Results 131 to 140 of about 36,889 (205)

Enantioselective Rh/Cu-Catalyzed Addition of Terminal Alkynes to Allenes for the Synthesis of Chiral 1,4-Enynes. [PDF]

Org Lett
Daiger M, Kromer J, Kaplan S, Breit B.
europepmc   +1 more source

Positive Electrochemical Potentials Induce Enhanced Chemoselectivity and Activity in the Thermocatalytic Hydrogenation of 3‐Nitrostyrene

Angewandte Chemie, EarlyView.
Induced by positive electrochemical potentials, thermocatalytic hydrogenation (TCH) of 3‐nitrostyrene with H2 delivers one single product with six‐fold enhanced yield. The enhanced selectivity and activity originate from changes in the adsorption geometry of 3‐nitrostyrene and in the surface concentration of 3‐nitrostyrene and hydrogen via a concurrent
Yunfei Jiao, Martina A. Pogany, Murielle F. Delley   +2 more
wiley   +1 more source

Regiodivergent Cyclotrimerization of Alkynes: Switchable Selectivities by Iron and Nickel Catalysts. [PDF]

Precis Chem
Pan QX, Wu D, Chen F, Du ZH, Bo CB, Li M, Liu N.   +6 more
europepmc   +1 more source

Direct δ‐Lactone Synthesis From Free Alcohols via Photoinduced δ‐C(sp3)–H Carbonylation in Flow

Angewandte Chemie, EarlyView.
Herein, we have developed a photo‐flow platform for the δ‐C(sp3)─H carbonylative lactonization of free alcohols with carbon monoxide. The transformation integrates alkoxyl radical generation, selective 1,5‐HAT, CO incorporation, and radical–polar crossover to enable direct access to δ‐lactones from simple alcohol precursors.
Prakash Chandra Tiwari, Runkang Liu, Timothy Noël   +2 more
wiley   +1 more source

AgBF₄-catalyzed insertion of unactivated alkynes into C-F bonds of acyl fluorides. [PDF]

Chem Sci
Emmei T, Tobisu M.
europepmc   +1 more source

A Lipid‐Conjugation Strategy for Intracellular Reactive Oxygen Species Control in Hepatic Cells

Angewandte Chemie, EarlyView.
A lipid conjugation strategy anchors a manganese Salen complex within phospholipid membranes, yielding stable, catalytically active liposomes. These lipid–metal assemblies efficiently degrade reactive oxygen species (ROS) and enable intracellular redox control in steatotic HepaRG cells, offering a precise route to biomimetic antioxidant design ...
Olav Vestrheim, Huichao Zhao, Anders Bodholt Nielsen, Nino Wili, Niels Chr. Nielsen, Joseph A. Lyons, Rajeshwar Prosad Mookerjee, Brigitte Städler   +7 more
wiley   +1 more source

Catalytic Enantioselective Intramolecular Aza‐Michael Addition to α,β‐Unsaturated Esters

Angewandte Chemie, EarlyView.
A general method for accessing enantioenriched saturated N‐heterocycles via a catalytic enantioselective intramolecular aza‐Michael reaction to α,β‐unsaturated esters is described. A superbasic bifunctional iminophosphorane (BIMP) catalyst was key to enabling reactivity of the high pKa sulfonamide pronucleophile, whilst delivering good to excellent ...
Evan G. W. Rutter, Cameron J. MacRae, Haoran Xiong, Daniel Rozsar, Katherine F. P. Clarke, Darren J. Dixon   +5 more
wiley   +1 more source

A General Sonogashira-Type Strategy for Exopolyhedral B-C(sp) Bond Formation on <i>o</i>- and <i>m</i>-Carboranes. [PDF]

Org Lett
Hinkle CA, Tiffany AT, Luancing AP, Lefkowitz L, Sampson J, Yap GPA, Messina MS.   +6 more
europepmc   +1 more source

Transition Metal‐Free Heteroarene Insertion Into C─C Bonds of Benzocyclobutenones

Angewandte Chemie, EarlyView.
A transition metal‐free insertion of five‐membered heteroarenes into the C─C bonds of benzocyclobutenones has been achieved under mild and operationally simple conditions. This method provides an efficient and modular approach to access fused partially saturated hetero‐polycyclic scaffolds that exist in many bioactive molecules.
Cole J. Wagner, Guangbin Dong
wiley   +1 more source

Comparative analysis of alkyne- and desthiobiotinylated photoaffinity probes for chemotranscriptomic profiling. [PDF]

RSC Chem Biol
van den Homberg DAL, Poulladofonou G, Dekens A, Velema WA.   +3 more
europepmc   +1 more source