Search Results - "BICA, Katharina"
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Synthesis of Chiral Diazabicycloalkanes via Organocatalytic aza‐Michael/Aldol Reaction
Published in Advanced synthesis & catalysis (09-01-2024)“…We introduce a strategy for the one‐step synthesis of chiral diazabicycloalkanes that delivers the annulated ring system in a single reaction step. The method…”
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Chiral Phosphoric Acids as Versatile Tools for Organocatalytic Asymmetric Transfer Hydrogenations
Published in European journal of organic chemistry (14-10-2021)“…Herein, recent developments in the field of organocatalytic asymmetric transfer hydrogenation (ATH) of C=N, C=O and C=C double bonds using chiral phosphoric…”
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3
Enzyme‐Assisted Supercritical Fluid Extraction of Flavonoids from Apple Pomace (Malus×domestica)
Published in ChemSusChem (08-04-2024)“…Herein an enzyme‐assisted supercritical fluid extraction (EA‐SFE) was developed using the enzyme mix snailase to obtain flavonols and dihydrochalcones,…”
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4
Visible Light‐Driven, Persulfate‐Mediated Hydrocarboxylation of Vinylsulfones
Published in Advanced synthesis & catalysis (19-09-2023)“…We report a visible light‐mediated approach for the radical hydrocarboxylation of vinylsulfone derivatives. Using cheap and easily accessible sodium formate as…”
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5
Applications of Chiral Ionic Liquids
Published in European Journal of Organic Chemistry (01-07-2008)“…Despite the rapid growth in chiral ionic liquid (CIL) research, successful applications remained hidden for some time, but are increasing fast nowadays. The…”
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Boosting Visible‐Light Carbon Dioxide Reduction with Imidazolium‐Based Ionic Liquids
Published in ChemCatChem (22-03-2024)“…Efficiently generating C1 building blocks from environmentally friendly carbon sources, such as through photocatalytic CO2 reduction, is essential for…”
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Sterically Demanding Flexible Phosphoric Acids for Constructing Efficient and Multi‐Purpose Asymmetric Organocatalysts
Published in Angewandte Chemie International Edition (27-06-2022)“…Herein, we present a novel approach for various asymmetric transformations of cyclic enones. The combination of readily accessible chiral diamines and…”
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Supported Ionic Liquid Phase (SILP) Allylic Alkylation of Amines in Continuous Flow
Published in ChemCatChem (22-06-2023)“…We present the use of Pd‐complex‐containing supported ionic liquid phases (SILPs) as a novel approach for continuous‐flow allylic alkylation of N‐nucleophiles…”
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9
Continuous Enantioselective α‑Alkylation of Ketones via Direct Photoexcitation
Published in Journal of organic chemistry (21-06-2024)“…Motivated by the scarcity of enantioselective direct intermolecular α-alkylation reactions of ketones with simple alkyl halides, we report a…”
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10
Photocatalytic Hydroalkylation of Aryl-Alkenes
Published in Journal of organic chemistry (19-08-2022)“…Here, we present a visible light-catalyzed hydroalkylation of aryl-alkenes affording C–C bonds using aryl-alkenes and alkyl iodides. We demonstrate the…”
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11
Counterion-Enhanced Pd/Enamine Catalysis: Direct Asymmetric α‑Allylation of Aldehydes with Allylic Alcohols by Chiral Amines and Achiral or Racemic Phosphoric Acids
Published in Journal of organic chemistry (01-01-2021)“…We report a straightforward and efficient Pd/enamine catalytic procedure for the direct asymmetric α-allylation of branched aldehydes. The use of simple chiral…”
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12
Crystalline vs. Ionic Liquid Salt Forms of Active Pharmaceutical Ingredients: A Position Paper
Published in Pharmaceutical research (01-04-2010)“…Why not consider liquid salt forms of active pharmaceutical ingredients (APIs) as an alternative versatile tool in the pharmaceutical industry? Recent…”
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13
Development of Hollow Fiber Membranes Functionalized with Ionic Liquids for Enhanced CO2 Separation
Published in ACS sustainable chemistry & engineering (12-08-2024)“…The combination of CO2-selective ionic liquids (ILs) with block copolymers, such as Pebax 1657, has demonstrated an enhancement of the gas separation…”
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14
Continuous Synthesis of Carbamates from CO2 and Amines
Published in ACS omega (19-12-2023)“…We present a novel approach for the continuous preparation of carbamates. The simple yet fast synthetic route relies on directly utilizing carbon dioxide and,…”
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15
A Combined Deep Eutectic Solvent-Ionic Liquid Process for the Extraction and Separation of Platinum Group Metals (Pt, Pd, Rh)
Published in Molecules (Basel, Switzerland) (27-11-2021)“…Recovery of platinum group metals from spent materials is becoming increasingly relevant due to the high value of these metals and their progressive depletion…”
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Counterion Enhanced Organocatalysis: A Novel Approach for the Asymmetric Transfer Hydrogenation of Enones
Published in ChemCatChem (21-07-2020)“…We present a novel strategy for organocatalytic transfer hydrogenations relying on an ion‐paired catalyst of natural l‐amino acids as main source of chirality…”
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17
An Iron-Containing Ionic Liquid as Recyclable Catalyst for Aryl Grignard Cross-Coupling of Alkyl Halides
Published in Organic letters (16-02-2006)“…The ionic liquid butylmethylimidazolium tetrachloroferrate (bmim-FeCl4) was found to be a very effective and completely air stable catalyst for the biphasic…”
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Silicon Oxycarbide (SiOC)-Supported Ionic Liquids: Heterogeneous Catalysts for Cyclic Carbonate Formation
Published in ACS sustainable chemistry & engineering (29-01-2024)“…Silicon oxycarbides (SiOCs) impregnated with tetrabutylammonium halides (TBAX) were investigated as an alternative to silica-based supported ionic liquid…”
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Continuous Formation of Limonene Carbonates in Supercritical Carbon Dioxide
Published in Organic process research & development (21-10-2022)“…We present a continuous flow method for the conversion of bioderived limonene oxide and limonene dioxide to limonene carbonates using carbon dioxide in its…”
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20
Polarisabilities of alkylimidazolium ionic liquids
Published in Physical chemistry chemical physics : PCCP (01-01-2013)“…The molar polarisability and molar volume for 71 ionic liquids were extracted from 157 measurements of their refractive index and density, which were then…”
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