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1H-1,2,4-TRIAZOLO-5-DIAZONIUM SALTS IN THE SYNTHESIS OF NOVEL [1,2,4]TRIAZOLO[1,5-c][1,2,4]BENZOTRIAZIN-6-OLS
Abstract
Condensation of 1H-1,2,4-triazolo-5-diazonium salts with 1,3-cyclohexanedione, accompanied by cascade processes of cyclization and
oxidative aromatization, brought about the synthesis of novel derivatives of [1,2,4]triazolo[5,1-c][1,2,4]benzotriazin-6-ols.
oxidative aromatization, brought about the synthesis of novel derivatives of [1,2,4]triazolo[5,1-c][1,2,4]benzotriazin-6-ols.
Keywords
hydrazones; [1,2,4]triazolo[5,1-c][1,2,4]benzotriazin-6-ols; 1H-1,2,4-triazolo-5-diazonium salts; 1,3-cyclohexanediones; diazotation; oxidation.
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv