Search Results - "da Silva, Vitor H. Menezes"

Triflate‐Selective Suzuki Cross‐Coupling of Chloro‐ and Bromoaryl Triflates Under Ligand‐Free Conditions by Ibsen, Grace M., Menezes da Silva, Vitor H., Pettigrew, J. Cole, Neufeldt, Sharon R.

“…In the absence of strong ancillary ligands such as phosphines or N‐heterocyclic carbenes, palladium salts are selective for C−OTf cleavage in the…”
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Enantioselective, Noncovalent, Substrate‐Directable Heck–Matsuda and Oxidative Heck Arylations of Unactivated Five‐Membered Carbocyclic Olefins by de Oliveira, Juliana Manso, Angnes, Ricardo Almir, Khan, Ismat Ullah, Polo, Ellen Christine, Heerdt, Gabriel, Servilha, Bruno M., Menezes da Silva, Vitor H., Braga, Ataualpa A. C., Correia, Carlos Roque Duarte

“…Highly diastereo‐ and enantioselective, noncovalent, substrate‐directable Heck desymmetrizations of cyclopentenyl olefins containing hydroxymethyl and…”
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Humins‐Like Solid Support for Palladium Immobilization: Highly Efficient and Recyclable Catalyst for Cross‐Coupling Reactions by Galaverna, Renan S., Fernandes, Lucas P., Menezes da Silva, Vitor H., Siervo, Abner, Pastre, Julio C.

“…In the present work, a new humins‐like resin was prepared using 2,5‐bis(hydroxymethyl)furan (DHMF) and maleic anhydride in 2 min at 110 °C. Such a new material…”
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Enantioselective Heck‐Matsuda Reactions of Spirocyclopentenyl Hydantoins Directed by Non‐Covalent Interactions: Total Synthesis of the (S,S)‐VPC01091 by Oliveira, Valdeir C., Oliveira, Juliana M., Menezes da Silva, Vitor H., Khan, Ismat U., Correia, Carlos Roque D.

“…A highly efficient Heck‐Matsuda desymmetrization of unsaturated spirohydantoins directed by non‐covalent interactions, which allows the construction of two…”
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N‑Heterocyclic Carbene Based Nickel and Palladium Complexes: A DFT Comparison of the Mizoroki–Heck Catalytic Cycles by Menezes da Silva, Vitor H, Braga, Ataualpa A. C, Cundari, Thomas R

“…A theoretical investigation has been performed on nickel– and palladium–N-heterocyclic carbene (NHC) complexes in the Mizoroki–Heck (MH) reaction. A density…”
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Heck arylation of acyclic olefins employing arenediazonium salts and chiral N,N ligands: new mechanistic insights from quantum-chemical calculations by da Silva, Vitor H. Menezes, Oliveira, Caio C., Correia, Carlos Roque D., Braga, Ataualpa A. C.

“…A quantum-chemical study based on the Kohn–Sham density functional theory (DFT) has been performed in order to investigate the asymmetric Heck–Matsuda (HM)…”
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Mechanisms for the Oxidative Addition of Palladium(0) Complexes to Arenediazonium Salts by Esteves, Henrique, Menezes da Silva, Vitor H., Correia, Carlos R. D., Braga, Ataualpa A. C.

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(N-Heterocyclic Carbene)-Palladate Complexes in Anionic Mizoroki–Heck Coupling Cycles: A Combined Experimental and Computational Study by Guest, Daniel, Menezes da Silva, Vitor H, de Lima Batista, Ana P, Roe, S. Mark, Braga, Ataualpa A. C, Navarro, Oscar

“…The reaction of complex (SIPr)­PdCl2(TEA) (SIPr = 1,3-bis­(2,6-diisopropylphenyl)-2-imidazolidinylidene, TEA = triethylamine) with tertbutylammoniun chloride…”
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Enantioselective Synthesis of Isoindolones via Palladium – Catalyzed Intramolecular Heck‐Mizoroki Reactions of Endocyclic Enamides Using N,N‐Ligands by Wiethan, Carson, Braga, Ingredy B., Menezes da Silva, Vitor H., Batista, João M., Correia, Carlos Roque D.

