4-{4-[(E)-(2-Hy­droxy­phen­yl)imino­methyl]phen­oxy}benzene-1,2-di­carbo­nitrile

The asymmetric unit of the title compound, C21H13N3O2, contains two independent mol­ecules with a similar structure. In one mol­ecule, the central benzene ring is oriented with respect to the terminal benzene rings at 27.23 (7) and 67.96 (7)°; in the other mol­ecule, the corresponding dihedral angles are 12.42 (7) and 64.55 (7)°. In both molecules, there is a short O—H⋯N interaction involving the OH group and the adjacent N atom. In the crystal, there are O—H⋯N hydrogen bonds, and C—H⋯O and N—H⋯O interactions linking the molecules to form a three-dimensional network. π–π stacking between the pyridine and benzene rings and between the benzene rings [centroid–centroid distances = 3.989 (2), 3.705 (2) and 3.607 (2) Å] may further stabilize the structure. A weak C—H⋯π inter­action is present in the crystal

4-(Furan-2-ylmeth­oxy)benzene-1,2-dicarbonitrile

In the title compound, C13H8N2O2, prepared from furfuryl alcohol and 4-nitro­phthalonitrile in the presence of potassium carbonate in dimethyl­formamide, the furan and benzene rings are oriented at a dihedral angle of 53.45 (9)°. In the crystal, weak C—H⋯O and C—H⋯N hydrogen bonds link the mol­ecules into a three-dimensional network

Synthesis, structural characterization and dielectric behavior of new oxime-cyclotriphosphazene derivatives

The cyclotriphosphazene compound (2) bearing formyl groups as side groups was obtained from the reaction of 2,2-Dichloro-4,4,6,6-bis[spiro(2′,2″-dioxy-1′,1″-biphenylyl)]cyclotriphosphazene (1) with 4-hydroxy-3-methoxybenzaldehyde in the presence K2CO3 in tetrahydrofuran. Oxime-cyclotriphosphazene compound (3) was synthesized from the reaction of compound 2 with hydroxylamine hydrochloride in pyridine. The synthesized oxime-phosphazene compound (3) was reacted with alkyl and acyl halides. As a results, the cyclotriphosphazene compounds (1–10) bearing oxime ether and ester as side groups were obtained. The chemical structures of these compounds (1–10) were determined by elemental analysis, FT-IR, 1H, 13C and 31P NMR spectroscopic methods. Dielectric constant, dielectric loss factors and conductivity properties of cyclotriphosphazene compounds were measured over the frequency range from 100 Hz to 2 kHz at 25 °C and compared with each other. It is found that ester substituted cyclotriphosphazenes have higher dielectric constant. Our study suggests that these phosphazenes promising candidate materials in multifunctional optoelectronic devices.Sponsor Kurum: Fırat Üniversitesi Finansman Kodu: FF.11.2

Synthesis, structural characterization and anti-carcinogenic activity of new cyclotriphosphazenes containing dioxybiphenyl and chalcone groups

2,2-Dichloro-4,4,6,6-bis[spiro(2′,2″-dioxy-1′,1″-biphenylyl]cyclotriphosphazene (2) was synthesized from hexachlorocyclotriphosphazene (HCCP) and 2,2′-dihydroxybiphenyl. The mixed substituent chalcone/dioxybiphenyl cyclophosphazenes (2a–h) were obtained from the reactions of (2) with hydroxy chalcone compounds in K2CO3/acetone system. The chalcone-cyclophosphazene compounds were characterized by elemental analysis, FT-IR, 1H, 13C, 31P NMR techniques. In vitro anti-carcinogenic activities of all compounds were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Anti-carcinogenic activity of the compounds (2a–h) against androgen-dependent (LNCaP) and independent (PC-3) human prostate cancer cell lines were investigated. Our results indicate that the chalcone-phosphazene compounds (2a–h) have anti-carcinogenic activity on PC-3 and LNCaP cell lines (p < 0.05). The effective dose of the compounds was determined as 100 μM.Fırat Üniversites

Eu+3-doped chalcone substituted cyclotriphosphazenes: Synthesis, characterizations, thermal and dielectrical properties

A series of new cyclotriphosphazene derivatives (2a-e) were prepared from the reactions of substituted chalcone compounds (1a-e) containing different organic side groups at para position with cyclotriphosphazene (2) bearing dioxybiphenyl. The structures of 2a-e were approved by microanalysis and spectroscopic techniques (MS, FT-IR, 31P, 1H, 13C, and 13C-APT NMR). The thermal behaviors of compounds 2a-e were investigated by thermogravimetric analysis (TGA). These compounds were found to be stable up to about 300 °C. Dielectric properties of 2a-e were measured against temperature (between 25 and 160 °C at 1 kHz) and frequency (range from 100 Hz to 5 kHz at 25 °C) using means of an impedance analyzer. Among them dielectric properties of methoxy substituted cyclotriphosphazene 2e were found to be higher than other phosphazenes. The compound 2b, which has the lower dielectric property values than other phosphazenes, was selected to determine the influence of Eu+3-doping on the dielectric properties of phosphazenes and doped with Eu+3 at different mole ratios. At the dielectric properties of Eu+3-doped compound 2b (with increasing molar ratios of Eu+3) was observed an excellent increasing according to Eu+3-undoped phosphazene compounds.Sponsor Kurum: Fırat Üniversitesi Finansman Kodu: FF.12.1

Synthesis of 2-(2,3,4-trimethoxyphenyl)-1-(substituted-phenyl)acrylonitriles: In vitro anticancer activity against MCF-7, PC-3 and A2780 cancer cell lines

