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365 results on '"De Luca, Lidia"'

6. Mechanochemistry in Organic Synthesis: An Italian Journey through Innovations.

Author

Basoccu, Francesco, De Luca, Lidia, and Porcheddu, Andrea

Subjects
*SUSTAINABLE chemistry, *SUSTAINABILITY, *CHEMICAL reactions, *POWER transmission, *MECHANICAL chemistry, *ORGANIC synthesis
Abstract

Mechanochemistry, as an enabling technology, harnesses mechanical force to drive chemical reactions, presenting compelling advantages in organic synthesis within the principles of green chemistry. This review explores how its unique advantages and alignment with sustainable practices have been widely developed in different scientific fields in Italy. As a transformative strategy for organic synthesis, mechanochemistry has been portrayed in this review as a valuable synthetic alternative due to the various advantages, such as solvent reduction and new reaction pathways, that its use brings. Nonetheless, the improvements brought about by its use have also been crucial in other fields of chemistry described by Italian scientists. In this whole context, Italian researchers have analysed both already optimised processes and new feasible pathways, paving the way for new avenues previously hampered by all the limitations that belong to in‐solution chemistry. [ABSTRACT FROM AUTHOR]

Published
2024
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7. 5,10,15,20-Tetrakis-(4-(3-carbamoyl-pyridyl)-methylphenyl)porphyrin Bromide.

Author

Satta, Giuseppe, Gaspa, Silvia, Pisano, Luisa, De Luca, Lidia, and Carraro, Massimo

Subjects
PORPHYRINS, CONDENSATION reactions, BROMIDES, METALLOPORPHYRINS, PYRROLE derivatives, PYRROLES, MOIETIES (Chemistry)
Abstract

The synthesis of a new tetracationic porphyrin derivative is described. Contrary to the best known derivatives in the literature, which are derived from 5,10,15,20-tetrakis-4-pyridylporphyrin (TPyP), in this procedure we start from 5,10,15,20-tetrakis-(4-carboxymethoxyphenyl)porphyrin (TPPCOOMe), obtained by the condensation reaction between pyrrole and 4-formylbenzoate. The reaction is carried out in refluxed xylene, avoiding the use of halogenated solvents. The final product, 5,10,15,20-tetrakis-(4-(3-carbamoyl-pyridyl)-methylphenyl)porphyrin bromide (P15p), exhibits four cationic portions that make it soluble in water and suitable for G4 stabilization. The choice to synthesize a derivative of TPPCOOMe is based on the idea of having a possible stabilizer that, unlike those obtained from TPyP, shows the cationic moieties farther from the porphyrin core and thus closer to the phosphate groups present on the G4 loops. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Oxidovanadium(IV) sulfate catalyses light-driven C–N bond formation

Author

Gaspa, Silvia, primary, Sciortino, Giuseppe, additional, Porcheddu, Andrea, additional, Dell'Osa, Chiara, additional, Satta, Giuseppe, additional, Azzena, Ugo, additional, Pisano, Luisa, additional, Carraro, Massimo, additional, Sanna, Daniele, additional, Garribba, Eugenio, additional, Maseras, Feliu, additional, and De Luca, Lidia, additional

Published
2023
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17. Recovery, Purification, Analysis and Chemical Modification of a Waste Cooking Oil

Author

Azzena, Ugo, primary, Montenero, Angelo, additional, Carraro, Massimo, additional, Crisafulli, Rosella, additional, De Luca, Lidia, additional, Gaspa, Silvia, additional, Muzzu, Andrea, additional, Nuvoli, Luca, additional, Polese, Riccardo, additional, Pisano, Luisa, additional, Pintus, Elisa, additional, Pintus, Salvatore, additional, Girella, Alessandro, additional, and Milanese, Chiara, additional

Published
2022
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21. Quantitative 1H NMR analyses of the vegetable oils and GC validation from Aquivion perfluorosulfonic superacid as an effective catalyst for selective epoxidation of vegetable oils

