Mechanochemical Synthesis of N-Aryl Amides from O-Protected Hydroxamic Acids.
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DOI: 10.1002/cplu.202000451
Abstract: Two robust and efficient mechanochemical protocols for the synthesis of an array of N-arylamides have been developed. This was achieved by a C-N cross-coupling between O-pivaloyl hydroxamic acids and aryl iodides or aryl boronic acids,… read more here.
Keywords: hydroxamic acids; amides protected; mechanochemical synthesis; aryl amides ... See more keywords
Synthesis of N2‐Aryl‐2′‐Deoxyguanosine Modified Phosphoramidites and Oligonucleotides
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DOI: 10.1002/cpnc.93
Abstract: The N2‐position of 2′‐deoxyguanosine (N2‐position in dG) is well known for forming carcinogenic minor groove DNA adducts, which originate from environmental pollutants, chemicals, and tobacco smoke. The N2‐dG DNA adducts have strong implications on biological… read more here.
Keywords: modified phosphoramidites; dna; synthesis; deoxyguanosine ... See more keywords
SYNTHESIS OF 4-ARYL(HETARYL)PYRAZOLO[1,5- a ]PYRAZINES BY PALLADIUM-CATALYZED SUZUKI–MIYAURA CROSS COUPLING
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DOI: 10.1007/5204
Abstract: 4-Бромпиразоло[1,5-a]пиразины взаимодействуют с арил(гетарил)борными кислотами при наличии каталитических количеств Pd(dppf)Cl2·CH2Cl2 и избытка Cs2CO3 в системе растворителей MeCN–H2O, 9:1 с образованием 4-арил(гетарил)пиразоло[1,5-a]пиразинов. read more here.
Keywords: pyrazolo pyrazines; hetaryl pyrazolo; palladium catalyzed; pyrazines palladium ... See more keywords
Acid-catalyzed reaction of phenols with N-(4,4-diethoxybutyl)sulfonamides – a new method for the synthesis of 2-aryl-1-sulfonylpyrrolidines
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DOI: 10.1007/s10593-017-2034-8
Abstract: We have developed a new method for the synthesis of 2-aryl-1-sulfonylpyrrolidines on the basis of reactions between various phenols and N-(4,4-diethoxybutyl)sulfonamides in the presence of trifluoroacetic acid. The structures of the obtained products were confirmed… read more here.
Keywords: phenols diethoxybutyl; new method; aryl sulfonylpyrrolidines; spectroscopy ... See more keywords
Synthesis of 4-aryl(hetaryl)pyrazolo[1,5-a]pyrazines by palladium-catalyzed Suzuki–Miyaura cross coupling
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DOI: 10.1007/s10593-019-02579-2
Abstract: 4-Bromopyrazolo[1,5-a]pyrazines react with aryl(hetaryl)boronic acids in the presence of catalytic amounts of Pd(dppf)Cl2·CH2Cl2 and an excess of Cs2CO3 in the MeCN–H2O, 9:1 solvent system with the formation of 4-aryl(hetaryl)pyrazolo[1,5-a]pyrazines. read more here.
Keywords: pyrazolo pyrazines; hetaryl pyrazolo; aryl hetaryl; synthesis aryl ... See more keywords
An eco-friendly synthesis of 4-aryl-substituted pyrano-fuzed coumarins as potential pharmacological active heterocycles using molybdenum oxide nanoparticles as an effective and recyclable catalyst
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DOI: 10.1007/s11164-018-3363-7
Abstract: A green cascade three-component reaction between 4-hydroxycoumarin, malononitrile and a wide range of arylaldehydes by employing molybdenum oxide nanoparticles (MoO3 NPs) is described. By this achievement, some medicinally important products have been successfully synthesized in… read more here.
Keywords: eco friendly; oxide nanoparticles; molybdenum oxide; friendly synthesis ... See more keywords
Regioselective synthesis of 5-aryl azo salicylaldehydes catalyzed by Zn/SBA-15
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DOI: 10.1007/s11696-019-00790-1
Abstract: Synthesis of (E)-2-hydroxy-5-(aryldiazenyl)benzaldehydes was investigated. Various Lewis acids were tested as catalyst to achieve regioselectivity. In addition to various commercial catalysts, mesoporous Zn/SBA-15 was synthesized through a modified direct method with chloride salt as zinc… read more here.
Keywords: aryl azo; synthesis; azo salicylaldehydes; regioselective synthesis ... See more keywords
Green and efficient synthesis of aryl/alkylbis(indolyl)methanes using Expanded Perlite-PPA as a heterogeneous solid acid catalyst in aqueous media
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DOI: 10.1007/s12039-017-1246-x
Abstract: AbstractExpanded Perlite-Polyphosphoric acid (EP-PPA) as a novel, efficient, recyclable and eco-benign heterogeneous catalyst has been applied for the green and rapid synthesis of aryl/alkylbis(indolyl)methanes, in water, in good to excellent yields. The catalyst was characterized… read more here.
Keywords: indolyl methanes; aryl alkylbis; catalyst; alkylbis indolyl ... See more keywords
1, 4-Diazabicyclo[2.2.2]octane-sulfonic acid immobilized on magnetic Fe3O4@SiO2 nanoparticles: a novel and recyclable catalyst for the one-pot synthesis of 4-aryl-NH-1, 2, 3-triazoles
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Chemical Sciences"
DOI: 10.1007/s12039-020-01761-w
Abstract: In this study, the surface of silica-coated magnetic nanoparticles (Fe3O4@SiO2) were successfully functionalized by an organic ligand of 1, 4-Diazabicyclo[2.2.2]octane (DABCO)-sulfonic acid and used as a highly efficient catalyst for the synthesis of 4-aryl-NH-1, 2,… read more here.
Keywords: aryl triazoles; catalyst; fe3o4 sio2; synthesis aryl ... See more keywords
Cobalt ferrite magnetic nanoparticles as highly efficient catalyst for the mechanochemical synthesis of 2-aryl benzimidazoles
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DOI: 10.1016/j.catcom.2021.106349
Abstract: Abstract A highly efficient magnetically separable nano cobalt ferrite catalyst was synthesized via the sol-gel auto combustion method, characterized by powder XRD, SEM, TEM, UV–Visible, FT-IR, magnetic study, and BET isotherm analysis. The synthesized material… read more here.
Keywords: synthesis; catalyst; cobalt ferrite; synthesis aryl ... See more keywords
Synthesis of aryl 2,2,2-trifluoroethyl sulfides
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Fluorine Chemistry"
DOI: 10.1016/j.jfluchem.2020.109464
Abstract: Abstract Aryl 2,2,2-trifluoroethyl sulfides were synthesized by copper(I)-catalyzed nucleophilic aromatic substitution reaction (Goldberg-Ullmann coupling). The method requires aryl iodides and 2,2,2-trifluoroethyl thioacetate as starting materials, benzylamine as solvent and base, and copper(I) bromide as a… read more here.
Keywords: trifluoroethyl sulfides; synthesis aryl; chemistry; aryl trifluoroethyl ... See more keywords