1H-PYRAZOLO[3
![Aspects on the Mechanism of the 1 Phenyl 1H pyrazolo[3,4 b]quinoxaline Formation](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
Aspects on the Mechanism of the 1 Phenyl 1H pyrazolo[3,4 b]quinoxaline Formation
... Condensation of D-glucose and 4,5-dichloro-o-phenyl- enediamine (6) afforded 6,7-dichloro-2-(D-arabino-tetri- tol-1-yl)quinoxaline (7) which was reacted with NNBPHH in acidic medium, to afford the corresponding 6,7-di- ...
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Synthesis, Reactions and Characterization of 1,1’ (1,4 Phenylenebis(3 amino 6 methyl 1H pyrazolo[3,4 b]pyridine 4,5 diyl))bis(ethan 1 one)
... The chemical reactivity and synthetic potential of 4 were investigated via its chemical reaction with 2-bro- mo-1-phenylethanone and 2-bromo-1-(4-chlorophenyl)ethanone in dimethylformamide (10 mL) containing po- tassium ...
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Crystal structure of 3 methyl 1 phenyl 6 propylamino 1H pyrazolo[3,4 b]pyridine 5 carbonitrile
... Pyrazolo[3,4-b]pyridines (Häufel & Breitmaier, 1974; El-Emary et al., 2007; Dodiya et al., 2013) are attractive targets in organic synthesis and are being extensively investigated because of their wide range ...
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3 tert Butyl 4 (4 nitrophenyl) 1 phenyl 1H pyrazolo[3,4 b]pyridine
... of pyrazolo[3,4- b]pyridines from 5-aminopyrazoles in solution with different reactants (Low et ...aromatized 3- methyl-1,4-diphenyl-1H-pyrazolo[3,4-b]pyridine (Low et ...of 3-tert- ...
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The Inhibiting Effect of Non Toxic 4-Amino antipyrine and 4,6- Dimethyl-1H-pyrazolo[3,4-b]pyridin-3-amine on Mild steel Corrosion in Sulphuric acid
... The starting material 4,6-dimethyl-1H-pyrazolo[3,4-b]pyridin-3-amine (1) was prepared according to the reported method [17, 18] as shown in the following scheme which involves the preparation of ...
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4 (4 Bromophenyl) 3 methyl 1 phenyl 4,5 dihydro 1H pyrazolo[3,4 b]pyridin 6(7H) one
... reaction of 5-amino-3-methyl-1-phenylpyrazole with 4-bromo- phenylaldehyde and Medrum’s acid in glycol under microwave irradiation. X-ray crystal structure analysis reveals three crystallographically independent ...
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6,7 Dihydro 4 (4 methoxyphenyl) 3 methyl 6 oxo 1 phenyl 1H pyrazolo[3,4 b]pyridine 5 carbonitrile
... Moreover, pyrazolo[3,4-b]pyridin-6-ones as a subunit of pyrazolo[3,4-b]pyridine acted as potential hypnotic drugs in many cases (Falcó et ...of pyrazolo[3,4-b]pyridine derivatives including ...
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4 (4 Fluorophenyl) 3 methyl 6 oxo 1 phenyl 4,5,6,7 tetrahydro 1H pyrazolo[3,4 b]pyridine 5 carbonitrile
... The pyrazolo[3,4-b]pyridine system has many interesting biological and pharmacological properties and is used in the treatment of a wide variety of stress-related illnesses (Seki- kawa et ...title ...
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4 (4 Bromophenyl) 4,5,6,7 tetrahydro 3 methyl 6 oxo 1 phenyl 1H pyrazolo[3,4 b]pyridine 5 carbonitrile ethanol solvate
... cooling to room temperature, 5-amino-3-methyl-1-phenylpyrazole (1 mmol) was added and the mixture was stirred at room temperature for a certain period of time to complete the reaction (monitored by TLC). The ...
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Crystal structure analysis of ethyl 3 (4 chlorophenyl) 1,6 dimethyl 4 methylsulfanyl 1H pyrazolo[3,4 b]pyridine 5 carboxylate
... The nitrogen-containing heterocyclic motif is a component in many medicinally important drugs. Molecules built around the pyrazolopyridine core structure exhibit diverse medicinal properties that include anti-microbial, ...
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Utility of Styrylpyrazoloformimidate in the Synthesis of Fused Heterocyclic Compounds
... formimidate 3. Treatment of 3 with hydrazine hy- drate in ethanol afforded amino imino compound ...of pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidine ...to ...
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Vol 8, No 1 (2019)
... new 3-(substituted phenyl)-N-(2-hydroxy-2-(substituted phenyl)ethyl)-N-methylthiophene-2-sulfonamide derivatives as antiproliferative agents, ...of 3-(substituted)-4,5,6,7-tetrahydro- ...
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Synthesis of 1H pyrazolo[1, 2 b]phthalazine 5,10 dione derivatives using NiFe2O4 Nanoparticle as a Heterogeneous Catalyst
... [1-5]. 1H-pyrazolo [1,2-b]phthalazine-5,10-diones are important nitrogen containing heterocycles that are known to possess multiple pharmacological and biological activities such as anticancer ...
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Synthesis and antimicrobial screening of pyrazolo-3-aryl quinazolin-4(3h)ones
... 3,5’-(p-Dimethoxyphenyl) pyrazolo-[3’,4’-a] quinazolin-4(3H)one (4 a-1 ) was synthesized as follows; To a solution of compound (3 a-1 ) ...tricyclic pyrazolo quinazolinones, IR (KBr): 1665 cm ...
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SYNTHESIS AND EVALUATION OF ANTIMICROBIAL ACTIVITY OF 1-BENZOYL-1H-PYRAZOLO [4,3-C]QUINOLIN-4(5H)-ONES
... The prominence, structural diversity and biological importance of quinolin-2(1H)-one have made them attractive target for synthesis over many years 1 . Pyrazolo [4,3-c]quinolin-4(5H)-one form a class of ...
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Liquid-Liquid Extraction Of Zinc By 3-Methyl-Quinoxaline-2-Thione From Nitrate Medium
... phenylenediamine and ethyl pyruvate in distilled water acidified (by sulphuric acid) for one hourat room temperature, results in the formation of 1: 3- méthylquinoxalin-2 (1H), which is purified by re- ...
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Glycerol promoted catalyst free one pot three component synthesis of 1H pyrazolo[1,2 b]phthalazinediones
... This report will enthuse contemporary organic chemist toward direct utilization of glycerol as promoting medium to generate conspicuous molecules such as 1H-pyrazolo[1,2-b]phthalazinediones. We have ...
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1H Indole 3 carbaldehyde
... Data collection: APEX2 Bruker, 2004; cell refinement: APEX2 and SAINT Bruker, 2004; data reduction: SAINT and XPREP Bruker, 2004; programs used to solve structure: SHELXS97 Sheldrick, 20[r] ...
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3 (1H Indol 3 yl) 4 (3,4,5 trimethoxyphenyl) 2,5 dihydro 1H pyrrole 2,5 dione
... The title compound, (I), containing the maleimide (1H- pyrrole-2,5-dione) moiety as the core structure, was prepared in an attempt to synthesize analogues of combretastatin A-4, a well known antithrombotic ...
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2′ [(5 Chloro 1H indol 3 yl)methylene] 2 (1H indol 3 yl)acetohydrazide
... The hydrazone that is formed by condensing 5-chloroindole-3- carbaldehyde with benzoylhydrazine adopts a hydrogen- bonded layer structure as the amide O atom functions as an N—H O acceptor for the amide and amine ...
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