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Browsing by Author "Pedro, J.R."

Now showing items 1-20 of 23

A Combination of Visible-Light Organophotoredox Catalysis and Asymmetric Organocatalysis for the Enantioselective Mannich Reaction of Dihydroquinoxalinones with Ketones

Rostoll-Berenguer, J.; Blay, G.; Muñoz Roca, María Del Carmen; Pedro, J.R.; Vila, C. (American Chemical Society, 2019-08-02)

[EN] An enantioselective photooxidative Mannich reaction of dihydroquinoxalinones with ketones by the merger of organophotoredox and asymmetric organocatalysis is described. This protocol features very mild reaction ...
A Hydrogen-Bonded Supramolecular meso-Helix

Blay, G.; Fernández, I.; Pedro, J. R.; Ruiz-García, R.; Muñoz Roca, María Del Carmen; Cano, J.; Carrasco, R. (John Wiley & Sons, 2003-05)

[EN] A new one-dimensional hydrogen-bonded polymer with a unique meso-helical structure has been prepared from the spontaneous self-assembly in the solid-state of meta-substituted phenylene dioxamic acid diethyl ester ...
Alkane oxidation by a carboxylate-bridged dimanganese(III) complex

Blay, G.; Fernández, I.; Giménez, T.; Pedro, J. R.; Ruiz-García, R.; Pardo, E.; Lloret F.; Muñoz Roca, María Del Carmen (The Royal Society of Chemistry, 2001)

[EN] A new manganese( III) oxamato dimer possesing an unprecedented Mn-2(mu -O2CR)(mu -OH2. . .O2CR) core has been synthesised, structurally and magnetically characterised, and used as a catalyst for the oxidation of alkanes ...
Catalytic enantioselective addition of terminal alkynes to aromatic aldehydes using zinc-hydroxyamide complexes

Blay, G.; Cardona, L.; Fernández, I.; Marco-Aleixandre, A.; Muñoz Roca, María Del Carmen; Pedro, J. R. (The Royal Society of Chemistry, 2009-08-17)

[EN] A mandelamide ligand, derived from (S)-mandelic acid and (S)-phenylethanamine, catalyzes the addition of aryl-, alkyl-and silyl-alkynylzinc reagents to aromatic and heteroaromatic aldehydes with good yields and good ...
Chemistry and reactivity of dinuclear manganese oxamate complexes: Aerobic catechol oxidation catalyzed by high-valent bis(oxo)-bridged dimanganese(IV) complexes with a homologous series of binucleating 4,5-disubstituted-o-phennylenedioxamate ligands

Blay, G.; Fernández, I.; Pedro, J. R.; Ruiz-García, R.; Temporal-Sánchez, T.; Pardo, E.; Lloret, F.; Muñoz Roca, María Del Carmen (Elsevier, 2006-05-02)

[EN] The high-valent bis(oxo)-bridged dimanganese(IV) complexes with the series of binucleating 4.5-X-2-o-phenylenebis(oxamate) ligands (opbaX(2); X = H, Cl, Me) (1a-c) have been synthesized and characterized structurally, ...
Chemistry and reactivity of mononuclear manganese oxamate complexes: Oxidative carbon-carbon bond cleavage of vic-diols by dioxygen and aldehydes catalyzed by a trans-dipyridine manganese(III) complex with a tetradentate o-phenylenedioxamate ligand

Barroso, S.; Blay, G.; Fernández, I.; Pedro, J. R.; Ruiz-García, R.; Pardo, E.; Lloret, F.; Muñoz Roca, María Del Carmen (Elsevier, 2006-01-16)

[EN] Two new mononuclear octahedral manganese(III) complexes with the tetradentate equatorial ligand o-phenylenebis(oxamate) (opba) and two aquo (1a) or two pyridine (1b) axial ligands have been synthesized and characterized ...
Copper-catalysed enantioselective Michael addition of malonic esters to beta-trifluoromethyl-alpha,beta-unsaturated imines

