Synthesis of Some Pyrimidine, Pyrazole, and Pyridine Derivatives and Their Reactivity Descriptors

Figure 3

Solid surface (8 bands) of ESP maps and color codes. The color code reflects electrostatic potential energy values in kJ/mol. The redder the area is, the higher the electron density is susceptible to electrophilic attack and the bluer the area is, the lower the electron density is that could easily bind with a nucleophile.