Articles with "new bis" as a keyword



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Preparation and characterization of a new bis-layered supported ionic liquid catalyst (SILCA) with an unprecedented activity in the Heck reaction

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Published in 2019 at "Journal of Catalysis"

DOI: 10.1016/j.jcat.2019.01.029

Abstract: A new bis-layered supported ionic liquid catalyst (SILCA) loaded with palladium was designed and successfully applied for the Heck reaction of iodobenzene and methyl acrylate. The silica modified c ... read more here.

Keywords: ionic liquid; layered supported; bis layered; supported ionic ... See more keywords
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Electrochemical and quantum chemical evaluation of new bis(coumarins) derivatives as corrosion inhibitors for carbon steel corrosion in 0.5 M H2SO4

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Published in 2018 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2018.01.148

Abstract: Abstract Four new bis(coumarin) compounds were prepared and their structures were confirmed using elemental analysis FTIR, 1H NMR and mass spectroscopy. The corrosion inhibition tendencies of the prepared compounds were investigated in inhibiting the carbon… read more here.

Keywords: steel corrosion; quantum chemical; new bis; carbon steel ... See more keywords
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Coordination behavior of new bis(tridentate ONO, ONS and ONN) donor hydrazones towards some transition metal ions: Synthesis, spectral, thermal, antimicrobial and antitumor studies

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Published in 2017 at "Journal of Molecular Structure"

DOI: 10.1016/j.molstruc.2016.08.056

Abstract: Abstract Three new hydrazone ligands, H 2 L 1 , H 2 L 2 and H 4 L 3 , were prepared by condensation of 4,6-bis(1-hydrazonoethyl)benzene-1,3-diol with furan-2-carboxaldehyde, thiophene-2-carboxaldehyde and 1H-pyrrole-2-carboxaldehyde, respectively. The ligands reacted… read more here.

Keywords: coordination behavior; new bis; behavior new; metal ... See more keywords
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Two new bis-C20-diterpenoid alkaloids with anti-inflammation activity from Aconitum bulleyanum

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Published in 2019 at "Journal of Asian Natural Products Research"

DOI: 10.1080/10286020.2018.1439024

Abstract: Abstract Two new bis-C20-diterpenoid alkaloids, bulleyanines A and B (1 and 2), were isolated from Aconitum bulleyanum. Their structures were elucidated by comprehensive spectroscopic analyses including UV, IR, MS, 1D and 2D NMR. Biological activity… read more here.

Keywords: diterpenoid alkaloids; new bis; two new; c20 diterpenoid ... See more keywords
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Some new bis-1,4 pentazadienes: synthesis and photochemical properties

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Published in 2018 at "Molecular Crystals and Liquid Crystals"

DOI: 10.1080/15421406.2018.1542109

Abstract: Abstract The synthesis of some new bis-1,4-pentazadienes and their photolytic decomposition are described. The uniformity of photolysis reactions is studied by the AD-diagram method. It was found that the photolysis on the later stages does… read more here.

Keywords: bis pentazadienes; synthesis photochemical; pentazadienes synthesis; new bis ... See more keywords
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Polymorphism in some new bis-hydrazone compounds.

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Published in 2018 at "Acta crystallographica. Section C, Structural chemistry"

DOI: 10.1107/s2053229618014286

Abstract: We describe the polymorphism of four new bis-hydrazone compounds, namely butane-2,3-dione 2,3-bis{[bis(4-fluorophenyl)methylidene]hydrazone}, C30H22F4N4 (1), butane-2,3-dione 2,3-bis{[bis(4-chlorophenyl)methylidene]hydrazone}, C30H22Cl4N4 (2), butane-2,3-dione 2,3-bis{[bis(4-methylphenyl)methylidene]hydrazone}, C34H34N4 (3), and butane-2,3-dione 2,3-bis({bis[4-(dimethylamino)phenyl]methylidene}hydrazone), C38H46N8 (4), derived by the condensation reaction between substituted benzophenone… read more here.

Keywords: butane dione; new bis; bis; hydrazone ... See more keywords
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New bis 1,3,4-oxadiazole derivatives: syntheses, characterizations, computational studies, and antioxidant activities

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Published in 2018 at "Canadian Journal of Chemistry"

DOI: 10.1139/cjc-2018-0101

Abstract: In this study, two new bis oxadiazole derivatives (2a and 2b) were synthesized. The new compounds were characterized by elemental analyses, IR, 1H NMR, 13C NMR, and mass spectral studies and were tested for their… read more here.

Keywords: oxadiazole derivatives; new bis; bis oxadiazole; characterizations computational ... See more keywords
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New Bis-Cyclometalated Iridium(III) Complexes with β-Substituted Porphyrin-Arylbipyridine as the Ancillary Ligand: Electrochemical and Photophysical Insights

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Published in 2022 at "International Journal of Molecular Sciences"

DOI: 10.3390/ijms23147606

Abstract: An efficient synthetic access to new cationic porphyrin-bipyridine iridium(III) bis-cyclometalated complexes was developed. These porphyrins bearing arylbipyridine moieties at β-pyrrolic positions coordinated with iridium(III), and the corresponding Zn(II) porphyrin complexes were spectroscopically, electrochemically, and electronically… read more here.

Keywords: bis cyclometalated; new bis; iridium iii; iii complexes ... See more keywords
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Preparation, structure elucidation, and antioxidant activity of new bis(thiosemicarbazone) derivatives

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Published in 2020 at "Turkish Journal of Chemistry"

DOI: 10.3906/kim-2002-76

Abstract: Schiff-base–bearing new bis(thiosemicarbazone) derivatives were prepared from terephthalaldehyde and various thiosemicarbazides. FT–IR, 1H NMR, 13C NMR, and UV–Vis spectroscopic methods and elemental analysis were used to elucidate the identification of the synthesized molecules. The in… read more here.

Keywords: antioxidant activity; bis thiosemicarbazone; new bis; thiosemicarbazone derivatives ... See more keywords