Using (2) H labelling to improve the NMR detectability of pyridine and its derivatives by SABRE.

Using (2) H labelling to improve the NMR detectability of pyridine and its derivatives by SABRE.
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DOI:
10.1002/mrc.4703
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发表时间:
2018-07
期刊:
Magnetic resonance in chemistry : MRC
影响因子:
--
通讯作者:
Duckett SB
Duckett SB
中科院分区:
其他
文献类型:
--
作者:
Norcott P;Burns MJ;Rayner PJ;Mewis RE;Duckett SB

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通过在吡啶和对位取代物异烟酸甲酯和异烟酰胺中引入一系列的2H标记,结合可逆交换过程的信号放大,我们显著地提高了它们的核磁共振检测能力。我们描述了剩余的1H核的T1弛豫速率是如何增加的,并展示了这如何导致最终可以检测到的1H和13C超极化水平的伴随增加。
By introducing a range of 2H labels into pyridine and the para‐substituted agents, methyl isonicotinate and isonicotinamide, we significantly improve their NMR detectability in conjunction with the signal amplification by reversible exchange process. We describe how the rates of T 1 relaxation for the remaining 1H nuclei are increased and show how this leads to a concomitant increase in the level of 1H and 13C hyperpolarization that can ultimately be detected.
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