Yazar "Yildiz, Y. Kemal" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    Incorporation of an allene unit into 1,4-dihydronaphthalene: generation of 1,2-benzo-1,4,5-cycloheptatriene and its dimerization
    (PERGAMON-ELSEVIER SCIENCE LTD, 2007) Azizoglu, Akin; Demirkol, Onur; Kilic, Turgut; Yildiz, Y. Kemal
    1-Bromo-1-fluoro-[1a,2,7,7a]-tetrahydro-1H-cyclopropa[b]naphthalene (19) has been prepared by the addition of bromolluoro-carbene to 1,4-dihydronaphthalene (18). Treatment of a solution of 19 in dry ether with MeLi afforded the tricyclic hydrocarbon 17, resulting from the intramolecular C-H insertion of carbene 16, and two dimerization products, the head-to-head 20 and head-to-tail 21 allene dimers, confirming the formation of title cycloallene 15 as a reactive intermediate. B3LYP/6-31 G(d) calculation predicts the activation barriers for insertion product 17 and allene product 15 as 3.70 and 9.52 kcal/mol, respectively. This prediction was in good agreement with our experimental results. (c) 2007 Elsevier Ltd. All rights reserved.
  • Küçük Resim Yok
    Öğe
    Synthesis and Characterization of New vic-Dioximes with Benzo-15-crown-5 Derivatives and Their Nickel(II), Copper(II), Cobalt(II) Complexes
    (ASIAN JOURNAL OF CHEMISTRY, 2012) Battaloglu, Rifat; Pekacar, A. Ihsan; Yildiz, Y. Kemal
    Benzo-15-crown-5-p-toluidino-glyoxime (1) and N(1-naphthy)amino-benzo-15-crown-5-glyoxime (2) were synthesized by classical methods. Their structures were confirmed by spectral techniques. Both of them were capable of forming complexes with various metal ions (Co2+, Cu2+ and Ni2+). The structure of the complexes was confirmed by FT-IR, mass spectra and elemental analyses.