Works matching DE "UMPOLUNG"

Results: 237

Photocatalyzed Three‐Component Difluoroalkyl‐Halogenation of Electron‐Deficient Alkenes via a Halogen α‐Nucleophilic Addition.

Published in:

Chemistry - A European Journal, 2025, v. 31, n. 28, p. 1, doi. 10.1002/chem.202500434

By:

Liu, Xiaoxiao;
Chao, Di;
Liu, Qingfeng;
Ma, Yingchao;
Zhang, Zhiguo;
Liu, Tongxin;
Zhang, Xingjie;
Zhang, Guisheng

Publication type:

Article

Formal Umpolung Strategy for the Synthesis of α‐Branched Amides via α‐Sulfenylnitro Compounds.

Published in:

Chemistry - A European Journal, 2025, v. 31, n. 25, p. 1, doi. 10.1002/chem.202404741

By:

Shiomi, Shinya;
Shintani, Mao;
Yoshida, Masahiro

Publication type:

Article

Effects of electrostatic correlations and ion–solvent interactions of finite-sized ions on the electrophoresis of a soft particle.

Published in:

Journal of Fluid Mechanics, 2025, v. 1006, p. 1, doi. 10.1017/jfm.2025.17

By:

Mondal, Bapan;
Bhattacharyya, Somnath

Publication type:

Article

Light‐Dependent Amide or Thioamide Formation of Acylsilanes with Amines using Elemental Sulfur.

Published in:

Chemistry - A European Journal, 2025, v. 31, n. 12, p. 1, doi. 10.1002/chem.202404555

By:

Li, Yuanhang;
Ye, Haiting;
Wang, Shaohong;
Xu, Silong;
Lear, Martin J.;
Houk, Kendall N.;
Ma, Pengchen;
Li, Jing

Publication type:

Article

Exploring Divergent Role of Amine in Chemodivergent Synthesis of 4‐Alkyl/Aryl‐3H‐1,2‐Dithiole‐3‐Thione and Ketothioamide.

Published in:

Chemistry - A European Journal, 2025, v. 31, n. 12, p. 1, doi. 10.1002/chem.202404346

By:

Gupta, Ankush;
Gururaja, Guddeangadi N.

Publication type:

Article

Nucleophilic Functionalization of Activated P4 in [CpFe(CO)2‐(η1‐P4)][Al(ORF)4] with Alcohols R‐OH.

Published in:

Chemistry - A European Journal, 2025, v. 31, n. 11, p. 1, doi. 10.1002/chem.202403959

By:

Roehner, David;
Ramos, Elise;
Dabringhaus, Philipp;
Scherer, Harald;
Krossing, Ingo

Publication type:

Article

Redox Cycling with Tellurium. Si−H Bond Activation by a Lewis Superacidic Tellurenyl Cation.

Published in:

Chemistry - A European Journal, 2025, v. 31, n. 5, p. 1, doi. 10.1002/chem.202403496

By:

Hejda, Martin;
Hupf, Emanuel;
Růžička, Aleš;
Dostál, Libor;
Beckmann, Jens

Publication type:

Article

Redox‐Induced Aromatic Substitution: A Study on Guanidino‐Functionalized Aromatics.

Published in:

Chemistry - A European Journal, 2024, v. 30, n. 72, p. 1, doi. 10.1002/chem.202403080

By:

Wild, Ute;
Engels, Eliane;
Hübner, Olaf;
Kaifer, Elisabeth;
Himmel, Hans‐Jörg

Publication type:

Article

Catalytic Generation of Benzyl Anions from Aryl Ketones Utilizing [1,2]‐Phospha‐Brook Rearrangement and Their Application to Synthesis of Tertiary Benzylic Alcohols.

Published in:

Chemistry - A European Journal, 2024, v. 30, n. 69, p. 1, doi. 10.1002/chem.202402967

By:

Kondoh, Azusa;
Suzuki, Hirochika;
Hirozane, Takayuki;
Terada, Masahiro

Publication type:

Article

Copper‐Mediated N‐Trifluoromethylation of O‐Benzoylhydroxylamines.

Published in:

Chemistry - A European Journal, 2024, v. 30, n. 6, p. 1, doi. 10.1002/chem.202303314

By:

Fleetwood, Thomas D.;
Kerr, William J.;
Mason, Joseph

Publication type:

Article

Spectroscopic and Computational Study of the Organocatalytic Umpolung of Bromocations: An Accelerated Stereoselective Dibromination Protocol**.

