Water–SDS–[BMIm]Br composite system for one-pot multicomponent synthesis of pyrano[2,3-c]pyrazole derivatives and their structural assessment by NMR, X-ray, and DFT studies
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DOI: 10.1039/d3ra00137g
Abstract: Here, we report a simple, efficient, and green protocol for the one-pot synthesis of pyrano[2,3-c]pyrazole derivatives via a sequential three-component strategy using aromatic aldehydes, malononitrile and pyrazolin-5-one in a water–SDS–ionic liquid system. This is a… read more here.
Keywords: synthesis pyrano; one pot; pyrazole derivatives; pyrano ... See more keywords
CFL light promoted one-pot synthesis of pyrano[3,2-c]chromen-5(4H)-ones
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DOI: 10.1080/00397911.2018.1426101
Abstract: ABSTRACT An eco-friendly synthesis of pyrano[3,2-c]chromen-5(4H)-one derivatives was conducted by the condensation of 4-hydroxycoumarins, aromatic aldehydes, and acetophenones. Clean profile, excellent yield, ambient temperature, and use of visible light intensity instead of catalyst are the… read more here.
Keywords: pyrano chromen; cfl light; synthesis pyrano; light promoted ... See more keywords
Introduction of Poly(4-Vinylpyridine) as an Efficient Promotor for the Synthesis of Pyrano[2,3-d]Pyrimidinones and Pyrido[2,3-d]Pyrimidines
Sign Up to like & getrecommendations! Published in 2018 at "Polycyclic Aromatic Compounds"
DOI: 10.1080/10406638.2018.1524389
Abstract: Abstract This article describes an efficient method for the synthesis of pyrano[2,3-d]pyrimidinones and pyrido[2,3-d]pyrimidines via promotion of the condensation of aromatic aldehydes, malononitrile and barbituric acid and/or 6-amino-1,3-dimethyluracil in the presence of poly(4-vinylpyridine). All reactions… read more here.
Keywords: poly vinylpyridine; synthesis pyrano; pyrido pyrimidines; pyrano pyrimidinones ... See more keywords
Catalyst-Free Three-Component Tandem Green Synthesis of Pyrano[2,3-d]Pyrimidine Scaffolds in Ethylene Glycol (E-G) as a Recyclable Reaction Medium
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DOI: 10.1080/10406638.2020.1852582
Abstract: A green, efficient and convenient synthesis of pyrano[2,3-d]pyrimidine scaffolds has been developed via one-pot three-component reaction of aryl aldehyde derivatives, malononitrile with barbituric ... read more here.
Keywords: pyrano pyrimidine; three component; synthesis pyrano; pyrimidine scaffolds ... See more keywords
Acidic ionic liquid-catalyzed the synthesis of pyrano[4,3-b]pyran-5(4H)-ones using of 4,4,4-trifluoro-1-phenylbutane-1,3-dione as a keyword substrate.
Sign Up to like & getrecommendations! Published in 2020 at "Current organic synthesis"
DOI: 10.2174/1570179417666200520111536
Abstract: AIMS Synthesis of pyrano[c-2,3]chromens with Ionic Liquid catalyst with simple method. BACKGROUND Synthesis of pyrano[c]coumarins has a special place in the structure due to two bioactive compounds in its structure and attracts a great deal… read more here.
Keywords: ionic liquid; pyrano; reaction; synthesis pyrano ... See more keywords
Ligand Free One-Pot Synthesis of Pyrano[2,3-c]pyrazoles in Water Extract of Banana Peel (WEB): A Green Chemistry Approach
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DOI: 10.3389/fchem.2019.00944
Abstract: Here, we have developed a novel, simple, efficient, and green protocol for one-pot synthesis of pyrano[2,3-c]pyrazole using arylidene malononitrile and pyrazolone in Water Extract of Banana Peels (WEB) as a reaction medium at room temperature… read more here.
Keywords: water extract; chemistry; pot synthesis; extract banana ... See more keywords