Search Results - "Righi, Paolo"

Remote Control of Axial Chirality: Aminocatalytic Desymmetrization of N‑Arylmaleimides via Vinylogous Michael Addition by Di Iorio, Nicola, Righi, Paolo, Mazzanti, Andrea, Mancinelli, Michele, Ciogli, Alessia, Bencivenni, Giorgio

“…Remote control of the axial chirality of N-(2-t-butylphenyl)­succinimides was realized via the vinylogous Michael addition of 3-substituted cyclohexenones to…”
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Organocatalytic Michael-Alkylation Cascade: The Enantioselective Nitrocyclopropanation of Oxindoles by Pesciaioli, Fabio, Righi, Paolo, Mazzanti, Andrea, Bartoli, Giuseppe, Bencivenni, Giorgio

“…The spiro saga goes on! The title reaction sequence provides the first enantioselective synthesis of spiro nitrocyclopropyl oxindoles. The method provides easy…”
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Organocatalytic Atroposelective Formal Diels–Alder Desymmetrization of N‑Arylmaleimides by Eudier, Florine, Righi, Paolo, Mazzanti, Andrea, Ciogli, Alessia, Bencivenni, Giorgio

“…The atroposelective desymmetrization of N-arylmaleimides was realized by means of a primary amine catalyzed Diels–Alder reaction of enones. The chiral axis as…”
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On the Nature of the Rotational Energy Barrier of Atropisomeric Hydrazides by Pellegrini, Andrea, Marcon, Laura, Righi, Paolo, Centonze, Giovanni, Portolani, Chiara, Capodiferro, Marco, Oljira, Shilashi Badasa, Manetto, Simone, Ciogli, Alessia, Bencivenni, Giorgio

“…N-N atropisomers represent a useful class of compounds that has recently received important attention from many research groups. This article presents an…”
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Protection (and Deprotection) of Functional Groups in Organic Synthesis by Heterogeneous Catalysis by Sartori, Giovanni, Ballini, Roberto, Bigi, Franca, Bosica, Giovanna, Maggi, Raimondo, Righi, Paolo

“…The preparation of complex organic molecules demands the availability of different protective groups to allow the survival of reactive functional groups during…”
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Betti's base for crystallization-induced deracemization of substituted aldehydes: synthesis of enantiopure amorolfine and fenpropimorph by Carella, Andrea, Ramos Ferronatto, Gabriel, Marotta, Emanuela, Mazzanti, Andrea, Righi, Paolo, Paolucci, Claudio

“…The acid-promoted crystallization-induced diastereoisomer transformation (CIDT) of naphthoxazines derived from racemic O-protected 2-substituted…”
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Two alternative routes for 1,2-cyclohexanediol synthesis by means of green processes: Cyclohexene dihydroxylation and catechol hydrogenation by Antonetti, Claudia, Galletti, Anna Maria Raspolli, Accorinti, Pasquale, Alini, Stefano, Babini, Pierpaolo, Raabova, Katerina, Rozhko, Elena, Caldarelli, Aurora, Righi, Paolo, Cavani, Fabrizio, Concepcion, Patricia

“…•The dihydroxylation of cyclohexene gives 97.4% yield to 1,2-cyclohexanediol.•The catalyst is made of WO42−/PO43−, in a biphasic system.•Important parameters…”
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Iodocyclization/base-induced hydrodeiodination reaction of 5-substituted 4-alkenols. The influence of substituent on the stereoselective pathway by Paolucci, Claudio, Righi, Paolo

“…The electrophilic iodocyclization reaction of ( Z)- and ( E)-5- n-alkylsubstituted 4-alken-1-ols followed by base-induced hydrodeiodination reaction…”
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Supported organic catalysts: synthesis of ( E )-nitrostyrenes from nitroalkanes and aromatic aldehydes over propylamine supported on MCM-41 silica as a reusable catalyst by Demicheli, Giuseppina, Maggi, Raimondo, Mazzacani, Alessandro, Righi, Paolo, Sartori, Giovanni, Bigi, Franca

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Enantioselective Strategies for The Synthesis of N−N Atropisomers by Centonze, Giovanni, Portolani, Chiara, Righi, Paolo, Bencivenni, Giorgio

