86804-91-3Relevant academic research and scientific papers
Reactions of a series of 1-aminobenzimidazoles and 1-amino-3- methylbenzimidazolium chlorides with 2,4-pentanedione
Kaiya, Toyo,Aoyama, Shinsuke,Kohda, Kohfuku
, p. 37 - 42 (2007/10/03)
Reactions of a series of 1-aminobenzimidazoles and 1-amino-3- methylbenzimidazolium chlorides with 2,4-pentanedione were carried out and pyridazino[1,6-a]benzimidazoles and 2-pyrazolylanilines were generated. The product ratios of these compounds remarkably depended on the reaction conditions and on the electronic character of the substituent at the benzene moiety. The possible mechanisms involved in these reactions are discussed. (C) 2000 Elsevier Science Ltd.
QUATERNARY 1-AMINOBENZIMIDAZOLIUM SALTS IN REACTIONS WITH β-DICARBONYL COMPOUNDS. FORMATION OF PYRIDAZINO/1,6-a/BENZIMIDAZOLIUM CATIONS AND 1-ARYLPYRAZOLES
Kuz'menko, V. V.,Kuz'menko, T. A.,Simonov, A. M.
, p. 209 - 214 (2007/10/02)
Pyridazino/1,6-a/benzimidazolium cations and 1-(o-methylaminoaryl)-4-acetylpyrazoles are formed simultaneously in approximately equal amounts in the reaction of excess acetylacetone with quaternary 1-aminobenzimidazolium salts in aqueous potassium carbonate solution.Mesoionic pyridazinobenzimidazoles and the corresponding 4-ethoxycarbonylpyrazoles were obtained with acetoacetic ester under similar conditions.
