- Application of the Gould-Jacobs reaction to 4-amino-2,1,3- benzoselenadiazole
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An effective method for the synthesis of 4-amino-2,1,3-benzoselenadiazole (4) has been described. Reduction of readily available 4-nitrobenzothiadiazole 6 with SnCl2·2H2O afforded 1,2,3-triaminobenzene dihydrochloride 2. The latter u
- Bella, Maro,Schultz, Marcel,Milata, Viktor,Koariková, Katarína,Breza, Martin
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experimental part
p. 8169 - 8174
(2010/11/18)
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- Hydrogenation on palladium-containing granulated catalysts 3. Synthesis of aminobenzimidazoles by catalytic hydrogenation of dinitroanilines
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Efficient hydrogenation of o-aminonitrobenzenes on palladium-containing granulated carbon catalysts in carboxylic acid solutions was accompanied by cyclization into aminobenzimidazoles. A simple hydrogenation reactor with a fixed gauze holding a reusable granulated catalyst was designed. Acylated and sulfonylated 4(7)-aminobenzimidazoles were obtained. In terms of electronic and geometrical parameters, they are close analogs of biologically active imidazo[1,5,4-e,f ][1,5]benzodiazepines.
- Elkin,Tolkacheva,Chernysheva,Karmanova,Konyushkin,Semenov
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p. 1216 - 1226
(2008/09/19)
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