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96 results on '"Bonamartini, A."'

6. ChemInform Abstract: Condensation of Thiourea Derivatives with Carbonyl Compounds: One-Pot Synthesis of N-Alkyl-1,3-thiazol-2-amines and of 3-Alkyl-1,3-thiazolimines

Author

Paolo Sgarabotto, Anna Bonamartini Corradi, Cristian Silvestroni, Luciano Forlani, and Carla Boga

Subjects
chemistry.chemical_classification, Oxygen transfer, Silica gel, One-pot synthesis, Condensation, chemistry.chemical_element, General Medicine, Keto–enol tautomerism, Medicinal chemistry, Sulfur, chemistry.chemical_compound, chemistry, Thiourea, Alkyl
Abstract

The reactions of ketones and N-substituted thioureas, in the presence of HCl (or HBr) and DMSO afford mixtures of the title compounds which are easily separated on a silica gel column. This method avoids the classical use of α-haloketones. The mechanism of these reactions involves the enolization of ketones and the activation of thiourea sulfur, probably by oxygen transfer from DMSO.

Published
2010
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7. ChemInform Abstract: Mechanism of the Formation of 1,2,4-Thiadiazoles by Condensation of Aromatic Thioamides and of N-Substituted Thioureas

Author

Anna Bonamartini Corradi, Andrea Lugli, Paolo Sgarabotto, Luciano Forlani, and Carla Boga

Subjects
chemistry.chemical_compound, chemistry, Thiourea, Thiadiazoles, Dimethyl sulfoxide, Stereochemistry, Condensation, General Medicine, Condensation reaction, Medicinal chemistry
Abstract

The condensation reaction of thiobenzamide, (as well as thionicotinamide and isothionicotinamide) in the presence of dimethyl sulfoxide and of an acid, affords 3,5-diphenyl-1,2,4-thiadiazole. Under the same experimental conditions, N-substituted thioureas are also condensed to 1,2,4-thiadiazole derivatives; their structure is ascertained by spectroscopic properties and by X-ray diffraction. Some information on the mechanism of thiadiazoles formation from both starting classes of compounds, thiobenzamides and N-substituted thiourea, is collected and discussed.

Published
2010
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8. ChemInform Abstract: Glass Matrix Composites from Solid Waste Materials

Author

Milena Salvo, Isabella Lancellotti, Luisa Barbieri, Anna Bonamartini Corradi, Laurent Augier, Monica Ferraris, and Federico Smeacetto

Subjects
chemistry.chemical_element, Sintering, Young's modulus, General Medicine, symbols.namesake, chemistry, Aluminium, visual_art, Bottom ash, Vickers hardness test, symbols, Aluminium alloy, visual_art.visual_art_medium, Vitrification, Composite material, Foundry
Abstract

Glass matrix composites have been obtained by mixing and sintering “negative cost” materials coming from municipal solid waste incinerators (MSWIs) and from one aluminium foundry. The bottom ashes from two MSWIs were used to obtain the glass matrix and the solid wastes from an aluminium alloy industry were employed as a second phase. The bottom ashes were vitrified by heating at 1400°C without any additive. The vitrification process reduces the bottom ash initial volume by about 60%. The obtained glass has a Young modulus of 96 GPa and a Vickers hardness of 6 GPa. The composites were prepared in air by a low temperature pressure-less viscous phase sintering process (740–830°C) and were morphologically and mechanically characterised. The composites showed a bending strength up to 50 MPa at room temperature and could be proposed for applications in the field of tiles.

Published
2010
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10. ChemInform Abstract: Alkaline and Alkaline-Earth Silicate Glasses and Glass-Ceramics from Municipal and Industrial Wastes

Author

Isabella Lancellotti, Luisa Barbieri, and Anna Corradi Bonamartini

Subjects
Glass recycling, Metallurgy, General Medicine, Silicate, chemistry.chemical_compound, Devitrification, chemistry, Fly ash, visual_art, Differential thermal analysis, Bottom ash, visual_art.visual_art_medium, Vitrification, Ceramic
Abstract

Municipal (bottom ash and glass cullet coming from the municipal solid waste incineration and a community glass recycling program, respectively) and industrial (steel fly ash) wastes are particularly suitable to be subjected to a vitrification/devitrification process, leading to the production of alkaline and alkaline-earth silicate differently colored glasses with good chemical properties, capable to be transformed into surface nucleated basaltic glass-ceramics. These materials were investigated by means of differential thermal analysis, durability and release tests, X-ray diffraction and scanning electron microscopy.

Published
2001
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26. ChemInform Abstract: Coordination Behavior of N-Protected Aspartic Acid in Binary and Ternary Copper(II) Complexes. Crystal and Molecular Structure of Bis(2,2′-bipyridine)bis(μ-N-(benzyloxycarbonyl)-L-aspartato-O,O′,O′′)dicoppe# r(II)-2.5 Water-0.5 Sodium

Author

Giovanni Micera, Ledi Menabue, L. P. Battaglia, Luciano Antolini, Monica Saladini, and A. Bonamartini Corradi

Subjects
Crystal, Crystallography, chemistry.chemical_compound, chemistry, Sodium, Aspartic acid, chemistry.chemical_element, Molecule, General Medicine, Ternary operation, Copper, 2,2'-Bipyridine
Published
1987
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27. ChemInform Abstract: Coordination Behavior of N-Protected Aspartic Acid in Binary and Ternary Copper(II) Complexes. Crystal and Molecular Structure of (N-Acetyl-L-aspartato(2-)-O)bis(2,2′-bipyridine)copper(II)-Ethanol Tetrahydrate