Published in:

Chemistry - A European Journal, 2023, v. 29, n. 45, p. 1, doi. 10.1002/chem.202300675

By:

Panda, Jeetendra;
Sahoo, Jigyansa;
Dutta, Juhi;
Biswal, Himansu Sekhar;
Sahoo, Gokarneswar

Publication type:

Article

One‐Pot Synthesis of Diverse 1,4‐[60]Fullerephenols via Three‐Component Umpolung Cascade Coupling of Phenols, C60, and Nucleophiles.

Published in:

Chemistry - A European Journal, 2023, v. 29, n. 35, p. 1, doi. 10.1002/chem.202300391

By:

Zhang, Jun‐Xiang;
Wu, Yuan‐Ze;
Chen, Dong‐Mei;
Xuan, Jun;
Li, Fei

Publication type:

Article

Exploring the Lewis Acidity and Reactivity of Neutral Pentacoordinate Dithienophospholes.

Published in:

Chemistry - A European Journal, 2023, v. 29, n. 32, p. 1, doi. 10.1002/chem.202300173

By:

Asok, Nayanthara;
Zondag, Benjamen A.;
Pradhan, Ekadashi;
Odagwe, Mary;
LeBlanc, Jesse;
Walsh, Joshua C.;
Bodwell, Graham J.;
Zeng, Tao;
Baumgartner, Thomas

Publication type:

Article

An Umpolung Approach to Acyclic 1,4‐Dicarbonyl Amides via Photoredox‐Generated Carbamoyl Radicals.

Published in:

Chemistry - A European Journal, 2023, v. 29, n. 28, p. 1, doi. 10.1002/chem.202300403

By:

Williams, Jason D.;
Leach, Stuart G.;
Kerr, William J.

Publication type:

Article

A Simple Four‐Step Synthesis of the Potato Alkaloid Demissidine from the Common Sapogenin Tigogenin.

Published in:

Chemistry - A European Journal, 2023, v. 29, n. 20, p. 1, doi. 10.1002/chem.202203314

By:

Baj, Aneta;
Kaewnok, Nirawit;
Rivas‐Loaiza, Juan A.;
Szymańska, Magdalena;
Witkowski, Stanisław;
Wojtkielewicz, Agnieszka;
Morzycki, Jacek W.

Publication type:

Article

Oxidative N‐Heterocyclic Carbene Catalysis.

Published in:

Chemistry - A European Journal, 2023, v. 29, n. 4, p. 1, doi. 10.1002/chem.202202467

By:

De Risi, Carmela;
Brandolese, Arianna;
Di Carmine, Graziano;
Ragno, Daniele;
Massi, Alessandro;
Bortolini, Olga

Publication type:

Article

Divergent Copper‐salt‐controlled Reactions of Donor‐Acceptor Cyclopropanes and N‐Fluorobenzene Sulfonimide: Access to the 1,3‐Haloamines and Aminoindanes.

Published in:

Chemistry - A European Journal, 2023, v. 29, n. 3, p. 1, doi. 10.1002/chem.202202544

By:

Liu, Lingyan;
Wang, Xiao;
Xiao, Weiguo;
Chang, Weixing;
Li, Jing

Publication type:

Article

Umpolung Reactivity of Imine Ester: Visible‐Light Mediated Transfer Hydrogenation of α‐Aryl Imino Esters by Phenylsilane and Water.

Published in:

Chemistry - A European Journal, 2022, v. 28, n. 68, p. 1, doi. 10.1002/chem.202202460

By:

Wu, Wei;
Zhao, HengYuan;
Chen, Jingchao;
Zhang, FuQin;
Fan, Baomin

Publication type:

Article

Water Reduction and Dihydrogen Addition in Aqueous Conditions With ansa‐Phosphinoborane.

Published in:

Chemistry - A European Journal, 2022, v. 28, n. 61, p. 1, doi. 10.1002/chem.202201927

By:

Sorochkina, Kristina;
Chernichenko, Konstantin;
Zhivonitko, Vladimir V.;
Nieger, Martin;
Repo, Timo

Publication type:

Article

An Expedient Method for the Umpolung Coupling of Enols with Heteronucleophiles**.

