Nicolai Cramer

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Publications associées (117)

Swiss CAT plus , a Data-driven Infrastructure for Accelerated Catalysts Discovery and Optimization

Nicolai Cramer, Pascal Miéville, Florian Patrick Marie Daniel De la Barre De Nanteuil

The Catalysis Hub - Swiss CAT+, is a new infrastructure project funded by the ETH Domain, co -head-ed by EPFL and ETHZ. It offers the scientific community a unique integrated technology platform combining automated and high-throughput experimentation with ...

SWISS CHEMICAL SOC2023

Toward in silico Catalyst Optimization

Nicolai Cramer, Matthew Wodrich, Rubén Laplaza Solanas, Anne-Clémence Corminboeuf

In this minireview, we overview a computational pipeline developed within the framework of NCCR Catalysis that can be used to successfully reproduce the enantiomeric ratios of homogeneous catalytic reactions. At the core of this pipeline is the SCINE Molas ...

SWISS CHEMICAL SOC2023

Reductive Asymmetric Aza-Mislow-Evans Rearrangement by 1,3,2-Diazaphospholene Catalysis

Nicolai Cramer

1,3,2-diazaphospholene hydrides (DAP-H) enable smooth conjugate reduction of polarized double bonds. The transiently formed phosphorus-enolate provides a potential platform for reductive alpha-functionalizations. In this respect, asymmetric C-heteroatom bo ...

Wiley-VCH Verlag GmbH2023

Mapping Catalyst‐Solvent Interplay in Competing Carboamination/Cyclopropanation Reactions

Nicolai Cramer, Matthew Wodrich, Anne-Clémence Corminboeuf, Miyeon Chang, Simone Gallarati

Group 9 metals, in particular Rh III complexes with cyclopentadienyl ligands, are competent C–H activation catalysts. Recently, a Cp*Rh III catalyzed reaction of alkenes with N -enoxyphthalimides showed divergent outcome based on the solvent, with carboami ...

2022

Chemo- and regio-divergent access to fluorinated 1-alkyl and 1-acyl triazenes from alkynyl triazenes

Kay Severin, Nicolai Cramer, Carl Thomas Bormann, Jin Fay Tan

The 1,1,2,2-tetrafluoroethylene unit is prevalent in bioactive molecules and functional materials. Despite being in principle a straightforward strategy to access this motif, the direct tetrafluorination of alkynes involves very hazardous or inconvenient r ...

2022

Enantioselective Access to 3-Azabicyclo[3.1.0]hexanes by (CpRhIII)-Rh-x Catalyzed C-H Activation and Cp*Ir-III Transfer Hydrogenation

Nicolai Cramer, Dan Forster, Coralie Danielle Annick Duchemin

Rigid saturated nitrogen-containing scaffolds such as 3-azabicyclo[3.1.0]hexanes are very important and frequently occurring motifs in biologically active compounds. We disclose a flexible two-step protocol for their efficient and selective access. A tailo ...

AMER CHEMICAL SOC2022

Chiral Cyclopentadienyl Ligands: Design, Syntheses, and Applications in Asymmetric Catalysis

Nicolai Cramer, Benoît Daniel Bertrand Audic, Aragorn Nathan Laverny

The creation of new chiral ligands capable of providing high stereocontrol in metal-catalyzed reactions is crucial in modern organic synthesis. The production of bioactive molecules as single enantiomers is increasingly required, and asymmetric catalysis w ...

Wiley-VCH Verlag GmbH2021

Atropo‐Enantioselective Oxidation‐Enabled Iridium(III)‐Catalyzed C−H Arylations with Aryl Boronic Esters

Nicolai Cramer

Atropo-enantioselective biaryl coupling through C−H bond functionalization is an emerging technology allowing direct construction of axially chiral molecules. This approach is largely limited to electrophilic coupling partners. We report a highly atropo-en ...

Wiley-VCH Verlag GmbH2021

Cobalt(III)-Catalyzed Diastereo- and Enantioselective Three-Component C-H Functionalization

Nicolai Cramer

Catalytic enantioselective C-H functionalization has recently become a tool for the creation of stereogenic centers. The steep increase in molecular complexity of multicomponent reactions matches very well with asymmetric C-H functionalizations, but the re ...

2021

Iridium-Catalyzed Acid-Assisted Hydrogenation of Oximes to Hydroxylamines

Nicolai Cramer

We found that cyclometalated cyclopentadienyl iridium(III) complexes are uniquely efficient catalysts in homogeneous hydrogenation of oximes to hydroxylamine products. A stable iridium C,N-chelation is crucial, with alkoxy-substituted aryl ketimine ligands ...

Wiley-VCH Verlag GmbH2021

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Enantioselective Access to 3-Azabicyclo[3.1.0]hexanes by (CpRhIII)-Rh-x Catalyzed C-H Activation and Cp*Ir-III Transfer Hydrogenation

Nicolai Cramer, Dan Forster, Coralie Danielle Annick Duchemin

AMER CHEMICAL SOC2022