Espinosa, M.; Herrera, J.; Blay, G.; Cardona, L.; Muñoz Roca, María Del Carmen; Pedro, J.R. (The Royal Society of Chemistry, 2017)

[EN] Copper triflate-BOX complexes catalyse the enantioselective conjugate addition of methyl malonate to beta-trifluoromethyl-alpha,beta-unsaturated imines to give the corresponding enamines bearing a trifluoromethylated ...
Enantioselective Addition of Nitromethane to 2-Acylpyridine N-Oxides. Expanding the Generation of Quaternary Stereocenters with the Henry Reaction

Holmquist, M.; Blay, G.; Muñoz Roca, María Del Carmen; Pedro, J. R. (American Chemical Society, 2014-02-21)

[EN] The direct asymmetric Henry reaction with prochiral ketones, leading to tertiary nitroaldols, is an elusive reaction so far limited to a reduced number of reactive substrates such as trifluoromethyl ketones or alpha-keto ...
Enantioselective alkynylation of benzo[e][1,2,3]-oxathiazine 2,2-dioxides catalysed by (R)-VAPOL-Zn complexes: synthesis of chiral propargylic cyclic sulfamidates

De Munck, Lode; Monleón, A.; Vila, C.; Muñoz Roca, María Del Carmen; Pedro, J. R. (The Royal Society of Chemistry, 2015-06)

[EN] (R)-VAPOL-Zn(II) complexes catalysed the enantioselective addition of terminal alkynes to cyclic benzoxathiazine 2,2-dioxides, providing the corresponding chiral propargylic sulfamidates with high yields (up to 93%) ...
Enantioselective synthesis of chiral oxazolines from unactivated ketones and isocyanoacetate esters by synergistic silver/organocatalysis

Martínez-Pardo, P.; Blay, G.; Muñoz Roca, María Del Carmen; Pedro, J. R.; Sanz-Marco, A; Vila, C. (The Royal Society of Chemistry, 2018-03-21)

[EN] A multicatalytic approach that combines a bifunctional Brønsted base¿squaramide organocatalyst and Ag+ as Lewis acid has been applied in the reaction of unactivated ketones with tert-butyl isocyanoacetate to give ...
Enantioselective Synthesis of Tertiary Alcohols through a Zirconium-Catalized Friedel-Crafts Alkylation of Pyrroles with alpha-Ketoesters

Blay, G.; Fernández, I.; Muñoz Roca, María del Carmen; Pedro, J.R.; Recuenco, A.; Vila, C. (American Chemical Society, 2011-06-18)

Chiral complexes of 1,10-bi-2-naphthol-based ligands with zirconium tert-butoxide catalyze the Friedel Crafts alkylation of pyrroles with R-ketoesters to afford tertiary alcohols in good yields and ee up to 98%. The ...
Highly enantioselective copper(I)-catalyzed conjugate addition of 1,3-diynes to a,b-unsaturated trifluoromethyl ketones

Sanz-Marco, Amparo; Blay, Gonzalo; Muñoz Roca, María Del Carmen; Pedro, J.R. (Royal Society of Chemistry, 2015)

[EN] The conjugate diynylation of a,b-unsaturated trifluoromethyl ketones is carried out in the presence of a low catalytic load (2.5 mol%) of a copper(I)–MeOBIPHEP complex, triethylamine and a terminal 1,3-diyne. Pre ...
Hydroxy-Directed Enantioselective Hydroxyalkylation in the Carbocyclic Ring of Indoles

Montesinos-Magraner, M.; Vila, C.; Blay, G.; Fernández, I.; Muñoz Roca, María Del Carmen; Pedro, J.R. (American Chemical Society, 2017)

[EN] A Cinchona-derived squaramide catalyzes the reaction between hydroxyindoles and isatins leading to enantioenriched indoles substituted in the carbocyclic ring. The reaction proceeds efficiently with differently ...
Lanthanum-pyBOX complexes as catalysts for the enantioselective conjugate addition of malonate esters to beta-gamma-unsaturated alfa-ketimino esters

