Research Article

Clean Procedure and DFT Study for the Synthesis of 2-Amino-3-ethoxycarbonyl-4-(aryl)-4H-pyrano-[3,2-c]-chromene-5-ones Derivatives: A Novel Class of Potential Antimicrobial and Antioxidant Agents

Table 3

NBO charges of the acidic protons of compound 5c calculated at the DFT/B3LYP level of theory.

NBO charge of the acidic protons

Ha Hb Hc
0.400.440.210.210.29