Browsing by Author "Hosgören, H"
Now showing items 1-20 of 20
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Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(-)-1-phenyl-ethyl ammonium percholorate
Özbey, S; Kaynak, FB; Togrul, M; Demirel, N; Hosgören, H (R Oldenbourg Verlag, 2003)A new type of inclusion complex, S(-)-1 phenyl ethyl ammonium percholorate complex of R-(-)-2-ethyl-N-benzyl-4,7,10,13-tetraoxa-1-azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray ... -
Effect of 1,3-diol structure on the distribution of boron between CHCl3 and aqueous phase
Karakaplan, M; Tural, S; Sunkür, M; Hosgören, H (Marcel Dekker Inc, 2003)The various new aliphatic 1,3-diols, containing primary, secondary, tertiary, and mixed of these groups, were synthesized and used for the solvent extraction of boron. Diols (8a, 8b, 9, 10a, 10b, 11, 12a, 12b, 13) were ... -
The effect of benzo substitution on complexation of diaza 18-crown-6 ethers derivatives with NaClO4
Köylü, MZ; Demirel, N; Polat, FD; Yilmaz, A; Hosgören, H; Balci, M (Springer, 2005)The complexation of the crown ethers with Na+ ion was studied. H-1-NMR chemical shifts are discussed in terms of structural modi. cation as well as also binding studies with UV-vis spectra were included. -
Effect of long-chain amines on the extraction of boron from CaCl2 brine with CTMP in petroleum benzine
Yurdakoç, M; Karakaplan, M; Hosgören, H (Marcel Dekker Inc, 1999)The effect of TOA (tri-n-octylamine), TOMA (tri-n-octylmethylammonium iodide), DEDA (N,N'-didodecylethylenediamine), DEDMA (N,N'-didodecyl-N,N'-tetramethylethylene-diammonium diiodide), and NDM (N-dodecylmorpholine) upon ... -
The enantiomeric recognition of chiral organic ammonium salts by chiral monoaza-15-crown-5 ether derivatives
Turgut, Y; Sahin, E; Togrul, M; Hosgören, H (Pergamon-Elsevier Science Ltd, 2004)Novel chiral monoaza-15-crown-5 ether derivatives 1 and 2 were prepared frorn L-phenylalaninol and L-leucinol, respectively. The effect of the substituent at the stereogenic center on chiral recognition and enantioselectivity ... -
Enantioselective transport of amino acids as their potassium and sodium salts by optically active diaza-18-crown-6 ethers having arene sidearms
Demirel, N; Bulut, Y; Hosgören, H (Pergamon-Elsevier Science Ltd, 2004)The enantioselective transport of amino acids as their sodium and potassium salts has been investigated by optically active diaza crown ethers. The reversed enantioselectivity of chiral crown ether 1 was observed. (C) 2004 ... -
New copper(II), manganese(III), nickel(II) and zinc(II) complexes with a chiral quadridentate Schiff base
Temel, H; Hosgören, H (Springer, 2002)A chiral Schiff base ligand (H2L) was obtained by condensing 2-hydroxynaphthalene-1-carbaldehyde with substituted (1R,2R)-(-)-diaminocyclohexane. Chiral Schiff base complexes [CuL], [NiL], [ZnL] and [MnLOH] have been ... -
A practical synthesis of chiral 3-aryloxy-1,2-propanediols
Karakaplan, M; Turgut, Y; Hosgören, H (Science Reviews 2000 Ltd, 2005)Chiral 3-aryloxy-1,2-propanediols (1-5) of > 96% ee were obtained in high yield by the nucleophilic addition of substituted phenols to chiral glycidol in the presence of piperidine hydrochloride as catalyst. -
Saligenin derivative borocryptands
Togrul, M; Sünkür, M; Kaynak, FB; Hosgören, H; Özbey, S (Science Reviews Ltd, 2003)A new lithium receptor based on the combination of the [11] macrocyclic core and two 4-tert-butyl saligenin units was designed and prepared. -
The solvent extraction of boron with synthesized aliphatic 1,3-diols
Karakaplan, M; Tural, S; Tural, B; Turgut, Y; Hosgören, H (Taylor & Francis Inc, 2004)A variety of aliphatic 1,3-diols (4a-c, 5a-c, 6a-c) was synthesized from beta-hydroxy carbonyl compounds (1-3) for potential use in the solvent extraction of boron. Primary-secondary and primary-tertiary alcohol structures ... -
Synthesis and characterization of Na+ and Ba2+ complexes with some lipophilic diaza-18-crown-6 derivatives
