Mesoporous SBA-15 Silica Phenylsulfonic Acid (SBA-15-Ph-SO3H) as Efficient Nanocatalyst for One-pot Three-component Synthesis of 3-Methyl-4-aryl-2,4,5,7-tetrahydropyrazolo[3,4-b]pyridine-6-ones
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Heterocyclic Chemistry"
DOI: 10.1002/jhet.2689
Abstract: A simple, economical, and efficient approach to the one-pot synthesis of 3-methyl-4-aryl-2,4,5,7-tetrahydropyrazolo[3,4-b]pyridine-6-ones by multicomponent assembling of 5-methylpyrazol-3-amine, aldehydes, and Meldrum's acid using mesoporous silica phenylsulfonic acid (SBA-15-Ph-SO3H) as recyclable and heterogonous solid acid nanocatalyst has… read more here.
Keywords: sba; synthesis methyl; aryl tetrahydropyrazolo; one pot ... See more keywords
Silica-Supported Ionic Liquids Prompted One-Pot Four-Component Synthesis of Pyrazolopyranopyrimidines, 3-methyl-4-aryl-4,5-dihydro-1H-pyrano[2,3-c]pyrazol-6-ones, and 1,6-diamino-2-oxo-1,2,3,4-tetrahydropyridine-3,5-dicarbonitriles
Sign Up to like & getrecommendations! Published in 2017 at "Polycyclic Aromatic Compounds"
DOI: 10.1080/10406638.2015.1112821
Abstract: ABSTRACT Three methods have been used for synthesis of pyrazolopyranopyrimidines, 3-methyl-4-aryl-4,5-dihydro-1H-pyrano[2,3-c]pyrazol-6-ones, and 1,6-diamino-2-oxo-1,2,3,4-tetrahydropyridine-3,5-dicarbonitrile derivatives via four-component reactions under solvent-free conditions. Silica-bonded 5-n-propyl-octahydro-pyrimido[1,2-a]azepiniumchloride (SB-DBU+Cl−), silica-bonded n-propyl-4-aza-1-azoniabicyclo[2.2.2]octane chloride (SB-DABCO+Cl−), and nano silica-bonded 5-n-propyl-octahydro-pyrimido[1,2-a]azepinium chloride (NSB-DBU+Cl−) as silica-supported… read more here.
Keywords: aryl dihydro; pyrazolopyranopyrimidines methyl; pyrano pyrazol; dihydro pyrano ... See more keywords