Skip to main content
. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Org Lett. 2016 Jul 13;18(15):3614–3617. doi: 10.1021/acs.orglett.6b01655

Figure 4.

Figure 4

(A) Energies of n→π* interactions in β-keto amides 1–3, as calculated in vacuo from second-order perturbation theory implemented by NBO 5.9.20 (B) Percentage of β-keto amides 1–3 populating the trans enol form in CDCl3 at 25 °C, as determined by 1H NMR spectroscopy. Repeated integration yields values within 1% of those depicted.