Solvent effect on reactivity trends for base hydrolysis of 2-oxo-, 2-thio-benzopyran-3-thiocarboxamide, and 2-iminobenzopyran-3-carbonitrile

Rafat M.El-Khatib

首页> 外文期刊>Indian Journal of Chemistry, Section A. Inorganic, Physical, Theoretical & Analytical >Solvent effect on reactivity trends for base hydrolysis of 2-oxo-, 2-thio-benzopyran-3-thiocarboxamide, and 2-iminobenzopyran-3-carbonitrile

【24h】

Solvent effect on reactivity trends for base hydrolysis of 2-oxo-, 2-thio-benzopyran-3-thiocarboxamide, and 2-iminobenzopyran-3-carbonitrile

机译：溶剂对2-氧-，2-硫代-苯并吡喃-3-硫代羧酰胺和2-亚氨基苯并吡喃-3-甲腈的碱水解反应趋势的影响

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Kinetics of base-catalysed hydrolyses of 2-oxobenzopyron-3-carboxamide, 2-thiobenzopyron-3-carboxamide, and 2-iminobenzopyran-3-carbonitrile are studied in aqueous methanol mixtures and the effect of solvent on change in the activation barrier (delta_mDELTAG) is measured. Solvent effects on reactivity trends for base hydrolysis of these compounds have been analysed into initial state and transition state components which are determined from transfer chemical potentials and kinetic data. It is observed that the substituents O, S or N in position two and thiocarboxamide or carbonitrile in position three affect the rate constant and change the activation barrier.

机译：在甲醇水溶液混合物中研究了2-氧代苯并吡喃-3-甲酰胺，2-硫代苯并吡喃-3-甲酰胺和2-亚氨基苯并吡喃-3-甲腈的碱催化水解动力学，以及溶剂对活化屏障变化的影响（delta_mDELTAG ）进行测量。已将溶剂对这些化合物的碱水解反应活性趋势的影响分析为初始状态和过渡状态组分，这些组分由转移化学势和动力学数据确定。观察到，在第二位的取代基O，S或N以及在第三位的硫代甲酰胺或甲腈影响速率常数并改变活化势垒。

著录项

来源
《Indian Journal of Chemistry, Section A. Inorganic, Physical, Theoretical & Analytical》 |2002年第8期|共5页
作者
Rafat M.El-Khatib;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类化学;化学工业;
关键词

相似文献

外文文献
中文文献
专利

1. Solvent effect on reactivity trends for base hydrolysis of 2-oxo-, 2-thio-benzopyran-3-thiocarboxamide, and 2-iminobenzopyran-3-carbonitrile [J] . Rafat M.El-Khatib Indian Journal of Chemistry, Section A. Inorganic, Physical, Theoretical & Analytical . 2002,第8期

机译：溶剂对2-氧-，2-硫代-苯并吡喃-3-硫代羧酰胺和2-亚氨基苯并吡喃-3-甲腈的碱水解反应趋势的影响
2. Reactivity of base catalysed hydrolysis of 2-pyridinylmethylene-8- quinolinyl-Schiff base iron(II) iodide complexes: Solvent effects [J] . Mohamad A.D., Adam M.S.S. Chemicke Zvesti . 2013,第4期

机译：碱催化的2-吡啶基亚甲基-8-喹啉基-席夫碱碘化铁（II）配合物的水解反应：溶剂效应
3. Hydrophobicity and Reactivity of Base Hydrolysis of Some Novel Low Spin Fe(II) Amino Acid Schiff Base Complexes in Some Binary Aqueous Solvent Mixtures [J] . Ali M.Shaker, Lobna A.E.Nassr Journal of Solution Chemistry . 2004,第11期

机译：某些二元水溶液混合物中某些新型低自旋Fe（II）氨基酸Schiff碱配合物的疏水性和碱水解反应性
4. Recovery Of Acetic Acid As A Value Added Product From Pre-Hydrolysis Liquor Of The Kraft Based Dissolving Pulp Production Process By Reactive Extraction (PPT) [C] . L. Ahsan, M. Jahan, H. Liu Annual Meeting Pulp and Paper Technical Association of Canada . 2013

机译：通过反应提取（PPT）从基于牛皮纸的溶解纸浆生产过程的预水解液中加入乙酸作为增值产物的复制产物
5. Relationship between ligand structure and reactivity for copper(II) complex mediated hydrolysis of phosphate diesters, carboxylic esters, and amides. Part~I. Hydrolysis of phosphate diesters promoted by copper(II) complexes. Part~II. Hydrolysis of carboxylic esters and amides catalyzed by copper(II) complexes. [D] . Jubian, Vrej. 1991

机译：铜（II）配合物介导的磷酸二酯，羧酸酯和酰胺水解的配体结构与反应性之间的关系。第一部分铜（II）配合物促进的磷酸二酯的水解。第二部分铜（II）配合物催化的羧酸酯和酰胺的水解。
6. Study of the hydrolysis and ionization constants of Schiff base from pyridoxal 5-phosphate and n-hexylamine in partially aqueous solvents. An application to phosphorylase b. [O] . J Donoso, F Muñoz, A García Del Vado, 1986

机译：在部分水性溶剂中研究吡咯醛5-磷酸和正己胺对席夫碱的水解和电离常数。磷酸化酶的应用b。
7. Hydrophobicity, reactivity trends of base catalyzed hydrolysis of some novel high spin Fe(II) Schiff base amino acid chelates in some binary aqueous solvent mixtures: Initial-transition state analysis [O] . Laila H. Abdel-Rahman, Rafat M. El-Khatib, Lobna A.E. Nassr, 2017

机译：一些二元水溶剂混合物中一些新型高自旋Fe（II）席夫碱氨基酸螯合物的碱催化水解的疏水性，反应性趋势：初始 - 过渡态分析

Solvent effect on reactivity trends for base hydrolysis of 2-oxo-, 2-thio-benzopyran-3-thiocarboxamide, and 2-iminobenzopyran-3-carbonitrile

摘要

著录项

相似文献

相关主题

期刊订阅