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Browsing by Subject "proton nuclear magnetic resonance"

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    • Article  

      Amphiphilic diblock and ABC triblock methacrylate copolymers: Synthesis and aqueous solution characterization 

      Triftaridou, Aggeliki I.; Vamvakaki, Maria; Patrickios, Costas S. (2002)
      Three isomeric, linear, equimolar, amphiphilic ABC triblock copolymers comprising methyl methacrylate (MMA, nonionic hydrophobic), 2-(dimethylamino)ethyl methacrylate, (DMAEMA, ionizable hydrophilic) and hexa(ethylene ...

    • Article  

      Amphiphilic model conetworks based on cross-linked star copolymers of benzyl methacrylate and 2-(dimenthylamino)ethyl methacrylate: Synthesis, characterization, and DNA adsorption studies 

      Achilleos, Demetra S.; Georgiou, Theoni K.; Patrickios, Costas S. (2006)
      Six amphiphilic model conetworks of a new structure, that of cross-linked "in-out" star copolymers, were synthesized by the group transfer polymerization (GTP) of the hydrophobic monomer benzyl methacrylate (BzMA) and the ...

    • Article  

      Concerted Diels-Alder reaction between anthracene and C60 

      Chronakis, Nikos; Orfanopoulos, Michael (2001)
      The Diels-Alder reaction of anthracene with C60 has been investigated experimentally by using secondary isotope effects. The inverse α-secondary isotope effect in conjunction with the unity value of the β-secondary isotope ...

    • Article  

      Controlled synthesis of homopolymers and block copolymers based on 2-(acetoacetoxy)ethyl methacrylate via RAFT radical polymerisation 

      Krasia-Christoforou, T.; Soula, R.; Börner, H. G.; Schlaad, H. (2003)
      Reversible addition-fragmentation chain transfer (RAFT) radical polymerisation enables to synthesise well-defined homopolymers and block copolymers based on 2-(acetoacetoxy)ethyl methacrylate, which are capable to strongly ...

    • Article  

      The conversion of 2-(4-chloro-5H-1,2,3-dithiazolylideneamino)benzonitriles into 3-aminoindole-2-carbonitriles using triphenylphosphine 

      Michaelidou, Sophia S.; Koutentis, Panayiotis Andreas (2009)
      2-(4-Chloro-5H-1,2,3-dithiazolylideneamino)benzonitrile 1a reacts with triphenylphosphine (4 equiv) in the presence of water (2 equiv) to afford anthranilonitrile 2a, 3-aminoindole-2-carbonitrile 3a and (2-cyanoindol-3-y ...

    • Article  

      The conversion of 2-cyano cyanothioformanilides into 3-aminoindole-2- carbonitriles using triphenylphosphine 

      Koutentis, Panayiotis Andreas; Michaelidou, Sophia S. (2010)
      2-Cyano cyanothioformanilide 3a reacts with triphenylphosphine in the presence of water to give 2-(cyanomethyleneamino)benzonitrile 4a, 2-(cyanomethylamino)benzonitrile 5, 3-aminoindole-2-carbonitrile 2a and (2-cyanoindo ...

    • Article  

      The conversion of isothiazoles into pyrazoles using hydrazine 

      Ioannidou, Heraklidia A.; Koutentis, Panayiotis Andreas (2009)
      The conversion of isothiazoles into pyrazoles on treatment with hydrazine is investigated. The influence of various C-3, C-4 and C-5 isothiazole substituents and some limitations of this ring transformation are examined. ...

    • Article  

      Formation of oligotriazoles catalysed by cucurbituril 

      Krasia-Christoforou, T.; Steinke, J. H. G. (2002)
      The catalytic activity of cucurbituril in 1,3-dipolar cycloadditions has been applied to the synthesis of oligotriazoles.

    • Article  

      In vivo high-resolution magic angle spinning magnetic resonance spectroscopy of Drosophila melanogaster at 14.1 T shows trauma in aging and in innate immune-deficiency is linked to reduced insulin signaling 

      Righi, V.; Apidianakis, Yiorgos; Mintzopoulos, D.; Astrakas, L.; Rahme, L. G.; Tzika, A. A. (2010)
      In vivo magnetic resonance spectroscopy (MRS), a non-destructive biochemical tool for investigating live organisms, has yet to be used in the fruit fly Drosophila melanogaster, a useful model organism for investigating ...

    • Article  

      In vivo high-resolution magic angle spinning proton NMR spectroscopy of Drosophila melanogaster flies as a model system to investigate mitochondrial dysfunction in Drosophila GST2 mutants 

      Righi, V.; Apidianakis, Yiorgos; Psychogios, N.; Rahme, L. G.; Tompkins, R. G.; Tzika, A. A. (2014)
      In vivo nuclear magnetic resonance spectroscopy (NMR), a non-destructive biochemical tool used for investigating live organisms, has recently been performed in studies of the fruit fly Drosophila melanogaster, a useful ...

    • Article  

      Inhibition of mitogen-activated protein kinase (MAPK) and cyclin-dependent kinase 2 (Cdk2) by platinum(II) phenanthroline complexes 

      Child, E. S.; Georgiades, Savvas N.; Rose, K. N.; Stafford, V. S.; Patel, C. B. K.; Steinke, J. H. G.; Mann, D. J.; Vilar, R. (2011)
      Inhibition of protein kinases in the fight against disease remains a constant challenge for medicinal chemists, who have screened multitudes of predominantly planar organic scaffolds, natural and synthetic, to identify ...

