物中碱水解的反应活性趋势。
Reactivity trends of the base hydrolysis of coumarin and thiocoumarin in binary aqueous-methanol mixtures at different temperatures.
作者信息
El-Khatib Rafat Mohamad, Nassr Lobna Abdel-Mohsen Ebaid
机构信息
Chemistry Department, Faculty of Science, Sohag University, Sohag 82524, Egypt.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2007 Jul;67(3-4):643-8. doi: 10.1016/j.saa.2006.08.023. Epub 2006 Aug 24.
PMID:17023196
Abstract
Rate constants for base hydrolysis of both coumarin and thiocoumarin have been studied in different binary aqueous-methanol mixtures at temperature range from 288 to 313 K. The activation parameters of the reactions were evaluated. Moreover, the change in the activation barrier of the investigated compounds from water to water-methanol mixtures were estimated from the kinetic data.
摘要
在288至313 K的温度范围内，研究了香豆素和硫代香豆素在不同二元水-甲醇混合物中碱水解的速率常数。评估了反应的活化参数。此外，根据动力学数据估算了所研究化合物从水到水-甲醇混合物时活化能垒的变化。
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