Publications associées à Azide-alkyne Huisgen cycloaddition

Terminal Alkynes as One-Carbon Donors in [5+1] Heteroannulation: Synthesis of Pyridines via Ynimine Intermediates and Application in the Total Synthesis of Anibamine B

Qian Wang, Jieping Zhu, Rémi Hugo Lavernhe

Transition-metal-catalyzed [4+2] heteroannulation of alpha,beta-unsaturated oximes and their derivatives with alkynes has been developed into a powerful strategy for the synthesis of pyridines. It nevertheless lacks regioselectivity when unsymmetrically su ...

WILEY-V C H VERLAG GMBH2023

Synthesis of propargyl silanes from terminal alkynes via a migratory Sonogashira reaction

Jérôme Waser, Mikus Purins, Lucas Antoine Théo Eichenberger

Herein we report a mild synthesis of propargyl silanes from terminal alkynes. We exploit a bromonaphthyl-substituted silane as a silylmethyl electrophile surrogate, which participates in a Sonogashira reaction after an aryl-to-alkyl Pd-migration. Twenty-se ...

2023

Palladium-Catalyzed trans-Hydroalkoxylation: Counterintuitive Use of an Aryl Iodide Additive to Promote C-H Bond Formation

Jérôme Waser, Mikus Purins, Ashis Kumar Das, Luca Buzzetti

We report an enantioselective palladium-catalyzed trans-hydroalkoxylation of propargylic amines with a trifluoroacetaldehydederived tether to build chiral oxazolidines. Diastereoselective hydrogenation using a heterogeneous palladium catalyst then gave acc ...

AMER CHEMICAL SOC2022

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

Copper‐Catalyzed Aza‐Sonogashira Cross‐Coupling to Ynimines: Development and Application to the Synthesis of Heterocycles

Jieping Zhu, Rémi Hugo Lavernhe, Qiang Wang

Nitrogen substituted alkynes such as ynamines and ynamides are versatile synthetic building blocks in organic chemistry. Ynimines bearing additional nucleophilic and electrophilic centers relative to ynamines and ynamides are expected to have high syntheti ...

2021

Asymmetric azide-alkyne Huisgen cycloaddition on chiral metal surfaces

Harald Brune, Roland Hany, Roland Widmer, Michael Bauer, Samuel Thomas Stolz

Achieving fundamental understanding of enantioselective heterogeneous synthesis is marred by the permanent presence of multitudinous arrangements of catalytically active sites in real catalysts. In this study, we address this issue by using structurally co ...

NATURE RESEARCH2021

Covalent and Noncovalent Conjugation of Degradable Polymer Nanoparticles to T Lymphocytes

Harm-Anton Klok, Tanja Thomsen

Cells are attractive as carriers that can help to enhance control over the biodistribution of polymer nanomedicines. One strategy to use cells as carriers is based on the cell surface immobilization of the nanoparticle cargo. While a range of strategies ca ...

AMER CHEMICAL SOC2021

A Strategy to Conjugate Bioactive Fragments to Cytotoxic Diiron Bis(cyclopentadienyl) Complexes

Paul Joseph Dyson, Mouna Hadiji, Silvia Schoch, Sarah Alexandra Pais Pereira

A series of bioactive molecules were synthesized from the condensation of aspirin or chlorambucil with terminal alkynes bearing alcohol or amine substituents. Insertion of the resulting alkynes into the iron-carbyne bond of readily accessible diiron bis(cy ...

AMER CHEMICAL SOC2021

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Azide-alkyne Huisgen cycloaddition

Novel Alkynylation Methods through the Combination of Hypervalent Iodine Reagents and Alkynyl-trifluoroborate Salts

Terminal Alkynes as One-Carbon Donors in [5+1] Heteroannulation: Synthesis of Pyridines via Ynimine Intermediates and Application in the Total Synthesis of Anibamine B

Synthesis and application of bifunctional hypervalent iodine reagents for peptide modification.

Synthesis of propargyl silanes from terminal alkynes via a migratory Sonogashira reaction

Palladium-Catalyzed trans-Hydroalkoxylation: Counterintuitive Use of an Aryl Iodide Additive to Promote C-H Bond Formation

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

Copper‐Catalyzed Aza‐Sonogashira Cross‐Coupling to Ynimines: Development and Application to the Synthesis of Heterocycles

Asymmetric azide-alkyne Huisgen cycloaddition on chiral metal surfaces

Covalent and Noncovalent Conjugation of Degradable Polymer Nanoparticles to T Lymphocytes

A Strategy to Conjugate Bioactive Fragments to Cytotoxic Diiron Bis(cyclopentadienyl) Complexes

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Chattez avec Graph Search

Asymmetric azide-alkyne Huisgen cycloaddition on chiral metal surfaces

Terminal Alkynes as One-Carbon Donors in [5+1] Heteroannulation: Synthesis of Pyridines via Ynimine Intermediates and Application in the Total Synthesis of Anibamine B

Synthesis and application of bifunctional hypervalent iodine reagents for peptide modification.

Synthesis of propargyl silanes from terminal alkynes via a migratory Sonogashira reaction

Copper‐Catalyzed Aza‐Sonogashira Cross‐Coupling to Ynimines: Development and Application to the Synthesis of Heterocycles

A Strategy to Conjugate Bioactive Fragments to Cytotoxic Diiron Bis(cyclopentadienyl) Complexes

Palladium-Catalyzed trans-Hydroalkoxylation: Counterintuitive Use of an Aryl Iodide Additive to Promote C-H Bond Formation

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

Covalent and Noncovalent Conjugation of Degradable Polymer Nanoparticles to T Lymphocytes