Search Results - "Oliveira, João C. A"
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Electroremovable Traceless Hydrazides for Cobalt-Catalyzed Electro-Oxidative C–H/N–H Activation with Internal Alkynes
Published in Journal of the American Chemical Society (27-06-2018)“…Electrochemical oxidative C–H/N–H activations have been accomplished with a versatile cobalt catalyst in terms of [4 + 2] annulations of internal alkynes. The…”
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2
Cobalt-Catalyzed Enantioselective C–H Arylation of Indoles
Published in Journal of the American Chemical Society (19-01-2022)“…Atropoisomeric (hetero)biaryls are scaffolds with increasing importance in the pharmaceutical and agrochemical industries. Although it is the most obvious…”
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3
Flow Rhodaelectro-Catalyzed Alkyne Annulations by Versatile C–H Activation: Mechanistic Support for Rhodium(III/IV)
Published in Journal of the American Chemical Society (30-10-2019)“…A flow-metallaelectro-catalyzed C–H activation was realized in terms of robust rhodaelectro-catalyzed alkyne annulations. To this end, a modular electro-flow…”
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4
Enantioselective Cobalt(III)‐Catalyzed C−H Activation Enabled by Chiral Carboxylic Acid Cooperation
Published in Angewandte Chemie International Edition (19-11-2018)“…The enantioselective cobalt(III)‐catalyzed C−H alkylation was achieved through the design of a novel chiral acid. The cobalt(III)‐catalyzed enantioselective…”
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5
Enantioselective Pallada‐Electrocatalyzed C−H Activation by Transient Directing Groups: Expedient Access to Helicenes
Published in Angewandte Chemie International Edition (03-08-2020)“…Asymmetric pallada‐electrocatalyzed C−H olefinations were achieved through the synergistic cooperation with transient directing groups. The electrochemical,…”
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6
Enantioselective Ruthenium-Catalyzed C–H Alkylations by a Chiral Carboxylic Acid with Attractive Dispersive Interactions
Published in Organic letters (02-04-2021)“…Asymmetric ruthenium-catalyzed C–H alkylations were enabled by a chiral C2-symmetric carboxylic acid. The mild cooperative ruthenium(II) catalysis set the…”
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7
Synergistic Manganese(I) C−H Activation Catalysis in Continuous Flow: Chemoselective Hydroarylation
Published in Angewandte Chemie International Edition (20-11-2017)“…Chemoselective hydroarylations were accomplished by a novel synergistic Brønsted acid/manganese(I)‐catalyzed C−H activation manifold. Thus, alkynes bearing…”
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Palladium-Catalyzed Electrooxidative Double C–H Arylation
Published in Journal of the American Chemical Society (10-01-2024)“…The electrochemical transition metal-catalyzed cross-dehydrogenative reaction has emerged as a promising platform to achieve a sustainable and atom-economic…”
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9
Enantioselective palladaelectro-catalyzed C-H olefinations and allylations for N-C axial chirality
Published in Chemical science (Cambridge) (03-11-2021)“…Enantioselective palladaelectro-catalyzed C-H alkenylations and allylations were achieved with easily-accessible amino acids as transient directing groups…”
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10
Reactivity-Controlling Factors in Carboxylate-Assisted C–H Activation under 4d and 3d Transition Metal Catalysis
Published in ACS catalysis (18-09-2020)“…Detailed density functional theory calculations provide valuable insight into reactivity-controlling factors in transition metal-catalyzed C–H activation by…”
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11
Rhodaelectro-catalyzed access to chromones via formyl C–H activation towards peptide electro-labeling
Published in Nature communications (05-08-2021)“…Chromones represent a privileged scaffold in medicinal chemistry and are an omnipresent structural motif in natural products. Chemically encoded non-natural…”
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12
Electro-oxidative Intermolecular Allylic C(sp3)–H Aminations
Published in Journal of organic chemistry (19-11-2021)“…The oxidative intermolecular nitrogenation of C(sp3)–H bonds represents one of the most straightforward strategies to construct nitrogen-containing molecules…”
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13
Iridium‐Catalyzed Electrooxidative C−H Activation by Chemoselective Redox‐Catalyst Cooperation
Published in Angewandte Chemie International Edition (22-10-2018)“…Iridium‐catalyzed electrochemical C−H activation was accomplished within a cooperative catalysis manifold, setting the stage for electrooxidative C−H…”
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1,4‐Iron Migration for Expedient Allene Annulations through Iron‐Catalyzed C−H/N−H/C−O/C−H Functionalizations
Published in Angewandte Chemie International Edition (25-06-2018)“…C−H activation bears great potential for enabling sustainable molecular syntheses in a step‐ and atom‐economical manner, with major advances having been…”
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15
Asymmetric Iron‐Catalyzed C−H Alkylation Enabled by Remote Ligand meta‐Substitution
Published in Angewandte Chemie International Edition (06-11-2017)“…Highly enantioselective iron‐catalyzed C−H alkylations by inner‐sphere C−H activation were accomplished with ample scope. High levels of enantiocontrol proved…”
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Rhodaelectrocatalysis for Annulative C−H Activation: Polycyclic Aromatic Hydrocarbons through Versatile Double Electrocatalysis
Published in Angewandte Chemie International Edition (06-05-2019)“…Rapid access to structurally diversified polycyclic aromatic hydrocarbons (PAHs) in a controlled manner is of key significance in materials sciences. Herein,…”
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17
Catalyst‐ and Reagent‐Free Electrochemical Azole C−H Amination
Published in Chemistry : a European journal (03-09-2018)“…Catalyst‐ and chemical oxidant‐free electrochemical azole C−H aminations were accomplished via cross‐dehydrogenative C−H/N−H functionalization. The…”
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Enantioselective Cobaltaphotoredox-Catalyzed C–H Activation
Published in Journal of the American Chemical Society (28-08-2024)“…The quest for sustainable strategies in molecular synthesis has spurred the emergence of photocatalysis as a particularly powerful technique. In recent years,…”
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Electrochemical Enantioselective C–H Annulation by Achiral Rhodium(III)/Chiral Brønsted Base Domino Catalysis
Published in ACS catalysis (07-06-2024)“…Rhodium(III)-catalyzed enantioselective C–H activation has emerged as a powerful tool for assembling enabling chiral molecules. However, this approach is…”
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20
Peptide late-stage C(sp)-H arylation by native asparagine assistance without exogenous directing groups
Published in Chemical science (Cambridge) (12-08-2020)“…There is a strong demand for novel native peptide motifs for post-synthetic modifications of peptides without pre-installation and subsequent removal of…”
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