Search Results - "Szabó, Kálmán J."

Recent Advances in the Preparation and Application of Allylboron Species in Organic Synthesis by Diner, Colin, Szabó, Kálmán J

“…In this Perspective we will highlight the most important recent breakthroughs in selective allyl­boron chemistry (both the synthesis and application of these…”
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Catalysis by Palladium Pincer Complexes by Selander, Nicklas, Szabó, Kálmán J

“…Selander and Szabo explore catalysis using palladium pincer complexes…”
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Synthesis of Adjacent Quaternary Stereocenters by Catalytic Asymmetric Allylboration by Alam, Rauful, Vollgraff, Tobias, Eriksson, Lars, Szabó, Kálmán J

“…Allylboration of ketones with γ-disubstituted allyl­boronic acids is performed in the presence of chiral BINOL derivatives. The reaction is suitable for…”
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Mechanism of Asymmetric Homologation of Alkenylboronic Acids with CF3‑Diazomethane via Borotropic Rearrangement by Biosca, Maria, Szabó, Kálmán J., Himo, Fahmi

“…Density functional theory calculations have been performed to investigate the mechanism for the BINOL-catalyzed asymmetric homologation of alkenylboronic acids…”
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Fluorinative ring-opening of cyclopropanes by hypervalent iodine reagents. An efficient method for 1,3-oxyfluorination and 1,3-difluorination by Ilchenko, Nadia O, Hedberg, Martin, Szabó, Kálmán J

“…A new method is presented for 1,3-difluorination and 1,3-oxyfluorination reactions. The process is based on iodonium mediated opening of 1,1-disubstituted…”
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Electrophilic Fluorination of Alkenes via Bora‐Wagner–Meerwein Rearrangement. Access to β‐Difluoroalkyl Boronates by Wang, Qiang, Biosca, Maria, Himo, Fahmi, Szabó, Kálmán J.

“…The electrophilic fluorination of geminal alkyl substituted vinyl‐Bmida derivatives proceeds via bora‐Wagner–Meerwein rearrangement. According to DFT modelling…”
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Synthesis of Benzyl‑, Allyl‑, and Allenyl-boronates via Copper-Catalyzed Borylation of Alcohols by Mao, Lujia, Szabó, Kálmán J, Marder, Todd B

“…Alcohols are among the most abundant and readily available organic feedstocks in industrial processes. The direct catalytic functionalization of sp 3 C–O bonds…”
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Three-Component Approach to Densely Functionalized Trifluoromethyl Allenols by Asymmetric Organocatalysis by Deliaval, Marie, Jayarajan, Ramasamy, Eriksson, Lars, Szabó, Kálmán J.

“…We have developed a new three-component catalytic coupling reaction of alkynyl boronates, diazomethanes, and aliphatic/aromatic ketones in the presence of…”
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Enantioselective Construction of Tertiary Fluoride Stereocenters by Organocatalytic Fluorocyclization by Wang, Qiang, Lübcke, Marvin, Biosca, Maria, Hedberg, Martin, Eriksson, Lars, Himo, Fahmi, Szabó, Kálmán J

“…1,1-Disubstituted styrenes with internal oxygen and nitrogen nucleophiles undergo oxidative fluorocyclization reactions with in situ generated chiral…”
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Electrophilic Trifluoromethylation by Copper-Catalyzed Addition of CF3-Transfer Reagents to Alkenes and Alkynes by Janson, Pär G, Ghoneim, Ibrahim, Ilchenko, Nadia O, Szabó, Kálmán J

“…Regio- and stereoselective Cu-catalyzed addition of the above hypervalent iodine reagent to alkynes and alkenes was achieved. In the presence of CuI, the…”
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Palladium-Catalyzed Synthesis and Isolation of Functionalized Allylboronic Acids: Selective, Direct Allylboration of Ketones by Raducan, Mihai, Alam, Rauful, Szabó, Kálmán J.

“…Textbook revision: Allylboronic acids, which are easily prepared from allylic alcohols, react readily and selectively with ketones without Lewis acid catalysts…”
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Synthesis of Vinyl‑, Allyl‑, and 2‑Boryl Allylboronates via a Highly Selective Copper-Catalyzed Borylation of Propargylic Alcohols by Mao, Lujia, Bertermann, Rüdiger, Emmert, Katharina, Szabó, Kálmán J, Marder, Todd B

“…An efficient methodology for the synthesis of vinyl-, allyl-, and (E)-2-boryl allylboronates from propargylic alcohols via Cu-catalyzed borylation under mild…”
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Trifluoromethylthiolation-Based Bifunctionalization of Diazocarbonyl Compounds by Rhodium Catalysis by Lübcke, Marvin, Yuan, Weiming, Szabó, Kálmán J

“…A new Rh-catalyzed, three-component reaction for the oxytrifluoromethylthiolation of α-diazoketones was developed. The SCF3 functionality was introduced using…”
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Organocatalytic Synthesis of α‑Trifluoromethyl Allylboronic Acids by Enantioselective 1,2-Borotropic Migration by Jonker, Sybrand J. T, Jayarajan, Ramasamy, Kireilis, Tautvydas, Deliaval, Marie, Eriksson, Lars, Szabó, Kálmán J

“…Chiral α-substituted allylboronic acids were synthesized by asymmetric homologation of alkenylboronic acids using CF3/TMS-diazomethanes in the presence of…”
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Asymmetric Organocatalytic Homologation: Access to Diverse Chiral Trifluoromethyl Organoboron Species by Jayarajan, Ramasamy, Kireilis, Tautvydas, Eriksson, Lars, Szabó, Kálmán J.

“…A broad range of aliphatic, aromatic, and heterocyclic boronic acids were successfully homologated using trifluorodiazoethane in the presence of BINOL…”
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Sulfenofunctionalization of Chiral α‐Trifluoromethyl Allylboronic Acids: Asymmetric Synthesis of SCF3, SCF2R, SCN and SAr Compounds by Wang, Qiang, Nilsson, Tomas, Eriksson, Lars, Szabó, Kálmán J.

“…We report herein a new method for the synthesis of densely functionalized chiral allyl SCF3, SCF2R, SCN and SAr species with a separate CF3 functionality. The…”
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Mechanistic Investigation of the Palladium-Catalyzed Synthesis of Allylic Silanes and Boronates from Allylic Alcohols by Larsson, Johanna M, Szabó, Kálmán J

“…The mechanism of the palladium-catalyzed synthesis of allylic silanes and boronates from allylic alcohols was investigated. 1H, 29Si, 19F, and 11B NMR…”
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Metathesis Mechanism of Zinc-Catalyzed Fluorination of Alkenes with Hypervalent Fluoroiodine by Zhang, Jiji, Szabó, Kálmán J, Himo, Fahmi

“…Density functional theory calculations are used to unravel the mechanism of the Zn-catalyzed fluorocyclization reaction of alkenes using fluoro-benziodoxole…”
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Trifluoromethylthiolation, Trifluoromethylation, and Arylation Reactions of Difluoro Enol Silyl Ethers by Jiang, Xingguo, Meyer, Denise, Baran, Dominik, Cortés González, Miguel A, Szabó, Kálmán J

“…This study reports a new application area of difluoro enol silyl ethers, which can be easily obtained from trifluoromethyl ketones. The main focus has been…”
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Mechanism and Stereoselectivity of the BINOL-Catalyzed Allylboration of Skatoles by Huang, Genping, Diner, Colin, Szabó, Kálmán J, Himo, Fahmi

“…Density functional theory calculations have been performed to investigate the binaphthol-catalyzed allylboration of skatoles. The high stereoselectivity…”
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