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Synthesis of an Anionic Receptor Based on phenylhydrazone Group and Its Recognition Property for Acetate

Chinese Journal of Chemistry 2007年第10期25卷 1430-1433页

作者：王月红林海林华宽 Department of Chemistry Nankai University Tianjin 300071 China Key Laboratory of Functional Polymer Materials of Ministry of Education Nankai University Tianjin 300071 China

A colorimetric anion receptor was synthesized by a simple method where the phenylhydrazone moiety was need as binding sites. The anion recognition via hydrogen-bonding interactions can be easily monitored by anion complexation induced changes in UV-vis absorption spectra. Moreover, the hydrogen bond formation between the phenylhydrazone N-H and acetate or fluoride anion was described on the basis of ^1H NMR experiments.

关键词： receptor phenylhydrazone anion colorimetric recognition hydrogen bond

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Lignin-phenylhydrazone as a Corrosion Inhibitor of API X52 Carbon Steel in 3.5%NaCl and 0.1 mol/L HCl Medium

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Chemical Research in Chinese Universities 2021年第3期37卷 718-728页

作者： Nabila AISSIOU Moussa BOUNOUGHAZ Amel DJEDDI Bougara Boumerdes35000Algeria UniversitéM’hamed Bougara Facultédes SciencesBoumerdes35000Algeria

The best alternative to fight against corrosion is the use of an inhibitor,the purpose of this work is the formulation of a new biomass-based molecule against corrosion of carbon *** was extracted using the Kraft process and phenylhydrazine molecules have been *** influence of the lignin-phenyl-hydrazone(LP)on the corrosion of carbon steel in salt and the acidic medium was studied by the polarization resistance,the potentiodynamic polarization,and the electrochemical impedance *** results of these tests reveal that the behavior of the inhibitor is a mixed *** adsorption mechanism of the inhibitor follows the Langmuir isothermal *** energy shows that the process of inhibition of carbon steel is *** SEM confirms that the inhibitor reduces the corrosion of the steel and stops the corrosion pitting *** modified lignin shown as a good corrosion inhibitor in acid medium is highly saline with an efficiency>96%.

关键词： Kraft Lignin phenylhydrazone Corrosion inhibitor Corrosion pitting Electrochemical Impedance

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Synthesis of Antipyrine Derivatives Derived from Dimedone

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Chinese Journal of Chemistry 2007年第4期25卷 570-573页

作者： EIASHRY E. S. H. AWAD L. F. IBRAHIM E. I. BDEEWY O. Kh. Chemistry Department Faculty of Science Alexandria University Alexandria Egypt Suez Cannel University lsmailia Egypt

Coupling of dimedone with the diazonium salt of 4-aminoantipyrine afforded 2,3-dimethyl-4-[2-（5,5-dimethyl- 2,6-dioxocyclohex-2-ylidend）-hydrazino]-5-oxo-1-phenylpyrazoline （3）. Reaction of 3 with excess phenylhydrazine gave the mixed trishydrazone derivative 4. Treatment of 3 with hydroxylamine produced the bisoxime 5 which upon dehydrative cyclization with acetic anhydride gave the corrsponding tetrahydrobenzo[d][1,2,3]triazole derivative 7. A one-pot synthesis of 7 was done by reacting 3 with hydroxylamine hydrochloride in pyridine, followed by heatment with acetic anhydride.

关键词： dimedone antipyrine 1,2,3-triazole phenylhydrazone

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Crystal and Molecular Structure of Ethyl 2-[(4-Hydroxy-phenyl)hydrazono]-3-oxobutanoate

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Chinese Journal of Structural Chemistry 2011年第2期30卷 186-189页

作者： Gnanasekaran Rajalakshmi Poomani Kumaradhas Mahesh Padaki Arun M Isloor Chitrakara Hegede Balasubramanium Sridhar Department of Physics Periyar University Department of Chemistry National Institute of Technology-Karnataka Department of Chemistry NITTE Meenakshi Institute of Technology Laboratory of X-ray Crystallography Indian Institute of Chemical Technology

The title compound,C 12 N 2 O 4 H 14 （M r=250.3）,crystallizes in triclinic P1 space group with a=7.7709（9）,b=8.7534（11）,c=9.6958（12）,α=77.103（2）,β=80.496（2）,γ=86.726（2）o,V=633.9（1） 3,Z=2,F（000）=264,D c=1.311 Mg/m 3,μ（MoKα）=0.1 mm-1,the final R=0.056,and wR=0.15 for 2239 observed reflections （I 2σ（Ⅰ））.The molecules in the crystal are linked through O-H···O type of hydrogen bonding interaction forming an infinite chainlike *** phenylhydrazone ring and oxobutanoate groups are almost *** keto hydrazo group adopts a Z-configuration in the molecule and the torsion angle is-177.6（2）°.

关键词： molecular structure oxobutanoate phenylhydrazone Z-configuration hydrogen bonding

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