BMIm HCO<sub>3</sub>: an ionic liquid with carboxylating properties. Synthesis of carbamate esters from amines
作者:A. Di Nicola、A. Arcadi、L. Rossi
DOI:10.1039/c6nj02705a
日期:——
1-Butyl-3-methylimidazolium hydrogen carbonate (BMIm HCO3) was used as an ionic liquid with carboxylating properties able to convert, in the presence of an alkyl halide, amines into the corresponding carbamate esters. Moderate to good yields of carbamates were obtained according to the nature of the amine and the alkylating agent.
[DE] VERFAHREN ZUR HERSTELLUNG HETEROCYCLISCHER QUARTÄRER AMMONIUM- UND/ODER GUANIDINIUM-VERBINDUNGEN<br/>[EN] METHOD FOR PRODUCING HETEROCYCLIC QUATERNARY AMMONIUM AND/OR GUANIDINIUM COMPOUNDS<br/>[FR] PROCEDE POUR PRODUIRE DES COMPOSES AMMONIUM ET/OU GUANIDINIUM QUATERNAIRES HETEROCYCLIQUES
申请人:BASF AG
公开号:WO2006027069A1
公开(公告)日:2006-03-16
Verfahren zur Herstellung eines, ein heterocyclisches quartäres Ammonium- und/oder Guanidinium-Kation enthaltenden Zwischenprodukts für die Synthese heterocyclischer quartärer Ammonium- und/oder Guanidinium-Verbindungen, bei dem man heterocyclische quartäre Ammonium- und/oder Guanidinium-carboxylate mit einem oxidierenden Agens in Gegenwart eines Metalls aus der 8. bis 10. Gruppe des Periodensystems bei einer Temperatur von 0 bis 250°C und einem Druck von 0,05 bis 20 MPa abs oxidiert.
parameters of the ILs were estimated. The trends of changing with temperature for the dynamic viscosity and the electrical conductivity were described by the Vogel–Fulcher–Tamman equation. The activation energies of dynamic viscosity and electrical conductivity were also calculated. Further, the structures and the energetics of the ILs ions were obtained through combining density functional theory calculations
制备了10种含有碳酸氢根、磷酸二氢根和硫酸氢根阴离子的烷基咪唑基非质子离子液体(AILs),并分别采用元素分析、红外光谱和质子核磁共振等方法对其进行了表征。测量了电导率、密度、动态粘度、表面张力等特性,并在环境条件下的各种温度范围内与热力学和经验方程相关联。估计了 IL 的一些重要的热力学参数。Vogel-Fulcher-Tamman 方程描述了动态粘度和电导率随温度变化的趋势。还计算了动态粘度和电导率的活化能。更远,ILs离子的结构和能量是通过结合密度泛函理论计算和COSMO-RS方法获得的。结构效应...