Syntheses of N-alkyl, N,N-dialkyl, and N-(4-substituted phenyl) O-ethyl thioncarbamates: a kinetic study

被引：3
|
作者：
Milosavljevic, Milutin M. [4 ]
Marinkovic, Aleksandar D. [3 ]
Veljkovic, Vlada B. [2 ]
Milenkovic, Dragan D. [1 ]
机构：
[1] High Chem Technol Sch, Krusevac 37000, Serbia
[2] Univ Nis, Fac Technol, Leskovac 16000, Serbia
[3] Univ Belgrade, Fac Technol & Met, Belgrade 11120, Serbia
[4] Inst Econ, Belgrade 11000, Serbia
来源：
MONATSHEFTE FUR CHEMIE | 2012年 / 143卷 / 01期
关键词：
Amines; Kinetics; Reaction mechanism; Synthesis; Thioncarbamates; SEMIEMPIRICAL METHODS; AMINOLYSIS; DITHIOCARBONATE; ACETONITRILE; OPTIMIZATION; ISOCYANATES; PARAMETERS; INHIBITORS; MECHANISM;
D O I：
10.1007/s00706-011-0596-1
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The kinetics of the syntheses of N-alkyl, N,N-dialkyl, and N-(4-substituted phenyl) O-ethyl thioncarbamates from sodium ethyl xanthogenacetate, ten alkylamines, and eight substituted anilines were studied at 25, 30, 35, and 40 A degrees C. The reactions were found to follow second-order kinetics. The kinetic (Arrhenius) parameters, such as the activation energy and the frequency factor, as well as the Eyring parameters, such as the standard entropy, the standard Gibbs energy, and the standard enthalpy of activation, were calculated from the second-order rate constants. The mechanism of the reaction was postulated based on the kinetic studies presented and the optimization of the reaction mechanism using the MOPAC PM6 semi-empirical method.
引用
收藏
页码：43 / 49
页数：7
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