Synthesis of pyridinium ylides and simulation of their 1,3-dipolar cycloaddition mechanism

Synthesis of some pyridinium ylides with different 4-R-phenyl substituents (R = H, MeO, Me, NO₂, F) has been performed. Quantum-chemical calculations on the spatial and electronic structure, as well as the modeling of 1,3-dipolar cycloadddition reaction of these compounds have been carried out. The results of computer modeling are in good agreement with the results of the synthesis of these compounds.