Author

Luciano Antolini, Giovanni Micera, Monica Saladini, L. P. Battaglia, A. Bonamartini Corradi, and Ledi Menabue

Subjects
Crystal, chemistry.chemical_compound, Ethanol, Tetrahydrate, chemistry, Aspartic acid, Polymer chemistry, chemistry.chemical_element, Molecule, General Medicine, Ternary operation, Copper, 2,2'-Bipyridine
Published
1988
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30. ChemInform Abstract: The Factors Stabilizing Square-Planar Geometries in σ-Bonding Amine Adducts: Crystal and Molecular Structure of Bis(N-tosyl-β-alaninato)bis(piperidine)copper(II)

Author

Ledi Menabue, A. Bonamartini Corradi, Luigi Pietro Battaglia, and Monica Saladini

Subjects
Sulfonyl, chemistry.chemical_classification, chemistry.chemical_compound, Crystallography, Tosyl, Chemistry, Molecule, Electronic data, General Medicine, Piperidine, Carboxylate, Crystal structure, Triclinic crystal system
Abstract

A violet, air-stable, crystalline compound of empirical formula [Cu(Ts-β-ala) 2 (pipd) 2 ] (Ts=4- toluene sulfonyl group, hereafter abbreviated as tosyl group, Ts-β-ala= N -tosyl-β-alaninate ion, pipd = piperidine) was synthesized and characterized by means of structural and spectroscopic measurements. The crystal structure of the compound was determined from three-dimensional diffractometric data. The crystals are triclinic, space group P 1 , a = 9.305(1), b = 9.637(2), c = 12.727(2) A, α = 61.50(2), β = 63.26(1), γ = 71.68(1)°, Z = 1. The structure was solved by the heavy atom method and refined through least-squares calculations to R = 0.032 for 2911 observed reflections. The copper atom lies on the symmetry center coordinating two piperidine and two carboxylic oxygens of N -tosyl-β-alanine in a square-planar arrangement. The second carboxylic oxygen is not involved in metal coordination. Electronic data are also discussed in comparison with those of other ternary Cu(II) carboxylate amine complexes.

Published
1988
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33. ChemInform Abstract: Synthesis, Characterization, and Crystal Structures of Bismuth Complexes with 2,6-Diacetylpyridine Bis(2-thenoylhydrazone) (H2dapt): (Bi(Hdapt)Cl2)·dmso·H2O and (Bi(dapt)Cl)·dmso, Containing a Quinquedentate Ligand

Author

Pieralberto Tarasconi, Giorgio Pelosi, C. Pelizzi, L. P. Battaglia, and A. Bonamartini Corradi

Subjects
Crystallography, Chemistry, Ligand, chemistry.chemical_element, General Medicine, Crystal structure, Characterization (materials science), Bismuth
Published
1989
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34. ChemInform Abstract: Synthesis, Crystal Structure, Magnetic Properties, and Thermodynamic and Electrochemical Studies of the Binuclear Complex (μ-Oxalato)bis((1,4,8,11-tetraazacyclotetradecane)nickel(II)) Nitrate

Author

Mauro Micheloni, L. P. Battaglia, Miguel Julve, Antonio Bianchi, A. Bonamartini Corradi, and Enrique García-España

Subjects
Nickel(II) nitrate, chemistry.chemical_compound, chemistry, Inorganic chemistry, General Medicine, Crystal structure, Electrochemistry
Published
1989
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35. ChemInform Abstract: Effectiveness of the Cadmium(II) Ion in Promoting Sulfonamide Nitrogen Deprotonation. 113Cd NMR, Polarographic, and pH-Metric Investigations on the Cadmium(II)-N-Tosylglycinate and Cadmium(II)-N-Dansylglycinate Systems in Aqueous and

Author

G. Battistuzzi Gavioli, Ledi Menabue, A. Bonamartini Corradi, Marco Borsari, Marco Sola, and Gian Carlo Pellacani

Subjects
chemistry.chemical_classification, Polarography, Cadmium, Aqueous solution, Deprotonation, Chemistry, chemistry.chemical_element, General Medicine, Nitrogen, Sulfonamide, Ion, Nuclear chemistry
Published
1988
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36. ChemInform Abstract: Coordinative Abilities of Ligands Which Favor S,S Chelation: Copper(I) Halide Complexes of N,N′-Diphenyldithiomalonamide. The Crystal and Molecular Structure of Bis(N,N′-diphenyldithiomalonamide)copper(I) Iodide-Methanol (2/1)

Author

A. Bonamartini Corradi, Gian Carlo Pellacani, Ledi Menabue, Armando Marzotto, and L. P. Battaglia

Subjects
Crystal, chemistry.chemical_compound, chemistry, Polymer chemistry, Halide, Molecule, chemistry.chemical_element, Chelation, General Medicine, Methanol, Copper(I) iodide, Copper
Published
1988
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50. ChemInform Abstract: Coordination Behavior of N‐Protected Aspartic Acid in Binary and Ternary Copper(II) Complexes. Crystal and Molecular Structure of Bis(2,2′‐bipyridine)bis(μ‐N‐(benzyloxycarbonyl)‐L‐aspartato‐O,O′,O′′)dicoppe# r(II)‐2.5 Water‐0.5 Sodium Perchlorate.

Author

ANTOLINI, L., primary, BATTAGLIA, L. P., additional, BONAMARTINI CORRADI, A., additional, MENABUE, L., additional, MICERA, G., additional, and SALADINI, M., additional

Published
1987
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