Auto-aromatization of the σH-adducts of 1,2,4-triazine 4-oxides with carbanions in reactions of nucleophilic substitution of hydrogen

1,2,4-Triazine 4-oxides react with stable carbanions to form 5-substituted 1,2,4-triazines as the products of deoxygenation nucleophilic substitution of hydrogen.