Using <sup>2</sup>
H labelling to improve the NMR detectability of pyridine and its derivatives by SABRE
作者:Philip Norcott、Michael J. Burns、Peter J. Rayner、Ryan E. Mewis、Simon B. Duckett
DOI:10.1002/mrc.4703
日期:2018.7
By introducing a range of 2 H 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 T1 relaxation for the remaining 1 H nuclei are increased and show how this leads to a concomitant increase in the level