“…Axially chiral compounds have been always considered a laboratory curiosity with rare prospects of being applied in asymmetric synthesis. Things have changed…”
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Role of Cinchona Alkaloids in the Enantio- and Diastereoselective Synthesis of Axially Chiral Compounds by Portolani, Chiara, Centonze, Giovanni, Righi, Paolo, Bencivenni, Giorgio

“…Conspectus Asymmetric synthesis using organic catalysts has evolved since it was first realized and defined. Nowadays, it can be considered a valid alternative…”
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Solution- and Solid-Phase Synthesis of 4-Hydroxy-4,5-dihydroisoxazole Derivatives from Enantiomerically Pure N-Tosyl-2,3-aziridine Alcohols by Righi, Paolo, Scardovi, Noemi, Marotta, Emanuela, ten Holte, Peter, Zwanenburg, Binne

“…Enantiomerically pure N-tosyl-2,3-aziridine alcohols are directly converted into 4-hydroxy-4,5-dihydroisoxazole 2-oxides through oxidation to the corresponding…”
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Synthesis of Atropisomeric Hydrazides by One‐Pot Sequential Enantio‐ and Diastereoselective Catalysis by Portolani, Chiara, Centonze, Giovanni, Luciani, Sara, Pellegrini, Andrea, Righi, Paolo, Mazzanti, Andrea, Ciogli, Alessia, Sorato, Andrea, Bencivenni, Giorgio

“…The first catalytic enantioselective and diastereoselective synthesis of atropisomeric hydrazides was achieved using a sequential catalysis protocol. This…”
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Photochemical Organocatalytic Synthesis of Thioethers from Aryl Chlorides and Alcohols by Wu, Shuo, Wong, Thomas Hin-Fung, Righi, Paolo, Melchiorre, Paolo

“…Thioethers, often found in pharmaceuticals and natural compounds, typically involve metal cross-coupling reactions, high temperatures, and the use of…”
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Domino Processes as a Tool for Recovering Substandard Reactions. Synthesis and Use of Nitroacetic Acid Esters and Amides by Scardovi, Noemi, Casalini, Andrea, Peri, Francesca, Righi, Paolo

“…Elusive nitroacetic acid esters and amides were obtained through a halogen exchange reaction of the corresponding bromoacetic acid derivatives with…”
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Computational Investigation on the Origin of Atroposelectivity for the Cinchona Alkaloid Primary Amine-Catalyzed Vinylogous Desymmetrization of N‑(2‑t‑Butylphenyl)maleimides by Tampellini, Nicolò, Righi, Paolo, Bencivenni, Giorgio

“…Mechanistic studies clarifying how chiral primary amines control the stereochemistry of vinylogous processes are rare. We report a density functional theory…”
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Integrating probability and big non-probability samples data to produce Official Statistics by Golini, Natalia, Righi, Paolo

“…This paper introduces the pseudo-calibration estimators, a novel method that integrates a non-probability sample of big size with a probability sample,…”
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Noncovalent Interactions between Stacked Arenes in 1,8‐Bis‐(1‐naphthyl)‐naphthalenes by Chiarucci, Michel, Mazzanti, Andrea, Righi, Paolo, Bencivenni, Giorgio, Mancinelli, Michele

“…A number of 1,8‐bis(1‐naphthyl)‐naphthalenes, bearing different substituents in the 1‐naphthyl moieties have been prepared to investigate the noncovalent…”
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Cover Feature: Noncovalent Interactions between Stacked Arenes in 1,8‐Bis‐(1‐naphthyl)‐naphthalenes (Eur. J. Org. Chem. 18/2021) by Chiarucci, Michel, Mazzanti, Andrea, Righi, Paolo, Bencivenni, Giorgio, Mancinelli, Michele

“…The Cover Feature shows a part of the new buildings at the University of Bologna, dedicated to the Chemistry and Pharmaceutical Departments (“Navile” site),…”
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Direct Access to Alkylideneoxindoles via Axially Enantioselective Knoevenagel Condensation by Crotti, Simone, Di Iorio, Nicola, Artusi, Chiara, Mazzanti, Andrea, Righi, Paolo, Bencivenni, Giorgio

“…The organocatalytic axially enantioselective Knoevenagel condensation between prochiral cyclohexanones and oxindoles is presented. The reaction, promoted by a…”
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