A series of 2-(2,3,4-trimethoxyphenyl)-1-(substituted-phenyl)acrylonitrile (2–9) were designed and synthesized to develop new cancer drugs. The structures of synthesized compounds 2–9 were described by using melting point, mass (MALDI-TOF-MS), FT-IR, elemental analysis, 1H, 13C, 13C-APT and 2D NMR spectroscopy. The in vitro anticancer activities of 2–9 against human breast cancer (MCF-7), human prostate cancer (PC-3) and human ovarian cancer cells (A2780) were investigated by [3-(4,5-dimethylthiazol)-2-yl]-2,5-diphenyl-2H-tetrazolium bromide] (MTT) assay method. Additionally, the LogIC50 values of these compounds on A2780, MCF-7 and PC-3 cell lines were calculated by using inhibition % values by the GraphPad Prism 6 program on a computer. The results indicated that these compounds have high anticancer activity against MCF-7, PC-3 and A2780 cell lines (especially A2780 cell lines, p < 0.05).Sponsor Kuruluş: TÜBİTAK Finansman Kodu: 110T65

Synthesis, characterization and dielectric properties of phosphazenes containing chalcones

The new hexasubstitue-cyclophosphazene compounds containing chalcone derivatives (2–11) were obtained from the reactions of hexachlorocyclotriphosphazene (1) with several hydroxy chalcones in K2CO3/acetone system. All products were generally obtained in high yields. The structures of the compounds were defined by elemental analysis, FT-IR, 1H, 13C and 31P NMR spectroscopy. Dielectric measurements for phosphazenes containing chalcone compounds (5–8) were carried out by means of an impedance analyzer as a function of temperature and frequency. Dielectric properties of samples prepared in a plate form were measured at room temperature over the frequency range 50 Hz to 2 kHz and given as compared with each other

(E)-1-(4-Hydroxyphenyl)-3-(substituted-phenyl)prop-2-en-1-ones: Synthesis, In Vitro Cytotoxic Activity and Molecular Docking Studies

A series of chalcone compounds (2–11) were designed and synthesized to determine their cytotoxic effects. The structures of 2–11 were fully characterized by their physical and spectral data. The in vitro cytotoxic effects of 2–11 were evaluated against human ovarian cancer (A2780), breast cancer (MCF-7) and prostate cancer (PC-3 and LNCaP) cell lines. The activity potentials of compounds were further evaluated through molecular docking studies with AutoDock4 and Vina softwares. All the compounds (except compound 5) showed significant cytotoxic effects at high doses in all cancer cell lines. Among all the compounds studied, one compound i.e. compound 2 demonstrated dose-dependent activity, particularly against A2780/LNCaP cancer cell lines. The most effective compounds 8, 9, 10 and 11 reduced the cell viability of A2780, MCF-7, PC-3 and LNCaP cells by 50–98%, while other compounds 2, 4 and 7 reduced the cell viability of A2780 cells by 70–90% at concentrations of 50 and 100 µM

Design and fabrication of dioxyphenylcoumarin substituted cyclotriphosphazene compounds photodiodes

The present study introduces cyclotriphosphazene compounds substituted by dioxyphenylcoumarin as a photodiode application. Firstly, 7,8-dihydroxy-3-(3-methylphenyl)coumarin (1b) has been obtained by conventional as well as microwave assisted methods. Novel optoelectronic device characteristics for both mono and disubstituted dioxyphenylcoumarin bearing cyclotriphosphazene compounds (HCP-2 and HCP-4) have been synthesized from the reactions of cyclotriphosphazene containing dioxybiphenyl (HCP-1 and HCP-3) with compound 1b, respectively. The structures of compounds HCP 1–4 were identified by using elemental analysis, 1H, 13C-APT, 31P NMR and 2D HETCOR NMR and FT-IR spectroscopy methods. The Al/HCP-2/p-Si/Al and Al/HCP-4/-p-Si/Al photodiodes properties have been investigated from current-voltage (I−V) and capacitance-voltage (C−V) measurements. The electrical parameters of the prepared diodes such as ideality factor n and series resistance Rs were investigated in dark and at room temperature from (I−V) curve and Nord's method. As can be seen, the Al/HCP-2/p-Si/Al diode of high rectification ratio RR and with ideality factor greater than unity. The influence of light illuminations on the diode shows that the device can be used as photodiode with good efficiency. The barrier height ϕb and series resistance Rs have been calculated from the capacitance-voltage (C−V)and conductance-voltage (G−V) measurements under various applied frequencies from 10 kHz to 1 MHz. the high difference in the results of barrier height obtained from I-V and C-V calculations confirm the influence of series resistance and localized states on transport of charge carriers and the photodiode performance.TUBITAK-110T652 Fırat University, FÜBAP-FF.161

A kinetic study of mercury(II) transport through a membrane assisted by new transport reagent

Background: A new organodithiophosphorus derivative, namely O-(1,3-Bispiperidino-2-propyl)-4-methoxy phenyldithiophosphonate, was synthesized and then the kinetic behavior of the transport process as a function of concentration, temperature, stirring rate and solvents was investigated.Results: The compound 1 was characterized by elemental analysis, IR, H-1 and P-31 NMR spectroscopies. The transport of mercury(II) ion by a zwitterionic dithiophosphonate 1 in the liquid membrane was studied and the kinetic behavior of the transport process as a function of concentration, temperature, stirring rate and solvents was investigated. The compound 1 is expected to serve as a model liquid membrane transport with mercury(II) ions.Conclusion: A kinetic study of mercury(II) transport through a membrane assisted by O-(1,3-Bispiperidino-2-propyl)4-methoxy phenyldithiophosphonate was performed. It can be concluded that the compound 1 can be provided a general and straightforward route to remove toxic metals ions such as mercury(II) ion from water or other solution