Search Results - "Májek, Michal"

Deracemization of Binaphthyl by Suzuki Diarylation: The Role of Electronic and Steric Effects by Bulko, Filip, Májek, Michal, Putala, Martin

“…We report a Suzuki 2,2′-diarylation of the racemic 2,2′-diiodo-1,1′-binaphthyl which proceeds with deracemization via a pallada­(IV)­cyclic intermediate,…”
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Mechanistic Perspectives on Organic Photoredox Catalysis for Aromatic Substitutions by Majek, Michal, Jacobi von Wangelin, Axel

“…Photoredox catalysis has emerged as a powerful tool for the utilization of visible light to drive chemical reactions between organic molecules that exhibit two…”
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Applications of Electrophotocatalysis in C−H Functionalization of Organic Molecules by Andrejčák, Samuel, Májek, Michal

“…Electrophotocatalysis (EPC) has evolved as a new scientific discipline around the boundary of highly active fields: electrochemistry and photocatalysis. EPC…”
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Discovery of new tetrazines for bioorthogonal reactions with strained alkenes via computational chemistry by Májek, Michal, Trtúšek, Matej

“…Tetrazines are widely employed reagents in bioorthogonal chemistry, as they react readily with strained alkenes in inverse electron demand Diels-Alder…”
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Metal-Free Carbonylations by Photoredox Catalysis by Majek, Michal, Jacobi von Wangelin, Axel

“…The synthesis of benzoates from aryl electrophiles and carbon monoxide is a prime example of a transition‐metal‐catalyzed carbonylation reaction which is…”
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Mechanochemical Radical Boronation of Aryl Diazonium Salts Promoted by Sodium Chloride by Andrejčák, Samuel, Kisszékelyi, Péter, Májek, Michal, Šebesta, Radovan

“…Arylboronates are helpful building blocks in organic synthesis. Here, we present an efficient mechanochemical synthesis of arylboronates from arene diazonium…”
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The Electrochemically Catalyzed Newman-Kwart Rearrangement: Mechanism, Structure-Reactivity Relationship, and Parallels to Photoredox Catalysis by Roesel, Arend F, Ugandi, Mihkel, Huyen, Nguyen Thi Thu, Majek, Michal, Broese, Timo, Roemelt, Michael, Francke, Robert

“…The facilitation of redox-neutral reactions by electrochemical injection of holes and electrons, also known as 'electrochemical catalysis', is a little…”
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How to Harness Electrochemical Mediators for Photocatalysis – A Systematic Approach Using the Phenanthro[9,10‐d]imidazole Framework as a Test Case by Enders, Patrick, Májek, Michal, Lam, Chiu Marco, Little, R. Daniel, Francke, Robert

“…In view of the frequently cited similarities between photo‐ and electrocatalysis, large overlaps are to be expected in terms of the mediators used. However,…”
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On the mechanism of photocatalytic reactions with eosin Y by Majek, Michal, Filace, Fabiana, von Wangelin, Axel Jacobi

“…A combined spectroscopic, synthetic, and apparative study has allowed a more detailed mechanistic rationalization of several recently reported eosin…”
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Application of Visible-to-UV Photon Upconversion to Photoredox Catalysis: The Activation of Aryl Bromides by Majek, Michal, Faltermeier, Uwe, Dick, Bernhard, Pérez-Ruiz, Raúl, Jacobi von Wangelin, Axel

“…The activation of aryl–Br bonds was achieved by sequential combination of a triplet–triplet annihilation process of the organic dyes, butane‐2,3‐dione and…”
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Dichromatic Photocatalytic Substitutions of Aryl Halides with a Small Organic Dye by Neumeier, Michael, Sampedro, Diego, Májek, Michal, de la Peña O'Shea, Víctor A., Jacobi von Wangelin, Axel, Pérez‐Ruiz, Raúl

“…Photocatalytic bond activations are generally limited by the photon energy and the efficiency of energy and electron transfer processes. Direct two‐photon…”
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Aromatic Chlorosulfonylation by Photoredox Catalysis by Májek, Michal, Neumeier, Michael, Jacobi von Wangelin, Axel

“…Visible‐light photoredox catalysis enables the efficient synthesis of arenesulfonyl chlorides from anilines. The new protocol involves the convenient in situ…”
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Iodophenylsulfonates and Iodobenzoates as Redox‐Active Supporting Electrolytes for Electrosynthesis by Roesel, Arend F., Broese, Timo, Májek, Michal, Francke, Robert

“…Hypervalent iodine compounds constitute a popular class of reagents in organic chemistry. Regardless of whether they are generated in situ from an iodoarene…”
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Reaction Outcome Critically Dependent on the Method of Workup: An Example from the Synthesis of 1‑Isoquinolones by Matouš, Petr, Májek, Michal, Kysilka, Ondřej, Kuneš, Jiří, Maříková, Jana, Růžička, Aleš, Pour, Milan, Kočovský, Pavel

“…A striking dependence on the method of workup has been found for annulation of benzonitriles ArCN to N-methyl 2-toluamide (1), facilitated by n-BuLi (2…”
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Visible Light Driven Hydro-/Deuterodefunctionalization of Anilines by Majek, Michal, Filace, Fabiana, Jacobi von Wangelin, Axel

“…The defunctionalization of anilines is an important strategy in aromatic‐substitution chemistry. Herein, we report on visible light mediated hydro‐ and…”
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Discovery of new tetrazines for bioorthogonal reactions with strained alkenes computational chemistry by Májek, Michal, Trtúšek, Matej

“…Tetrazines are widely employed reagents in bioorthogonal chemistry, as they react readily with strained alkenes in inverse electron demand Diels-Alder…”
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Front Cover: How to Harness Electrochemical Mediators for Photocatalysis – A Systematic Approach Using the Phenanthro[9,10‐d]imidazole Framework as a Test Case (ChemCatChem 1/2023) by Enders, Patrick, Májek, Michal, Lam, Chiu Marco, Little, R. Daniel, Francke, Robert

“…The Front Cover portrays a phenanthrolimidazole molecule (a known electrochemical mediator) as a hiker crossing the boundaries between the fields of electro‐…”
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How to Harness Electrochemical Mediators for Photocatalysis – A Systematic Approach Using the Phenanthroimidazole Framework as a Test Case by Enders, Patrick, Májek, Michal, Chiu, Marco Lam, Little, R Daniel, Francke, Robert

“…In view of the frequently cited similarities between photo‐ and electrocatalysis, large overlaps are to be expected in terms of the mediators used. However,…”
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Aryl Pyrazoles from Photocatalytic Cycloadditions of Arenediazonium by Cardinale, Luana, Neumeier, Michael, Majek, Michal, Jacobi von Wangelin, Axel

“…A photocatalytic synthesis of 1,5-diaryl pyrazoles from arenediazoniums and arylcyclopropanols is reported. The reaction proceeded under mild conditions (rt,…”
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Ambient-Light-Mediated Copper-Catalyzed CC and CN Bond Formation by Majek, Michal, JacobivonWangelin, Axel

“…Bringing to light: The rediscovery of visible light as an abundant energy source for organic reactions has most recently brought copper-catalyzed coupling…”
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