Author

Polese, Riccardo, Pintus, Elisa, Nuvoli, Luca, Tiana, Monica, Pintus, Salvatore, Satta, Giuseppe, Beccu, Andrea, Gaspa, Silvia, Carraro, Massimo, De Luca, Lidia, Azzena, Ugo, and PISANO, Luisa

Abstract

The acid-promoted epoxidation of vegetable oils was studied using a variety acidic ion exchange resins as heterogeneous acid catalysts. Quantitative and selective epoxidation of a series of vegetable oils with different composition of saturated, mono-, di- and tri-unsaturated fatty acids was obtained upon identification of the more efficient catalyst and experimental conditions. Furthermore, optimized reaction conditions were successfully applied to the epoxidation of a waste cooking oil, thus extending our procedure to the valorization of a biowaste, an area of increasing importance within a more sustainable society. The use of quantitative 1H NMR besides making accurate evaluation of the amounts of reagents to be employed and of the selectivity, allowed facile and rapid quantification of mono-, di- and tri-epoxides, thus providing an indirect indication on the fatty acid composition of the vegetable oils, even in the presence of very low quantities of linolenic acid.

Published
2022
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23. A Visible‐Light Driven Esterification of Aldehydes Catalyzed by VOSO4.

Author

Gaspa, Silvia, Ledda, Luca, d'Atri, David, Porcheddu, Andrea, Pisano, Luisa, Carraro, Massimo, and De Luca, Lidia

Subjects
ESTERIFICATION, ALDEHYDES, METALS, VANADIUM, HALOGENATION
Abstract

An esterification of the C−H bond of aldehydes promoted by oxidovanadium(IV) sulfate, VIVOSO4, is reported. The process is mediated by visible‐light, is carried out at room temperature, in absence of additives and using H2O2 as a benign oxidant. VOSO4 is a commercially available, earth‐abundant metal (EAMs) salt, that does not require to be prepared. This report opens intriguing perspectives for the extended application of vanadium salts toward halogenation processes as well as for C−H activations and gives a contribution in the field of earth‐abundant metals based‐catalysis. [ABSTRACT FROM AUTHOR]

Published
2023
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24. Nenitzescu Synthesis of 5‐Hydroxyindoles with Zinc, Iron and Magnesium Salts in Cyclopentyl Methyl Ether

Author

Satta, Giuseppe, primary, Usala, Elena, additional, Solinas, Angelo, additional, Römer, Melina, additional, Livesi, Marco, additional, Pira, Giovanni Michele, additional, Beccu, Andrea, additional, Carboni, Silvia, additional, Gaspa, Silvia, additional, De Luca, Lidia, additional, Pisano, Luisa, additional, Azzena, Ugo, additional, and Carraro, Massimo, additional

Published
2021
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26. Mild and highly selective formyl protection of primary hydroxyl groups

Author

De Luca, Lidia, Giacomelli, Giampaolo, and Porcheddu, Andrea

Subjects
Chemistry, Organic -- Research, Hydrogen -- Physiological aspects, Esters -- Physiological aspects, Alcohols -- Physiological aspects, Fluorides -- Physiological aspects, Lithium -- Physiological aspects, Chlorides -- Physiological aspects, Methylation -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the alcohol conversion into formate esters. Results indicate that this conversion can be carried out in methyl chloride at room temperature via the use of 2,4,6-trichloro-1,3,5-triazine and N,N-dimethylformamide in the presence of lithium fluoride.

Published
2002

27. An easy and convenient synthesis of Weinreb amides and hydroxamates

Author

De Luca, Lidia, Giacomelli, Giampaolo, and Taddei, Maurizio

Subjects
Chemistry, Organic -- Research, Amides -- Research, Carboxylic acids -- Physiological aspects, Nitrogen -- Physiological aspects, Oxygen -- Physiological aspects, Amines -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the Weinreb amides. The preparation of these amides via the carboxylic acids and N,O-dimethylhydroxylamine coupling is described.

