Výsledky vyhledávání - "Ivana Fleischer"

Recent Metal-Catalyzed Methods for Thioether Synthesis

Autor: Ivana Fleischer, Valentin J. Geiger, Regina M. Oechsner, Paul H. Gehrtz

Publikováno v: Synthesis. 54:5139-5167

This review summarizes the more recent methods (since 2015) for the synthesis of thioethers using homogeneous metals as catalysts. The thioether moiety can be found in numerous compounds for pharmaceutical, agricultural, or material applications and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::44acf631d5dcd42cb4a99bda7dae736c
https://doi.org/10.1055/a-1914-1231

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Titanium-catalysed deoxygenation of benzylic alcohols and lignin model compounds

Autor: Alexandru Căciuleanu, Felix Vöhringer, Ivana Fleischer

We report a catalytic system for direct deoxygenation of benzylic alcohols by using non-precious precatalyst Cp2TiCl2 and 2 MeTHF as solvent. Mechanistic studies showed that the used silane Me(EtO)2SiH acts both as H-donor and regenerating agent of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af87a8e83d59b584bdbfcdd041007c11
https://doi.org/10.26434/chemrxiv-2023-47qf9

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Nickel Catalyzed Cross Coupling of Aryl and Alkenyl Triflates with Alkyl Thiols

Autor: Regina Oechsner, Ivo Lindenmaier, Ivana Fleischer

We report a nickel catalyzed C-S cross-coupling of aryl and alkenyl triflates with alkyl thiols. A variety of the corresponding thioethers were synthesized using an air-stable nickel precatalyst under mild reaction conditions with short reaction time

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d053277a352a8468175ae74bd5ee744d
https://doi.org/10.26434/chemrxiv-2023-7632g

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Iron-Catalyzed Cross-Coupling of Thioesters and Organomanganese Reagents

Autor: Valentin Jacob Geiger, Guillaume Lefèvre, Ivana Fleischer

Publikováno v: Chemistry (Weinheim an der Bergstrasse, Germany). 28(62)

We report a Fukuyama-type coupling of thioesters with aliphatic organomanganese reagents utilizing a cheap and easily available iron(III) precatalyst. The reactions exhibit a wide tolerance of solvents and functional groups, allowing for the conversi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e4944c3770648e23cb81b4672dacc12
https://pubmed.ncbi.nlm.nih.gov/35869871

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Tandem Olefin Isomerization/Cyclization Catalyzed by Complex Nickel Hydride and Brønsted Acid

Autor: Ivana Fleischer, Prasad Kathe, Alexandru Caciuleanu, Andreas Berkefeld

Publikováno v: The Journal of Organic Chemistry. 85:15183-15196

We disclose a nickel/Bronsted acid-catalyzed tandem process consisting of double bond isomerization of allyl ethers and amines and subsequent intramolecular reaction with nucleophiles. The process is accomplished by [(Me3P)4NiH]N(SO2CF3)2 in the pres

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b64d1bd7be48765dd931b00dacd8cff0
https://doi.org/10.1021/acs.joc.0c02033

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Tandem Acid/Pd‐Catalyzed Reductive Rearrangement of Glycol Derivatives

Autor: Tanno Schmidt, Ivana Fleischer, Prasad Kathe, Benjamin Ciszek

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

Herein, we describe the acid/Pd‐tandem‐catalyzed transformation of glycol derivatives into terminal formic esters. Mechanistic investigations show that the substrate undergoes rearrangement to an aldehyde under [1,2] hydrogen migration and cleava

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::025092fa9a0df3c4fe65fde5db43043a
http://europepmc.org/articles/PMC7154628

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Acetate Facilitated Nickel Catalyzed Coupling of Aryl Chlorides and Alkyl Thiols

Autor: Ivana Fleischer, Regina M. Oechsner, J. Philipp Wagner

We report a mild, fast and convenient catalytic system for the coupling of aryl chlorides with primary, secondary, as well as previously challenging tertiary alkyl thiols using an air-stable nickel(II) precatayst in combination with the low-cost base

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6af9e7122bf447066b13d5502dce727b
https://doi.org/10.33774/chemrxiv-2021-tgvjk

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