A 77 Aromatic nucleophilic substitution in 1,2,4-triazine 4-oxides with Grignard reagents [Text] / A. M. Prokhorov, D. N. Kozhevnikov, V. L. Rusinov, O. N. Chupakhin // Polish Journal of Chemistry. - 2003. - Vol. 77, № 9. - P1157-1161 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Addition of the Grignard reagents to 1,2,4-triazine 4-oxides followed by aromatization of the intermediate ?H-adducts by dehydrogenation or dehydration was used for synthesis of 5-alkyl- or 5-aryl-substituted 1,2,4-triazines and their 4-oxides. |