Yazar "Yavuz, Mustafa" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Resolution of trans-2-azidocycloalkanols by separation of their mandelic acid esters
    (Pergamon-Elsevier Science Ltd, 2023) Yesil, Tolga A.; Yavuz, Mustafa; Erturk, Erkan
    It is presented that resolution of (+/-)-trans-2-azidocylohexanol and (+/-)-trans-2-azidocyclooctanol can be effected with (R)-mandelic acid. (R)-Mandelate esters of these azido alcohols can be separated by column chromatog-raphy on silica gel in an efficient manner. Upon methanolysis (transesterification) of the diastereomerically pure (R)-mandelate esters by K2CO3, enantiomerically pure trans-2-azidocylohexanols and trans-2-azidocyclooctanols are obtained. Their synthetic relevance has been also demonstrated by subjecting them to some enantiospecific transformations, such as the Mitsunobu reaction and hydrogenolysis of the azide functionality. Notably, this is the first study reporting the preparation of enantiopure trans-2-azidocyclooctanols.
  • [ X ]
    Öğe
    Synthesis, Characterization and Investigation of Electrical Conductivity of Poly(2-Oxo-2-Phenyl Ethyl -2-Amino Benzoate)/Bentonite Nanocomposite
    (2022) Yeşil, Tolga Acar; Dilek, Omer; Tilki, Tahir; Yavuz, Mustafa
    This study was carried out in two stages. In the first stage; 2-oxo-2-phenylethyl-2-aminobenzoate (OPA) compound, which was an aniline derivative, was synthesized by starting the appropriate components. Then, poly(OPA) was obtained via chemical polymerization of the OPA in the presence of ammonium peroxydisulfate (APS) as the initiator and DMF as the solvent. Poly(OPA)/Bentonite (BNT) nanocomposite was synthesized by effectively dispersing the inorganic nanolayers of BNT in poly(OPA) matrix by means of intercalation method. In the second stage; the characterization of the synthesized OPA, poly(OPA) and poly(OPA)/BNT nanocomposite was investigated. The OPA was characterized by liquid chromatography mass spectrometry (LC/TOF-MS). The structures of the poly(OPA) and nanocomposite(OPA) were characterized by using Fourier Transform Infrared Spectroscopy (FTIR), thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM). In addition, the conductivity of poly(OPA)/BNT nanocomposite was investigated and change in electrical conductivity was examined.