Synthesis and Characterization of Polypyrrole Film Doped with Both Molybdate and Salicylate and Its Application in the Corrosion Protection for Low Carbon Steel.

Polypyrrole (PPy) films doped with molybdate and salicylate have been successfully electropolymerized on low carbon steel in aqueous solutions containing both molybdate and salicylate in a one-step process that did not require any pre-treatment of the steel substrate. Salicylate-doped PPy films were synthesized in the same way for comparison. The steel surface was rapidly inhibited and the PPy-based films were formed on it easily.

Synthesis and structure of ()--(4-meth-oxy-phen-yl)-2-[4-(3-oxo-3-phenyl-prop-1-en-1-yl)phen-oxy]acetamide.

The title compound -(4-meth-oxy-phen-yl)-2-[4-(3-oxo-3-phenyl-prop-1-en-1-yl)phen-oxy]acetamide, CHNO, was prepared from reaction of -(4-meth-oxy-phen-yl)-2-chloro-acetamide and ()-3-(4-hy-droxy-phen-yl)-1-phenyl-prop-2-en-1-one, which was obtained from the reaction of 4-hy-droxy-benzaldehyde and aceto-phenone. The structure of the title compound was determined by IR, H-NMR, C-NMR and HR-MS spectroscopic data and further characterized by single-crystal X-ray diffraction. The asymmetric unit contains four mol-ecules, each displaying an -configuration of the C=C bond.

Synthesis, structure and in vitro cytotoxicity testing of some 2-aroylbenzofuran-3-ols.

Five 2-aroyl-5-bromobenzo[b]furan-3-ol compounds (two of which are new) and four new 2-aroyl-5-iodobenzo[b]furan-3-ol compounds were synthesized starting from salicylic acid. The compounds were characterized by mass spectrometry and H NMR and C NMR spectroscopy. Single-crystal X-ray diffraction studies of four compounds, namely, (5-bromo-3-hydroxybenzofuran-2-yl)(4-fluorophenyl)methanone, CHBrFO, (5-bromo-3-hydroxybenzofuran-2-yl)(4-chlorophenyl)methanone, CHBrClO, (5-bromo-3-hydroxybenzofuran-2-yl)(4-bromophenyl)methanone, CHBrO, and (4-bromophenyl)(3-hydroxy-5-iodobenzofuran-2-yl)methanone, CHBrIO, were also carried out.

Synthesis and structure of ethyl 2-[(4-oxo-3-phenyl-3,4-di-hydro-quinazolin-2-yl)sulfan-yl]acetate.

The title compound, CHNOS, was synthesized by reaction of 2-mercapto-3-phenyl-quinazolin-4(3)-one with ethyl chloro-acetate. The quinazoline ring forms a dihedral angle of 86.83 (5)° with the phenyl ring.