搜索结果: 1-3 共查到“有机化学 13C NMR”相关记录3条 . 查询时间(0.062 秒)
钯催化Csp-Csp3偶联反应的13C NMR定量研究
13C NMR 钯催化Csp-Csp3偶联反应 反应机理 实时 定量
2009/10/28
利用NOE（Nuclear Overhauser Effect）增强的13C NMR方法对钯催化Csp-Csp3偶联反应过程进行实时、定量监测. 通过制作浓度曲线的方法定量分析了反应过程中各组分的浓度变化. 实验表明，同一物质各个共振峰的NOE增强倍数基本不变. 结果证实了几个主要反应物和产物的含量变化之间具有相关性，提示这些物质同属一个反应过程，为早期提出的反应机理（Zhao Y S, et ...
Investigation of the Cation Complexation by Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation Time Measurements
Investigation the Cation Complexation Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation
2010/4/19
The binding constants (Ka) of [18]crown-6 ether with Na+ , K+, and Ba2+ thiocyanates were determined by 13C{1H} NMR spin--lattice dipolar relaxation time measurements. The observed relaxation times (T...
Synthesis of 2-[2-(3,4,5-Trimethoxybenzoyloxy)ethyl]pyrrolidine Hydrochloride Controlled by GC-MS, 1H and 13C NMR Analyses
2-[2-(3,4,5-trimethoxybenzoyloxy)ethyl]pyrrolidine hydrochloride pyrrolidine derivatives O-acylation of amino alcohols removal of Cbz group
2010/4/19
The synthesis of 2-[2-(3,4,5-trimethoxybenzoyloxy)ethyl]pyrrolidine hydrochloride was performed using 2-(2-hydroxyethyl)pyrrolidine as a starting material. Before the O-acylation reaction with 3,4,5-t...