Utilizing on- and off-line monitoring tools to follow a kinetic resolution step during flow synthesis [0.03%]
利用在线和离线监测工具在流动合成过程中跟踪动力学解析步骤
Kathleen A Farley,Usa Reilly,Dennis P Anderson et al.
Kathleen A Farley et al.
In situ reaction monitoring tools offer the ability to track the progress of a synthetic reaction in real time to facilitate reaction optimization and provide kinetic/mechanistic insight. Herein, we report the utilization of flow NMR, flow ...
Boris Gouilleux,Benoît Charrier,Serge Akoka et al.
Boris Gouilleux et al.
Benchtop NMR emerges as an appealing alternative to widely extend the scope of NMR spectroscopy in harsh environments and for on-line monitoring. Obviously, the use of low-field magnets induces a dramatic reduction of the spectral resolutio...
Diffusion NMR [0.03%]
扩散核磁共振谱法
Mathias Nilsson
Mathias Nilsson
Combined maximum-quantum and DOSY 3D experiments provide enhanced resolution for small molecules in mixtures [0.03%]
结合最大量子和Dosy三维实验可提高混合物中小分子的分辨率
G N Manjunatha Reddy,Mehdi Yemloul,Stefano Caldarelli
G N Manjunatha Reddy
We illustrate here as the combination of high-order maximum-quantum (MaxQ) and Diffusion-Ordered SpectroscopY (DOSY) NMR experiments in a 3D layout allows superior resolution for crowded NMR spectra. Non-uniform sampling (NUS) allows compre...
Synthesis and structure elucidation using 2D NMR and thermal coefficient investigation on amino acid tethered quinoxalines [0.03%]
基于二维核磁和热参量的连接氨基酸的喹喔啉类化合物的合成与结构鉴定
Suhas A Shintre,Deresh Ramjugernath,Parvesh Singh et al.
Suhas A Shintre et al.
ESR line width and line shape dependence of Overhauser-enhanced magnetic resonance imaging [0.03%]
欧文赫尔增强磁共振成像的电子自旋共振线宽及线形依赖关系
V Meenakumari,Hideo Utsumi,A Jawahar et al.
V Meenakumari et al.
Electron spin resonance and Overhauser-enhanced magnetic resonance imaging studies were carried out for various concentrations of 14 N-labeled 3-carbamoyl-2,2,5,5-tetramethyl-pyrrolidine-1-oxyl in pure water. Overhauser-enhancement factor a...
Offset-compensated and zero-quantum suppressed ROESY provides accurate 1 H-1 H distances in small to medium-sized molecules [0.03%]
偏移补偿和零量子抑制的ROESY可提供小分子至中等大小分子中准确的氢氢距离信息
Sándor Boros,Gyula Batta
Sándor Boros
A robust version of the off-resonance ROESY pulse scheme is suggested for the measurement of proton-proton distances or slow chemical exchange in small to medium-sized molecules. The method implements adiabatic ramps to establish a pair of ...
Effect of magnetic pore surface coating on the NMR relaxation and diffusion signal in quartz sand [0.03%]
磁性孔隙表面涂敷对石英砂核磁弛豫和扩散信号的影响
Markus Duschl,Andreas Pohlmeier,Timothy I Brox et al.
Markus Duschl et al.
Magnetic impurities are ubiquitous in natural porous media such as sand and soil. They generate internal magnetic field gradients because of increased magnetic susceptibility differences between solid and liquid phase in the pore space and ...
The NMR characterization of locked conformations of two stereoisomers of calix[4]tetrahydrofuran [0.03%]
两个calix[4]四氢呋喃立体异构体的锁定构象的NMR表征
D Thevenet,G Journot,H Stoeckli-Evans et al.
D Thevenet et al.