Výsledky vyhledávání - "Märt Lõkov"

Acid‐Base and Anion Binding Properties of Tetrafluorinated 1,3‐Benzodiazole, 1,2,3‐Benzotriazole and 2,1,3‐Benzoselenadiazole

Autor: Elisabeth Parman, Yuri G. Slizhov, Elena A. Chulanova, Nikolay A. Semenov, Sofja Tshepelevitsh, Ivo Leito, Andrey V. Zibarev, G. E. Sal’nikov, Darya O. Prima, Märt Lõkov, Robert Järviste

Publikováno v: ChemPhysChem. 2021. Vol. 22, № 22. P. 2329-2335

The influence of fluorination on the acid-base properties and the capacity of structurally related 6-5 bicyclic compounds – 1,3-benzodiazole 1, 1,2,3-benzotriazole 2 and 2,1,3-benzoselenadiazole 3 to σ-hole interactions, i.e. hydrogen (1 and 2) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a4d12dc2e8879c457321feb5228aa1b
https://doi.org/10.1002/cphc.202100475

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Multifunctional Organocatalysts - Singly-Linked and Macrocyclic Bisphosphoric Acids for Asymmetric Phase-Transfer and Brønsted-Acid Catalysis

Autor: Maike Thiele, Thomas Rose, Märt Lõkov, Sophia Stadtfeld, Sofja Tshepelevitsh, Elisabeth Parman, Karina Opara, Christoph Wölper, Ivo Leito, Stefan Grimme, Jochen Niemeyer

Publikováno v: Chemistry (Weinheim an der Bergstrasse, Germany).

The linking of phosphoric acids via covalent or mechanical bonds has proven to be a successful strategy for the design of novel organocatalysts. Here, we present the first systematic investigation of singly-linked and macrocyclic bisphosphoric acids,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76118ec7893ef752f0bebb28bb6c07d2
https://pubmed.ncbi.nlm.nih.gov/36161384

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Bis(4‐benzhydryl‐benzoxazol‐2‐yl)methane – from a Bulky NacNac Alternative to a Trianion in Alkali Metal Complexes

Autor: Johannes Kretsch, Dietmar Stalke, Regine Herbst-Irmer, Anne-Kathrin Kreyenschmidt, Timo Schillmöller, Ivo Leito, Märt Lõkov

Publikováno v: Chemistry (Weinheim an Der Bergstrasse, Germany)

A novel sterically demanding bis(4‐benzhydryl‐benzoxazol‐2‐yl)methane ligand 6 (4−BzhH2BoxCH2) was gained in a straightforward six‐step synthesis. Starting from this ligand monomeric [M(4‐BzhH2BoxCH)] (M=Na (7), K (81 )) and dimeric [{M

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afa6b3732f7524d05ae2bed383d4756a
http://europepmc.org/articles/PMC8361911

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Electrochemistry and Reactivity of Chelation‐stabilized Hypervalent Bromine(III) Compounds

Autor: Nayereh Mohebbati, Igors Sokolovs, Philipp Woite, Märt Lõkov, Elisabeth Parman, Mihkel Ugandi, Ivo Leito, Michael Roemelt, Edgars Suna, Robert Francke

Publikováno v: Chemistry – A European Journal. 28

Hypervalent bromine(III) reagents possess a higher electrophilicity and a stronger oxidizing power compared to their iodine(III) counterparts. Despite the superior reactivity, bromine(III) reagents have a reputation of hard‐to‐control and difficu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fc9df6e6cc0ce0bc64745bf611ee35e
https://doi.org/10.1002/chem.202200974

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Highly Acidic Conjugate‐Base‐Stabilized Carboxylic Acids Catalyze Enantioselective oxa‐Pictet–Spengler Reactions with Ketals

Autor: Helmi Ulrika Kirm, Chenfei Zhao, Märt Lõkov, Jaan Saame, Daniel Seidel, Minami Odagi, Khalil A. Abboud, Ivo Leito, Zhengbo Zhu

Publikováno v: Angewandte Chemie. 132:2044-2048

Acyclic ketone-derived oxocarbenium ions are involved as intermediates in numerous reactions that provide valuable products, however, they have thus far eluded efforts aimed at asymmetric catalysis. We report that a readily accessible chiral carboxyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0c23186b491e31499570c9a209ff43e
https://doi.org/10.1002/ange.201912677

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