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. 2018 Jan 25;56(7):663–671. doi: 10.1002/mrc.4703

Figure 4.

Figure 4

Top: thermal 13C{1H} NMR spectrum of 3a (100 mM) and SABRE catalyst (5 mM) in methanol‐d 4 over 32 scans. Bottom: single‐scan hyperpolarized 13C{1H} NMR spectrum