Quantum chemical studies of azoles 6. The effect of specific solvation on the calculated thermodynamic parameters of electrophilic substitution in tetrazole according to the elimination—addition scheme without preliminary formation of N-protonated azolium salts

Resumo

Quantum chemical calculations (DFT/B3LYP/6-31G(d)) considering specific solvation effects were used to compare the thermodynamic parameters of electrophilic substitution reactions (with the hydroxonium ion as a model electrophile) in 1H-tetrazole according to the addition—elimination and elimination—addition schemes. The latter scheme can proceed without preliminary formation of N-protonated azolium salts, as demonstrated earlier by the DFT/ B3LYP/6-31G(d,p) and DFT/B3LYP/6-31G(2df,p) calculations considering the solvation effects in aqueous solution in terms of the polarizable continuum model (PCM) with a proton as a model electrophile.