    • Article  

      A new [2 + 2] functionalization of C60 with alkyl-substituted 1,3- butadienes: A mechanistic approach. Stereochemistry and isotope effects 

      Vassilikogiannakis, G.; Chronakis, Nikos; Orfanopoulos, Michael (1998)
      The stereochemistry and secondary isotope effects of the [2 + 2] photocycloaddition of trans,trans- (7), cis,cis- (8), and cis,trans-2,4- hexadiene (9), 2,5-dimethyl-2,4-hexadiene (1), and its deuterated analogues 1-d1, ...

    • Article  

      NMR and theoretical investigations on the structures and dynamics of octahedral bis(chelate)dichloro VIII compounds isolated by an unusual reduction of non-oxo VIV species 

      Rikkou, Maria P.; Manos, Manolis J.; Tolis, Evangelos I.; Sigalas, Michael P.; Kabanos, Themistoklis A.; Keramidas, Anastasios D. (2003)
      Reaction of the non-oxo VIV species [VIVCl2(LOO)2] [LOO = acetylacetonate (acac-) or benzoylacetonate (bzac-)] with a chelate nitrogen-donor ligand LNN in acetonitrile leads to the reduction of VIV to VIII and the formation ...

    • Article  

      Novel mixed metal Ag(I)-Sb(III)-metallotherapeutics of the NSAIDs, aspirin and salicylic acid: Enhancement of their solubility and bioactivity by using the surfactant CTAB 

      Gkaniatsou, E. I.; Banti, Christina N.; Kourkoumelis, Nikolaos; Skoulika, S.; Manoli, Maria; Tasiopoulos, Anastasios J.; Hadjikakou, Sotiris K. (2015)
      The already known Ag(I)-Sb(III) compound of the formula {Ag(Ph3Sb)3(NO3)} (1) and two novel mixed metal Ag(I)-Sb(III) metallotherapeutics of the formulae {Ag(Ph3Sb)3(SalH)}(2) and {Ag(Ph3Sb)3(Asp)}(3) (SalH2 = salicylic ...

    • Article  

      The preparation and characterization of 5-substituted-4-chloro-1,2,3- dithiazolium salts and their conversion into 4-substituted-3-chloro-1,2,5- thiadiazoles 

      Koutentis, Panayiotis Andreas (2005)
      A series of monosubstituted acetonitriles were treated with disulfur dichloride at room temperature in CH2Cl2 to afford 5-substituted-4-chloro-1,2,3-dithiazolium chlorides 1. Where the 5-substituent was not a good leaving ...

    • Article  

      Reinvestigating the reaction of 1H-pyrazol-5-amines with 4,5-dichloro-1,2,3-dithiazolium chloride: A route to pyrazolo[3,4-c]isothiazoles and pyrazolo[3,4-d]thiazoles 

      Koyioni, Maria G.; Manoli, Maria; Manolis, M. J.; Koutentis, Panayiotis Andreas (2014)
      The reaction of Appel salt 1 with 1H-pyrazol-5-amines 2 gives main products N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-1H-pyrazol-5-amines 3, and 6H-pyrazolo[3,4-c]isothiazole-3-carbonitriles 5, together with several minor ...

    • Article  

      Reinvestigating the synthesis of N-arylbenzamidines from benzonitriles and anilines in the presence of AlCl3 

      Koutentis, Panayiotis Andreas; Mirallai, Styliana I. (2010)
      The preparation of N-phenylbenzamidine 3a from the reaction between benzonitrile Ia and aniline in the presence of AId3 is reinvestigated with respect to mode of reagent addition, reaction temperature and Lewis acid ...

    • Article  

      Ring transformations of 2-hydroxy-(4-chloro-5H-1,2,3-dithiazol-5-ylideneamino)arenes 

      Kalogirou, Andreas S.; Michaelidou, Sophia S.; Koyioni, Maria G.; Koutentis, Panayiotis Andreas (2015)
      Abstract The cyclisation reactions of 2-(4-chloro-5H-1,2,3-dithiazol-5-ylidene-amino)phenol (5a), 3-(4-chloro-5H-1,2,3-dithiazol-5-ylideneamino)pyridin-2-ol (5b) and 2-(4-chloro-5H-1,2,3-dithiazol-5-ylideneamino)pyridin-3-ol ...

    • Article  

      Superhelices of poly[2-(acetoacetoxy)ethyl methacrylate] 

      Schlaad, H.; Krasia-Christoforou, T.; Antonietti, M. (2004)
      Poly[2-(acetoacetoxy) ethyl methacrylate] (PAEMA) homopolymers were found to self-assemble into hierarchical superstructures, that is, double-stranded helical tubes of either screw sense (scanning force microscopy). Both ...

    • Article  

      Synthesis and aqueous solution characterization of amphiphilic diblock copolymers containing carbazole 

      Krasia-Christoforou, T.; Patrickios, C. S. (2002)
      A series of near-monodisperse diblock copolymers of 2-(N-carbazolyl)ethyl methacrylate and 2-(dimethylamino)ethyl methacrylate (DMAEMA) of relatively low molecular weights (2600-24,000 g mol-1) were synthesized by group ...

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