“…The enantioselective synthesis of isoindolones via Heck‐Mizoroki reactions of endocyclic enamides using a palladium‐bis(oxazoline) catalyst system is…”
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Intermolecular Noncovalent Hydroxy-Directed Enantioselective Heck Desymmetrization of Cyclopentenol: Computationally Driven Synthesis of Highly Functionalized cis-4-Arylcyclopentenol Scaffolds by de Oliveira Silva, Juliana, Angnes, Ricardo A, Menezes da Silva, Vitor H, Servilha, Bruno M, Adeel, Muhammad, Braga, Ataualpa A. C, Aponick, Aaron, Correia, Carlos Roque D

“…New computationally driven protocols for the Heck desymmetrization of 3-cyclopenten-1-ol with aryldiazonium tetrafluoroborates were developed. These new…”
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Characterizing structures, energetics, and spectra of species on the 1,3[H, C, As] potential energy surfaces: A high-level theoretical contribution by Menezes da Silva, Vitor H., Ornellas, Fernando R.

“…The ground and the low lying electronic states of structures on the 1,3[H, C, As] potential energy surfaces were investigated with the highly correlated…”
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Theoretical study on selectivity trends in (N‐heterocyclic carbene)‐Pd catalyzed mizoroki–heck reactions: Exploring density functionals methods and molecular models by Menezes da Silva, Vitor H., de Lima Batista, Ana Paula, Navarro, Oscar, Braga, Ataualpa A. C.

“…The regioselectivity of the NHC‐Pd catalyzed Heck coupling reaction between phenyl bromide and styrene has been investigated using the density functional…”
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3‐Alkenyltyrosines Accessed by Suzuki–Miyaura Coupling: A Key Intermediate in the Synthesis and Mechanistic Study of Povarov Multicomponent Reactions by Vasconcelos, Stanley N. S., Menezes da Silva, Vitor H., Braga, Ataualpa A. C., Shamim, Anwar, Souza, Frederico B., Pimenta, Daniel C., Stefani, Hélio A.

“…3‐Vinyl and 3‐stilbenyl tyrosine derivatives, accessed by the Suzuki–Miyaura coupling reaction in good yields, are presented. These synthetic olefins then…”
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Iodine(III)‐Mediated Ring Contraction of 1,2‐Dihydronaphthalenes: Mechanistic Insight by Computational Investigations by da Silva, Vitor H. Menezes, Silva, Luiz F., Braga, Ataualpa A. C.

“…The metal‐free synthesis of the trans‐1,3‐disubstituted indanes through the ring contraction of 1,2‐dihydronaphtalenes, promoted by PhI(OH)Ts (HTIB or Koser's…”
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Correction to “Mechanisms for the Oxidative Addition of Palladium(0) Complexes to Arenediazonium Salts” by Esteves, Henrique, Menezes da Silva, Vitor H., Correia, Carlos R. D., Braga, Ataualpa A. C.

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DFT perspective on the selectivity and mechanism of ligand-free Heck reaction involving allylic esters and arenediazonium salts by Menezes da Silva, Vitor H., Morgon, Nelson H., Correia, Carlos R.D., Braga, Ataualpa A.C.

“…A density functional theory (DFT) study has been carried out with respect to the cationic and neutral mechanism of ligand-free Heck-Matsuda cross-coupling…”
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New insights into the electrophilic aromatic substitution mechanism of tricyanovinylation reaction involving tetracyanoethylene and N,N-dimethylaniline: An interpretation based on density functional theory calculations by Menezes da Silva, Vitor H., Monezi, Natália M., Ando, Rômulo A., Braga, Ataualpa A.C.

“…The reaction between tetracyanoethylene and N,N-dimethylaniline was extensively studied in early of 1960's. Surprisingly, the role of intermediate species…”
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