Published
2001

28. Ammonium Salts Catalyzed Acetalization Reactions in Green Ethereal Solvents

Author

Azzena, Ugo, primary, Carraro, Massimo, additional, Corrias, Martina, additional, Crisafulli, Rosella, additional, De Luca, Lidia, additional, Gaspa, Silvia, additional, Nuvoli, Luca, additional, Pintus, Salvatore, additional, Pisano, Luisa, additional, Polese, Riccardo, additional, Sanna, Michela, additional, Satta, Giuseppe, additional, Senes, Nina, additional, Urtis, Luigi, additional, and Garroni, Sebastiano, additional

Published
2020
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33. A facile approach to the synthesis of chiral 2-substituted benzofurans

Author

De Luca, Lidia, Giacomelli, Giampaolo, and Nieddu, Giammario

Subjects
Furans -- Chemical properties, Amino acids -- Chemical properties, Biological sciences, Chemistry
Abstract

An effective route is described for optically active chiral 2-substituted benzofurans direct from carboxylic acids. This method has allowed the preparation of [alpha]-alkyl-2-benzofuranmethanamines from N-protected [alpha]-amino acids without sensible racemization phenomena and it has proceeded under mild conditions with the help of microwave irradiation.

Published
2007

38. Beckmann rearrangement of oximes under very mild conditions

Author

De Luca, Lidia, Giacomelli, Giampaolo, and Porcheddu, Andrea

Subjects
Chemistry, Organic -- Research, Ketones -- Physiological aspects, Nitrogen -- Physiological aspects, Dimethylformamide -- Physiological aspects, Chlorine -- Physiological aspects, Chemical reactions -- Analysis, Biological sciences, Chemistry
Abstract

Research has been conducted on the ketoximes prepared from the corresponding ketones. The results of the Beckmann rearrangement of these ketoximes treated with 2,4,6-trichloro[1,3,5]triazine in N,N-dimethylformamide are reported.

Published
2002

39. A mild and efficient alternative to the classical Swern oxidation

Author

De Luca, Lidia, Giacomelli, Giampaolo, and Porcheddu, Andrea

Subjects
Chemistry, Organic -- Research, Oxidation-reduction reaction -- Physiological aspects, Carbonyl compounds -- Physiological aspects, Alcohols -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the oxidation of alcohols. The use of the mild procedure as an alternative of the classical Swern oxidation for the conversion of alcohols into the carbonyl compounds is described.

Published
2001

40. Solid-phase synthesis of isoxazole-based amino acids: a new scaffold for molecular diversity

Author

De Luca, Lidia, Giacomelli, Giampaolo, and Riu, Antonella

Subjects
Chemistry, Organic -- Research, Amino acids -- Physiological aspects, Molecules -- Analysis, Biological sciences, Chemistry
Abstract

Research has been conducted on the scaffold that contains an isoxazole moiety. The creation of the rigid core molecule carrying various functional groups which could generate a molecular diversomer library is described.

Published
2001

44. An easy microwave-assisted synthesis of sulfonamides directly from sulfonic acids

Author

Giacomelli, Giampaolo and De Luca, Lidia

Subjects
Microwaves -- Usage, Sulfonamides -- Chemical properties, Biological sciences, Chemistry
Abstract

An easy and handy synthesis of sulfonamides directly from sulfonic acids or its sodium salts is reported. The reaction is performed under microwave irradiation and shows a good functional group tolerance.

Published
2008

50. Trichloroisocyanuric/TEMPO oxidation of alcohols under mild conditions: a close investigation

Author

De Luca, Lidia, Giacomelli, Giampaolo, Masala, Simonetta, and Porcheddu, Andrea

Subjects
Chemistry, Organic -- Research, Organic compounds -- Composition, Chlorine compounds -- Composition, Oxidation-reduction reaction, Alcohols, Water chemistry, Acetone, Acids, Biological sciences, Chemistry
Abstract

Research has been conducted on primary alcohols. The authors report that oxidation of these alcohols to the carboxylic acids can be carried out via trichloroisocyanuric acis at room temperature and in acetone or water in the presence of catalytic 2,2,6,6-tetramethyl-1-piperidinyloxy.

Published
2003

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