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Listar por palabra clave "Regioselectivity"

Mostrando ítems 1-9 de 9

Active and Regioselective Ru Single-Site Heterogeneous Catalystsfor Alpha-Olefin Hydroformylation

Escobar-Bedia, Francisco Javier; Lopez-Haro, Miguel; Calvino, Jose Juan; Martin-Diaconescu, Vlad; Simonelli, Laura; Pérez-Dieste, Virginia; Sabater Picot, Mª José; Concepción Heydorn, Patricia; Corma Canós, Avelino (American Chemical Society, 2022-04-01)

[EN] A heterogeneous ruthenium catalyst consisting ofisolated single atoms and disordered clusters stabilized in a N-doped carbon matrix has been synthesized with very good activityand remarkable regioselectivity in the ...
Efficient Synthesis of 5-Chalcogenyl-1,3-oxazin-2-ones by Chalcogen-Mediated Yne Carbamate Cyclisation: An Experimental and Theoretical Study

Monleón, Alicia; Blay, Gonzalo; Domingo, Luis R.; Muñoz Roca, María del Carmen; Pedro, José R. (Wiley-VCH Verlag, 2015-02)

A very efficient synthesis of 5-chalcogenyl-1,3-oxazin-2-ones has been accomplished by the chalcogen-mediated yne-carbamate cyclisation of chiral, non-racemic N-Cbz-protected propargylic amines using PhXY (X = Se, S, Te; ...
Enantioselective Friedel-Crafts Alkylation of Indoles with (E)-1-Aryl-4-benzyloxybut-2-en-1-ones Catalyzed by an (R)-3,3-Br2BINOLate-Hafnium(IV) Complex

Muñoz Roca, María del Carmen (Wiley-VCH Verlag, 2013-02-11)

A highly enantioselective Friedel–Crafts reaction of unprotected indoles with (E)-1-aryl-4-benzyloxybut-2-en-1-ones catalyzed by a new chiral [Hf{(R)-3,3′-Br2-BINOL}(OtBu)2]2 complex has been developed to functionalize the ...
Low-nuclearity single-atom and supported metal cluster catalysts in ethylene and propylene hydroformylation

Garcia-Farpon, Marcos; Prieto González, Gonzalo (Elsevier, 2025-02-01)

[EN] Olefin hydroformylation is one of the most significant examples of homogeneously catalyzed conversion processes. However, developing chemo/regio-selective and stable solid catalysts has remained a persistent challenge ...
Prospects of Heterogeneous Hydroformylation with Supported Single Atom Catalysts

Amsler, Jonas; Sarma, Bidyut B.; Agostini, G.; Prieto González, Gonzalo; Plessow, P.; Studt, F. (American Chemical Society, 2020-03-18)

[EN] The potential of oxide-supported rhodium single atom catalysts (SACs) for heterogeneous hydroformylation was investigated both theoretically and experimentally. Using high-level domain-based local-pair natural orbital ...
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 ...
Regioselective Hydration of Alkynes by Iron(III) Lewis/Brønsted Catalysis

Cabrero Antonino, Jose Ramón; Leyva Perez, Antonio; Corma Canós, Avelino (Wiley-VCH Verlag, 2012-08-27)

The triflimide iron(III) salt [Fe(NTf2)3] promotes the direct hydration of terminal and internal alkynes with very good Markovnikov regioselectivities and high yields. The enhanced carbophilic Lewis acidity of the FeIII ...
Regioselectivity in Pyrene-Templated Polymerization Using MOFs as 1D Porous Scaffolds

Armani-Calligaris, Giacomo; Carrasco, Sergio; Atienzar Corvillo, Pedro Enrique; Navalón Oltra, Sergio; Martineau-Corcos, Charlotte; Ávila, David; O'Shea, Víctor A.; García Gómez, Hermenegildo; Salles, Fabrice; Horcajada, Patricia (American Chemical Society, 2024-08-19)

[EN] Physicochemical properties of polymers strongly depend on the arrangement and distribution of attached monomers. Templated polymerization using porous crystalline materials appears as a promising route to gain control ...
Synthesis of Densely Functionalised 5-Halogen-1,3-oxazin-2-ones byHalogen-Mediated Regioselective Cyclisation of N-Cbz-ProtectedPropargylic Amines: A Combined Experimental and Theoretical Study

Monleon, Alicia; Blay, Gonzalo; Domingo, Luis R.; Muñoz Roca, María del Carmen; Pedro, José R. (Wiley-VCH Verlag, 2013-10-25)

A very efficient synthesis of 5-halogen-1,3-oxazin-2-ones has been accomplished by the halocyclisation reaction of chiral nonracemic N-carbobenzyloxy (N-Cbz)-protected propargylic amines by using I-2, Br-2 and Cl-2 as ...