Fig. 2: Measurements of 2-3∆1H(13/12C) of EtOAc.

Showing H1’ of (a) 1a (light blue), (b) 1b (orange), (c) 1a + 1b, (d) 1a + 1b with C2’ selective decoupling, (e) 1a + 1b with C1 selective decoupling (isotope shifts are magenta); (f) HMBC of EtOAc, zoomed in on H1’-C2’ and H1’-C1 regions; (g) superimposition of H1’-C2’ and H1’-C1 HMBC correlations; (h) overlaid HMBC horizontal slices of H1’-C2’ and H1’-C1.