Espinosa, M.; Blay, G.; Cardona, L.; Fernández, I.; Muñoz Roca, María Del Carmen; Pedro, J.R. (Taylor & Francis, 2018)

[EN] In this paper, we report the application of chiral complexes of La(III) with pyBOX ligands as Lewis acid catalysts in the conjugate addition of malonic esters to N-tosyl imines derived from ß,gamma-unsaturated alfa-keto ...
NMR Spectrocopic Characterization and DFT Calculations of Zirconium(IV)-3,3 -Br-2-BINOLate and Related Complexes Used in an Enantioselective Friedel Crafts Alkylation of Indoles with alpha, beta-Unsaturated Ketones

Blay, G.; Cano, J.; Cardona, L.; Fernandez, I.; Muñoz Roca, María del Carmen; Pedro, J.R.; Vila, C. (American Chemical Society, 2012-12-07)

Experimental and theoretical studies on the structure of several complexes based on (R)-3,3'-Br-2-BINOL ligand and group (IV) metals used as catalysts in an enantioselective Friedel-Crafts alkylation of indoles with ...
Organocatalytic Enantioselective Functionalization of Hydroxyquinolines through an Aza-Friedel-Crafts Alkylation with Isatin-derived Ketimines

Vila, C.; Rendón-Patiño, A.; Montesinos-Magraner, M.; Blay, G.; Muñoz Roca, María Del Carmen; Pedro, J.R. (John Wiley & Sons, 2018-03-01)

[EN] A highly enantioselective addition of hydroxyquinolines to isatin-derived ketimines has been realized using a quinine-derived thiourea organocatalyst. The reaction affords chiral 3-amino-2-oxindoles bearing a quinoline ...
Organocatalytic enantioselective functionalization of indoles in the carbocyclic ring with cyclic imines

Vila, C.; Tortosa, A.; Blay, G.; Muñoz Roca, María Del Carmen; Pedro, J.R. (The Royal Society of Chemistry, 2019-01-07)

[EN] An organocatalytic enantioselective functionalization in the carbocyclic ring of indoles with benzoxathiazine 2,2-dioxides is described using a quinine-derived bifunctional organocatalyst. This aza-Friedel-Crafts ...
Organocatalytic Enantioselective Strecker Reaction with Seven-Membered Cyclic Imines

Lluna Galán, C.; Blay, G.; Fernández, I.; Muñoz Roca, María Del Carmen; Pedro, J. R.; Vila, C. (John Wiley & Sons, 2018)

[EN] A highly enantioselective Strecker reaction with dibenzo[b,f][1,4]oxazepines has been described using a dihydroquinine-derived thiourea as organocatalyst. The reaction affords chiral 10,11-dihydrodibenzo[b,f][1,4] ...
Organocatalytic Enantioselective Synthesis of alpha-Hydroxyketones through a Friedel-Crafts Reaction of Naphthols and Activated Phenols with Aryl- and Alkylglyoxal Hydrates

Vila, C.; Quintero, L.; Blay, G.; Muñoz Roca, María Del Carmen; Pedro, J.R. (American Chemical Society, 2016-11-04)

[EN] An efficient organocatalytic asymmetric synthesis of alpha-hydroxyketones has been developed. Quinine-derived thiourea catalyzed the enantioselective Friedel Crafts alkylation of naphthols and activated phenols with ...
Regio- and Stereoselective Synthesis of 3-Pyrazolylidene-2-oxindole Compounds by Nucleophilic Vinylic Substitution of (E)-3-(Nitromethylene)indolin-2-one

Vila, C.; Slack, S.; Blay, G.; Muñoz Roca, María Del Carmen; Pedro, J. R. (John Wiley & Sons, 2019-04-16)

[EN] A highly regio- and stereoselective synthesis of 3-alkylidene-2-oxindoles has been described through a nucleophilic vinylic substitution (SNV) of (E)-3-(nitromethylene)indolin-2-one using pyrazol-3-ones as nucleophiles ...