Published in:

Chemistry - A European Journal, 2022, v. 28, n. 44, p. 1, doi. 10.1002/chem.202201000

By:

García‐Vázquez, Víctor;
Carretero Cerdán, Alba;
Sanz‐Marco, Amparo;
Gómez‐Bengoa, Enrique;
Martín‐Matute, Belén

Publication type:

Article

Formal Umpolung Addition of Phosphites to 2‐Azaaryl Ketones under Chiral Brønsted Base Catalysis: Enantioselective Protonation Utilizing [1,2]‐Phospha‐Brook Rearrangement.

Published in:

Chemistry - A European Journal, 2022, v. 28, n. 42, p. 1, doi. 10.1002/chem.202201240

By:

Kondoh, Azusa;
Hirozane, Takayuki;
Terada, Masahiro

Publication type:

Article

Bis(amino)cyclopropenylidenes as Organocatalysts for Acyl Anion and Extended Umpolung Reactions.

Published in:

Angewandte Chemie, 2013, v. 125, n. 48, p. 12883, doi. 10.1002/ange.201307167

By:

Wilde, Myron M. D.;
Gravel, Michel

Publication type:

Article

Wave-like Formation of Hot Loop Arcades.

Published in:

Solar Physics, 2015, v. 290, n. 10, p. 2909, doi. 10.1007/s11207-015-0769-x

By:

Reva, A.;
Shestov, S.;
Zimovets, I.;
Bogachev, S.;
Kuzin, S.

Publication type:

Article

Formation of a Flare-Productive Active Region: Observation and Numerical Simulation of NOAA AR 11158.

Published in:

Solar Physics, 2014, v. 289, n. 9, p. 3351, doi. 10.1007/s11207-014-0502-1

By:

Toriumi, S.;
Iida, Y.;
Kusano, K.;
Bamba, Y.;
Imada, S.

Publication type:

Article

Energy and helicity evolution in a flux emergence simulation.

Published in:

Astronomy & Astrophysics / Astronomie et Astrophysique, 2024, v. 690, p. 1, doi. 10.1051/0004-6361/202450924

By:

Moraitis, K.;
Archontis, V.;
Chouliaras, G.

Publication type:

Article

Formation of an observed eruptive flux rope above the torus instability threshold through tether-cutting magnetic reconnection.

Published in:

Astronomy & Astrophysics / Astronomie et Astrophysique, 2023, v. 677, p. 1, doi. 10.1051/0004-6361/202346267

By:

Prasad, A.;
Kumar, S.;
Sterling, A. C.;
Moore, R. L.;
Aulanier, G.;
Bhattacharyya, R.;
Hu, Q.

Publication type:

Article

Polarity assessment of reflection seismic data: a Deep Learning approach.

Published in:

Bulletin of Geophysics & Oceanography (BGO), 2022, v. 63, n. 4, p. 693, doi. 10.4430/bgo00409

By:

RONCORONI, G.;
FORTE, E.;
BORTOLUSSI, L.;
GASPERINI, L.;
PIPAN, M.

Publication type:

Article

莺歌海盆地乐东区深层暗点型目标敏感属性优化方法.

Published in:

Natural Gas Geoscience, 2019, v. 30, n. 3, p. 407, doi. 10.11764/j.issn.1672-1926.2018.12.022

By:

刘仕友;
李洋森;
周凡;
孙万元;
付琛

Publication type:

Article

盖层厚度对天然气封闭能力的实验分析.

Published in:

Natural Gas Geoscience, 2019, v. 30, n. 3, p. 322, doi. 10.11764/j.issn.1672-1926.2018.11.012

By:

林潼;
王孝明;
张璐;
曾旭;
张帅;
程煜宗

Publication type:

Article

Polarity inversion and growth mechanism of AlN layer grown on nitrided sapphire substrate using Ga-Al liquid-phase epitaxy.

Published in:

Physica Status Solidi (B), 2015, v. 252, n. 4, p. 743, doi. 10.1002/pssb.201451426

By:

Adachi, Masayoshi;
Takasugi, Mari;
Sugiyama, Masashi;
Iida, Junji;
Tanaka, Akikazu;
Fukuyama, Hiroyuki

Publication type:

Article

Free-electron concentration and polarity inversion domains in plasmonic (Zn,Ga)O.

