One-pot three-component synthesis of a series of 4-aroyl-1,6-diaryl-3-methyl-1H-pyrazolo[3,4-b]pyridine-5-carbonitriles in the presence of aluminum oxide as a nanocatalyst
Sign Up to like & getrecommendations! Published in 2018 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-018-2229-7
Abstract: One-pot three-component reaction of arylglyoxals, 3-aryl-3-oxopropanenitriles, and 5-amino-1-aryl-3-methylpyrazoles using various solvent systems and different catalysts under reflux conditions afforded the corresponding 4-aroyl-1,6-diaryl-3-methyl-1H-pyrazolo[3,4-b]- pyridine-5-carbonitrile derivatives. The best yields (70–91%) were obtained using Al2O3 as a nanocatalyst… read more here.
Keywords: aroyl diaryl; diaryl methyl; three component; one pot ... See more keywords
Synthesis and Some Transformations of 7-(Fur-2-yl)-1-methyl-1H-pyrazolo[4,3-g][1,3]benzothiazole
Sign Up to like & getrecommendations! Published in 2018 at "Russian Journal of General Chemistry"
DOI: 10.1134/s1070363218030088
Abstract: N-Methylation of 5-nitro-1H-indazole in a KOH–DMSO system resulted in a mixture of 1-methyl-5(6)-nitroindazoles in a ratio of 1: 2. Reduction of the isomers with tin in concentrated hydrochloric acid afforded pure 1-methyl-1H-indazole-6-amine. Condensation of the… read more here.
Keywords: methyl pyrazolo; transformations fur; pyrazolo benzothiazole; fur methyl ... See more keywords