Results 211 to 220 of about 66,858 (295)

Water, Alcohols, Amines, and Amides as Formal Hydrogen‐Atom‐Transfer Reagents Through Activation With Redox‐Active Lewis Acids

Angewandte Chemie, EarlyView.
Protic molecules containing strong O─H or N─H bonds typically resist hydrogen‐atom abstraction because of the high reactivity of the resulting heteroatom‐centered radicals. However, association of the protic molecules with redox‐active Lewis acids can provide powerful hydrogen‐atom donors or proton‐coupled‐electron‐transfer reagents.
Petra Vojáčková, Armido Studer
wiley   +1 more source

Solvent-Free and Catalyst-Free Hydroamination of 2‑Ethynylpyridine. [PDF]

ACS Omega
Le M, Troester T, Cummings E, Matuszewski G, Fort EH.   +4 more
europepmc   +1 more source

Sulfur‐Boron Lewis Pair‐Catalyzed Hydrohalogenation of Alkynes via Formal Hydrogen Atom Transfer

Angewandte Chemie, EarlyView.
A sulfur‐boron Lewis pair enables the stereodivergent hydrohalogenation of alkynes with exclusive Markovnikov selectivity. Mechanistic studies support a proton transfer‐electron transfer (PT‐ET) sequence for vinyl radical formation rather than a concerted hydrogen atom transfer (HAT) pathway.
Yun Soo Shim, Jin Qian, Sourav Dey, Andrew F. Zahrt, Hyung Min Chi   +4 more
wiley   +1 more source

A Modular Synthesis of C5‐Sulfenyl Thiazoles via an Intermolecular Pummerer Rearrangement: An Underexplored Scaffold for Medicinal Chemistry

Angewandte Chemie, EarlyView.
Modular access to underexplored C5‐sulfenyl thiazoles via an intermolecular Pummerer rearrangement is reported. The methodology exhibits a broad functional group tolerance enabling the seamless design of trisubstituted thiazole cores bearing a sulfur handle for further elaboration.
Joe L. Smy, Theo C. Webb, Barnaby W. Greenland, S. Mark Roe, John Spencer, Storm Hassell‐Hart   +5 more
wiley   +1 more source

Regiodivergent Hydrogermylation of Alkynes Enabled by Dinuclear Cobalt Catalysts Bearing Different Ligands. [PDF]

Angew Chem Int Ed Engl
Zhao Z, Wang Q, Leng X, Wang D, Deng L.
europepmc   +1 more source

Supramolecular Polymer‐Surfactant Co‐Assemblies for Multivalent HSV‐1 Inhibition

Angewandte Chemie, EarlyView.
Non‐covalent co‐assembly of BTA with antiviral surfactants produces ratio‐dependent morphologies. Fibrous supramolecular polymers exhibit superior HSV‐1 inhibition, revealing multivalent fiber‐virus interactions and highlighting supramolecular co‐assemblies as a powerful strategy for functional biomedical nanomaterials with demonstrated tunable ...
Christian Zoister, Boris Schade, Paulina Sittinger, Xianwen Lou, Esmee de Korver, Freek V. de Graaf, Ranen Etouki, Chuanxiong Nie, Kai Licha, Kai Ludwig, Abhishek Kumar Singh, E. W. Meijer, Rainer Haag   +12 more
wiley   +1 more source

Alkyne Migratory Insertion Enabled Dynamic Kinetic Asymmetric Dearomatization of Unactivated Racemic Biaryls. [PDF]

Nat Commun
Yang Y, Li X, He Q, Tan Y, Hu M, Peng S, Yu Y, Wang ZX, Huang X.   +8 more
europepmc   +1 more source

Adaptive Hydrogenation of Alkynes Using CO as a Molecular Trigger to Selectively Produce Alkanes or Z‐Alkenes

Angewandte Chemie, EarlyView.
One catalyst for two products: CO acts as a molecular trigger for adaptive alkyne hydrogenation using supported Pd nanoparticles. The catalyst reversibly switches between the formation of alkanes under H2 and Z‐alkenes under H2/CO for 37 structurally diverse alkynes.
Manisha Durai, Lachlan Sharp‐Bucknall, Tim Alexander Schubert, Jacob Johny, John‐Tommes Krzeslack, Walid Hetaba, Walter Leitner, Alexis Bordet   +7 more
wiley   +1 more source

Nickel/Photoredox-catalyzed diastereoselective semihydrogenation of alkynes using a carboxylic acid as a cooperative ligand and hydrogen surrogate. [PDF]

Nat Commun
Zhang J, Zhang N, Sun W, Jie M, Pan Z, Xia C.   +5 more
europepmc   +1 more source

TADF‐Active Tetrazole Luminophores for Visible‐Light Functionalization of Nanoparticles and Surfaces

Angewandte Chemie, EarlyView.
A series of tetrazoles are reported that undergo 1,3‐dipolar cycloadditions with alkene and alkyne substrates, generating (dihydro)pyrazole products that exhibit thermally activated delayed fluorescence (TADF). The “photo‐click” reactivity of these tetrazoles is leveraged to functionalize nanoparticles and surfaces with TADF‐active chromophores ...
Ryoga Hojo, Katrina Bergmann, Siyuan L. Xie, Connor S. Durfy, William L. Primrose, Athan T. Gogoulis, Seja A. Elgadi, Mitchell J. Demchuk, Thomas Kalab, Peiqi Hu, Eva M. Nichols, Zachary M. Hudson   +11 more
wiley   +1 more source