Published in:

Physica Status Solidi (B), 2015, v. 252, n. 3, p. 607, doi. 10.1002/pssb.201451533

By:

Sadofev, Sergey;
Kalusniak, Sascha;
Schäfer, Peter;
Kirmse, Holm;
Henneberger, Fritz

Publication type:

Article

Front Cover: Synthesis of 2H‐1,4‐Oxazin‐3(4H)‐One Utilizing Umpolung Reaction to α‐Hydrazonoketone (Asian J. Org. Chem. 3/2025).

Published in:

Asian Journal of Organic Chemistry, 2025, v. 14, n. 3, p. 1, doi. 10.1002/ajoc.202580301

By:

Mizota, Isao;
Oshima, Keiji;
Hoshiai, Nozomi;
Yamamoto, Ayaki;
Mitani, Masaki;
Batool, Rabbia;
Liu, Bo‐Tau;
Shimizu, Makoto

Publication type:

Article

Synthesis of 2H‐1,4‐Oxazin‐3(4H)‐One Utilizing Umpolung Reaction to α‐Hydrazonoketone.

Published in:

Asian Journal of Organic Chemistry, 2025, v. 14, n. 3, p. 1, doi. 10.1002/ajoc.202400698

By:

Mizota, Isao;
Oshima, Keiji;
Hoshiai, Nozomi;
Yamamoto, Ayaki;
Mitani, Masaki;
Batool, Rabbia;
Liu, Bo‐Tau;
Shimizu, Makoto

Publication type:

Article

Ruthenium Catalysed Transfer Deuteration of Heteroaromatics in D2O.

Published in:

Asian Journal of Organic Chemistry, 2025, v. 14, n. 1, p. 1, doi. 10.1002/ajoc.202400462

By:

Gonzalo‐Navarro, Carlos;
Ruiz‐Castañeda, Margarita;
Fidalgo, Jairo;
Espino, Gustavo;
Jalón, Félix A.;
Manzano, Blanca R.

Publication type:

Article

Reactivity Umpolung of Amides in Organic Synthesis.

Published in:

Asian Journal of Organic Chemistry, 2023, v. 12, n. 12, p. 1, doi. 10.1002/ajoc.202300473

By:

Shi, Qiu;
Liu, Wenbo H.

Publication type:

Article

Highly Stereoselective Synthesis of γ,δ‐Unsaturated Quaternary α‐Amino Esters via the Tandem N‐Alkylation/Claisen Rearrangement of α‐Imino Allylesters.

Published in:

Asian Journal of Organic Chemistry, 2023, v. 12, n. 5, p. 1, doi. 10.1002/ajoc.202300063

By:

Mizota, Isao;
Fukaya, Toshikazu;
Miwa, Yumi;
Kobayashi, Yoshinari;
Ejima, Tomoki;
Yamaguchi, Mizuki;
Shimizu, Makoto

Publication type:

Article

Total Syntheses of h5‐HT2A Receptor Antagonist, FPTase Inhibitor, FGIN‐1‐27 and its Analog by Exploiting NHC‐Catalyzed Imine Umpolung as Key Step.

Published in:

Asian Journal of Organic Chemistry, 2023, v. 12, n. 2, p. 1, doi. 10.1002/ajoc.202200672

By:

Harish, Battu;
Reddy, Manyam Subbi;
Suresh, Surisetti

Publication type:

Article

Front Cover: Recent Advances in the Catalytic Umpolung Carboxylation of Allylic Alcohol Derivatives with Carbon Dioxide (Asian J. Org. Chem. 5/2022).

Published in:

Asian Journal of Organic Chemistry, 2022, v. 11, n. 5, p. 1, doi. 10.1002/ajoc.202200149

By:

You, Yong;
Mita, Tsuyoshi

Publication type:

Article

Recent Advances in the Catalytic Umpolung Carboxylation of Allylic Alcohol Derivatives with Carbon Dioxide.

Published in:

Asian Journal of Organic Chemistry, 2022, v. 11, n. 5, p. 1, doi. 10.1002/ajoc.202200082

By:

You, Yong;
Mita, Tsuyoshi

Publication type:

Article

Regiodivergent Functionalization of Isoquinoline‐1,3(2H,4H)‐dione Derivatives via Aerobic Umpolung.

Published in:

Asian Journal of Organic Chemistry, 2021, v. 10, n. 6, p. 1508, doi. 10.1002/ajoc.202100194

By:

Li, Ying‐Xian;
Feng, Xiao‐Bing;
Jia, Xue‐Min;
Jin, Huang;
Chen, Fei;
Zhao, Yong‐Long;
Zhang, Ji‐Quan;
Wang, Jian‐Ta;
Guo, Bing;
Tang, Lei;
Yang, Yuan‐Yong

Publication type:

Article

Umpolung Reactivity of Fluoroalkylselenotoluenesulfonates: Towards a Versatile Reagent.

Published in:

Asian Journal of Organic Chemistry, 2019, v. 8, n. 5, p. 675, doi. 10.1002/ajoc.201900027

By:

Ghiazza, Clément;
Kataria, Alex;
Tlili, Anis;
Toulgoat, Fabien;
Billard, Thierry

Publication type:

Article

Domino [3+1+1] heterocyclization providing an efficient umpolung strategy for synthesis of 2-(2′-azaaryl)imidazoles.

Published in:

Research on Chemical Intermediates, 2015, v. 41, n. 2, p. 773, doi. 10.1007/s11164-013-1227-8

By:

Zhang, Xiao-Jing;
Fan, Wei;
Fu, Li-Ping;
Jiang, Bo;
Tu, Shu-Jiang

Publication type:

Article

Umpolung reactivity of strained C–C σ-bonds without transition-metal catalysis.

Published in:

Nature Communications, 2024, v. 15, n. 1, p. 1, doi. 10.1038/s41467-024-47169-9

By:

Bai, Dachang;
Guo, Xiuli;
Wang, Xinghua;
Xu, Wenjie;
Cheng, Ruoshi;
Wei, Donghui;
Lan, Yu;
Chang, Junbiao

Publication type:

Article

Molecular basis and design principles of switchable front-rear polarity and directional migration in Myxococcus xanthus.

Published in:

Nature Communications, 2023, v. 14, n. 1, p. 1, doi. 10.1038/s41467-023-39773-y

By:

Carreira, Luís António Menezes;
Szadkowski, Dobromir;
Lometto, Stefano;
Hochberg, Georg. K. A.;
Søgaard-Andersen, Lotte

Publication type:

Article

Recent Progress in Enolonium Chemistry under Metal‐Free Conditions.

Published in:

Chemical Record, 2022, v. 22, n. 1, p. 1, doi. 10.1002/tcr.202100172

By:

Kumar, Ravi;
Nguyen, Quynh H.;
Um, Tae‐Woong;
Shin, Seunghoon

Publication type:

Article

Gold‐Catalyzed Transformation of Ynamides.

Published in:

Chemical Record, 2021, v. 21, n. 12, p. 4123, doi. 10.1002/tcr.202100159

By:

Shandilya, Shashank;
Protim Gogoi, Manash;
Dutta, Shubham;
Sahoo, Akhila K.

Publication type:

Article

Synthesis of Tetrasubstituted Phosphorus Analogs of Aspartic Acid as Antiproliferative Agents.

Published in:

Molecules, 2022, v. 27, n. 22, p. 8024, doi. 10.3390/molecules27228024

By:

del Corte, Xabier;
Maestro, Aitor;
López-Francés, Adrián;
Palacios, Francisco;
Vicario, Javier

Publication type:

Article

A Review on Generation and Reactivity of the N -Heterocyclic Carbene-Bound Alkynyl Acyl Azolium Intermediates.

Published in:

Molecules, 2022, v. 27, n. 22, p. 7990, doi. 10.3390/molecules27227990

By:

Dong, Ziyang;
Jiang, Chengming;
Zhao, Changgui

Publication type:

Article

Electrochemical Umpolung of Bromide: Transition-Metal-Free Bromination of Indole C–H Bond.

Published in:

Molecules, 2019, v. 24, n. 4, p. 696, doi. 10.3390/molecules24040696

By:

Zhang, Pan;
Chen, Jianbin;
Gao, Wei;
Xiao, Yiting;
Liu, Changwei;
Xu, Shanghui;
Yan, Xiaoli;
Qin, Dawei

Publication type:

Article

The Polar Field Reversal Process over Five Solar Cycles.

Published in:

Solar Physics, 2024, v. 299, n. 3, p. 1, doi. 10.1007/s11207-024-02273-3

By:

Webb, D. F.;
Emery, B. A.;
Gibson, S. E.;
Hewins, I. M.;
McFadden, R. H.;
Kuchar, T. A.

Publication type:

Article