Figure 2.
1H-NMR spectra of (a) intermediates (Ia, Ib) in CD3CN, (b) intermediates (Ia, Ib) in D2O, (c) F1 in D2O, (d) F2 in D2O, (e) F3 in D2O, (f) F4 in D2O, and (g) F5 in D2O.
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