Temel, H; Hosgören, H; Çakir, Ü; Boybay, M (Springer, 1998)The solid and stable Na+ and Ba2+ complexes of 7,16-Dibenzyl-4,7,10,13-tetraoxa-7, 16-diazacyclooctadecane; 7, 16-Dihexyl-4,7,10,13-tetraoxa-7,16-diazacyclooctadecane; 7,16-Dihep-tyl-4,7,10,13-tetraoxa-7,16-diazacyclootadecane, ... -
Synthesis and characterization of Na+, K+, Ca2+, Ba2+, Sr2+, and Pb2+ complexes with some lipophilic diaza-18-crown-6 derivatives
Temel, H; Hosgören, H; Boybay, M (Marcel Dekker Inc, 2002)In this study, the complexes of 7,16-Dibenzyl-4,7,10,13-tetraoxa-7,16-diazacyclooctadecane; 7,16-Dihexzyl-4,7,10,13tetraoxa-7,16-diazacyclooctadecane; 7,16-Diheptyl-4,7,10,13tetraoxa-7,16-diazacyclooctadecane; 7,16-Dioct ... -
Synthesis and complexation of new substituted dibenzodiaza macrocyclic diester compounds
Topal, G; Temel, H; Çakir, Ü; Ugras, HI; Karadeniz, F; Hosgören, H (Taylor & Francis Inc, 2002)The synthesis of some new precoursers that contain substituted benzo units and their use in the preparation of azama-crocyclic diester compounds are reported. These precoursers and ligands were characterized by Elemental ... -
Synthesis of chiral crown ethers and complexation with chiral protonated amine compounds
Togrul, M; Demirel, N; Kaynak, FB; Özbey, S; Hosgören, H (Springer, 2004)The X-ray crystal structure of IX, perchlorate salt of R-(-)-2-ethyl-N-benzyl-4,7,19,13-tetraoxa-8,9-benzo-1-azacyclopentadec-8-ene has been determined. In the molecule, the protonated nitrogen atom participates in two ... -
Synthesis of chiral monoaza-15-crown-5 ethers from L-valinol and the enantiomeric recognition of chiral amines and their perchlorates salts
Turgut, Y; Hosgören, H (Pergamon-Elsevier Science Ltd, 2003)A practical synthesis of chiral monoaza-15-crown-5 ethers I and 2 has been achieved from L-valinol. The molecular recognition by these chiral crown ethers for (RS)-alpha-phenylethylamine, (RS)-alpha-(1-naphthyl)ethylamine ... -
Synthesis of new chiral diaza 18-crown-6 ethers from chiral amines
Demirel, N; Turgut, Y; Hosgören, H (Science Reviews 2000 Ltd, 2003)Practical syntheses of versatile building blocks of crown ethers 1 and 2, chiral amine precursors 3-6 and chiral diaza 18-crown-6 ethers 7-12 are reported starting from chiral amines. -
Synthesis of novel chiral C2-symmetric diaza-18-crown-6 ether derivatives and their enantioselective recognition of amino acid derivatives
Turgut, Y; Demirel, N; Hosgören, H (Springer, 2006)New chiral diaza-18-crown-6 ether derivatives, 5 and 6 were synthesized from (R)-(-)-2-amino-1-butanol. These chiral artificial receptors exhibit pronounced chiral recognition toward the enantiomers of L- and D- amino acid ... -
Synthesis of novel chiral monoaza-15-crown-5 ethers and their molecular recognition of amino acid esters
Turgut, Y; Isgin, ES; Hosgören, H (Science Reviews 2000 Ltd, 2004)The chiral monoaza-15-crown-5 ethers 4 and 5 were prepared from L-phenylalaninol and L-leucinol, respectively. The molecular recognition of these chiral crown ethers for L-amino acid ethyl esters was characterised by ... -
Synthesis of R-(-)-2-ethyl-N-benzyl (benzo-monoaza-15-crown-5) and the crystal structure of its sodium perchlorate complex
Özbey, S; Kaynak, FB; Togrul, M; Demirel, N; Hosgören, H (Springer, 2003)A new complex of a chiral monoaza-crown ether, [R-(-)-2-ethyl-N-benzyl-4,7,10,13-tetraoxa-8,9-benzo-1-azacyclopentadec-8-ene.NaClO4], has been prepared and studied by x-ray diffraction. The compound crystallizes in space ... -
Synthesis of R-(-)-2-ethyl-N-benzyl (monoaza-15-crown-5) and the crystal structure of its sodium perchlorate complex
Özbey, S; Hosgören, H; Turgut, Y; Topal, G (Springer, 2001)A new complex of a chiral monoaza-crown ether, [R-(-)-2-ethyl-N-benzyl-4,7,10,13-tetraoxa-1-azacyclopentadeceane) NaClO4], has been prepared and studied by x-ray diffraction. The compound crystallizes in space group P2(1) ...
