Articles with "substitution reactions" as a keyword



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Magnetic hydroxyapatite-immobilized 1,4-diazabicyclo [2.2.2] octane as a highly efficient and eco-friendly nanocatalyst for the promotion of nucleophilic substitution reactions of benzyl halides under green conditions

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Published in 2017 at "Reaction Kinetics, Mechanisms and Catalysis"

DOI: 10.1007/s11144-017-1276-x

Abstract: The synthesized magnetic inorganic–organic hybrid nanocomposite, used as a phase-transfer catalyst on the mesoporous substrate in this paper, provides a green and efficient catalytic system for nucleophilic substitution reactions of benzyl halides in water. The… read more here.

Keywords: nucleophilic substitution; microscopy; substitution reactions; spectroscopy ... See more keywords
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Axial-ligand substitution reactions of a head-to-head pivalamidato-bridged Pt(III) binuclear complex bearing equatorial bromide ligands: A mechanistic study

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Published in 2017 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2017.08.008

Abstract: Abstract Axial ligand-substitution reactions of head-to-head (HH) a binuclear pivalamidato-bridged platinum(III) complex bearing equatorial bromide ligands, [(H2O)(NH3)2Pt(μ-pivalamidato)2Pt(Br)2(OH2)]2+ (1), with chloride and bromide ions were thermodynamically and kinetically investigated in acidic aqueous solutions. Reactions of 1… read more here.

Keywords: pivalamidato; ligand substitution; substitution reactions; substitution ... See more keywords
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Substitution Reactions of Mono-, Di- and Tri-thiocarbonato Complexes of Iron

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Published in 2017 at "Polyhedron"

DOI: 10.1016/j.poly.2017.05.016

Abstract: Abstract The photolytic reactions of iron thiocarbonato complexes CpFe(CO)2SC(Y)Y′R [Y = Y′ = O; R = 2-C6H4Cl (1), 4-C6H4Cl (2); Y = S, Y′ = O; R = C6H4F (3), Y = Y′ = S; R = Ph (4)] with EPh3 (E = P, As, Sb) are performed. Monosubstituted complexes of the general formula CpFe(CO)(EPh3)SC(Y)Y′R… read more here.

Keywords: c6h4cl; mono tri; reactions mono; substitution reactions ... See more keywords
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Diastereoselective Substitution Reactions of Acyclic β-Alkoxy Acetals via Electrostatically Stabilized Oxocarbenium Ion Intermediates.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c01004

Abstract: Substitution reactions of acyclic β-alkoxy acetals proceeded with generally high diastereoselectivities (>90:10) to form the anti product. Mechanistic experiments supplemented with computational studies suggest that, upon activation of the acetal, the resulting oxocarbenium ion is… read more here.

Keywords: oxocarbenium ion; reactions acyclic; electrostatically stabilized; acyclic alkoxy ... See more keywords
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Effect of Propargylic Substituents on Enantioselectivity and Reactivity in Ruthenium-Catalyzed Propargylic Substitution Reactions: A DFT Study

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Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.2c04645

Abstract: We recently proposed a transition-state model for asymmetric propargylic substitution reactions of propargylic alcohols catalyzed by optically active thiolate-bridged diruthenium complexes [Chem. – Asian J.2021, 16, 3760−376634549529]. In the present study, we further examined the… read more here.

Keywords: enantioselectivity; substitution; propargylic substitution; group ... See more keywords
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Fast and accurate prediction of the regioselectivity of electrophilic aromatic substitution reactions† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c7sc04156j

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Published in 2018 at "Chemical Science"

DOI: 10.1039/c7sc04156j

Abstract: A fast and user-friendly computational for predicting the regioselectivity of electrophilic aromatic substitution reactions of heteroaromatic systems is presented. read more here.

Keywords: aromatic substitution; electrophilic aromatic; regioselectivity electrophilic; substitution reactions ... See more keywords
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Synthesis and ligand substitution reactions of κ4-B,S,S',S''-ruthenaboratranes.

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Published in 2018 at "Dalton transactions"

DOI: 10.1039/c8dt04278k

Abstract: A range of ruthenaboratranes of the form [Ru(CO)L{κ4-B,S,S',S''-B(mt)3}] (mt = N-methylmercaptoimidazolyl) have been prepared either by substitution of the PPh3 ligand in [Ru(CO)(PPh3){κ4-B,S,S',S''-B(mt)3}] by L (L = PMe2Ph, PMe3, P(OMe)3, P(OEt)3, P(OPh)3) or reactions of… read more here.

Keywords: ligand substitution; synthesis ligand; substitution reactions; reactions ruthenaboratranes ... See more keywords
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σ-Holes promote the concertedness in nucleophilic aromatic substitution reactions of nitroarenes

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Published in 2019 at "New Journal of Chemistry"

DOI: 10.1039/c9nj01493d

Abstract: Concertedness in SNAr may be modulated by the presence of a σ-hole. read more here.

Keywords: nucleophilic aromatic; promote concertedness; holes promote; aromatic substitution ... See more keywords
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Homo- and hetero-dinuclear Pt(II)/Pd(II) complexes: studies of hydrolysis, nucleophilic substitution reactions, DNA/BSA interactions, DFT calculations, molecular docking and cytotoxic activity.

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Published in 2020 at "Dalton transactions"

DOI: 10.1039/d0dt02906h

Abstract: Three dinuclear complexes [Pd2(tpbd)Cl2]Cl2 (PP1), [Pt2(tpbd)Cl2]Cl2 (PP2) and [PdPt(tpbd)Cl2]Cl2 (PP3) (tpbd = N,N,N',N'-tetrakis(2-pyridylmethyl)benzene-1,4-diamine) have been synthesized and characterized and the protonation constants of their corresponding diaqua analogues have been determined. Also, in water solution, the… read more here.

Keywords: dinuclear complexes; cl2; substitution reactions; dft calculations ... See more keywords
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Studies of the stability, nucleophilic substitution reactions, DNA/BSA interactions, cytotoxic activity, DFT and molecular docking of some tetra- and penta-coordinated gold(iii) complexes

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Published in 2020 at "New Journal of Chemistry"

DOI: 10.1039/d0nj02037k

Abstract: Two gold(III) complexes, square-planar [Au(DPP)Cl2]+(1) and distorted square-pyramidal [Au(DMP)Cl3] (2) (where DMP = 2,9-dimethyl-1,10-phenanthroline and DPP = 4,7-diphenyl-1,10-phenanthroline), were studied by different experimental methods. Their stability in water and in buffer solution (25 mM Hepes,… read more here.

Keywords: iii complexes; gold iii; spectroscopy; substitution reactions ... See more keywords
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Impact of substitution on reactions and stability of one-electron oxidised phenyl sulfonates in aqueous solution

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Published in 2021 at "Physical Chemistry Chemical Physics"

DOI: 10.1039/d1cp04518k

Abstract: Highly reactive aromatic cation radicals have been invoked lately in synthetic routes and in the degradation pathways of hydrocarbon-based polymers. Changes in the electron density of aromatic compounds are expected to alter the reaction pathway… read more here.

Keywords: substitution reactions; impact substitution; degradation; one electron ... See more keywords