Results 291 to 300 of about 3,273,294 (390)

Enantioselective Synthesis, Crystal Structures, and Stereoisomerism of Substituted o,m,o,p-Tetraphenylenes. [PDF]

Org Lett
Kawai Y, Oriki T, Sato Y, Nogami J, Kamiya Y, Suzuki S, Tanaka K.   +6 more
europepmc   +1 more source

Enantioselective synthesis of inherently chiral sulfur-containing calix[4]arenes via chiral sulfide catalyzed desymmetrizing aromatic sulfenylation. [PDF]

Nat Commun
Zhang XY, Zhu D, Cao RF, Huo YX, Ding TM, Chen ZM.   +5 more
europepmc   +1 more source

Insights into the Mechanism of a Vanadium Bromoperoxidase from the Marine Macro‐Algae Corallina pilulifera for Biocatalytic Halogenation

ChemCatChem, EarlyView.
A study of crystallographic complexes obtained from vanadium haloperoxidase enzymes can determine key amino acids, leucine, and phenylalanine, that change their structural orientation to allow either chloride or bromide to bind to the enzymes active site, thereby determining halide specificity.
Daniel E. Mitchell, Esther Garcia‐Rodriguez, Michail N. Isupov, Jennifer A. Littlechild   +3 more
wiley   +1 more source

Enantioselective synthesis of saddle-shaped eight-membered lactones with inherent chirality via organocatalytic high-order annulation. [PDF]

Nat Commun
Shi SQ, Cui CC, Xu LL, Zhang JP, Hao WJ, Wang J, Jiang B.   +6 more
europepmc   +1 more source

Solvent‐Driven Mechanistic Insights into Cu‐Catalyzed Asymmetric C─H Amidation via Nitrene Transfer

ChemCatChem, EarlyView.
The impact of solvent and ligand in asymmetric Cu‐catalyzed nitrene transfer into a benzylic C─H bond was investigated to provide insights to improve reaction design. Medium‐throughput experimentation, NMR, and CV studies suggest that the anti‐chelate effect on bis(oxazoline) ligands bound to Cu, as well as product inhibition, play key roles in ...
Jed H. Kim, Ethan M. Warrington, Ken S. Lee, Derek B. Hu, John F. Berry, Jennifer M. Schomaker   +5 more
wiley   +1 more source

Enantioselective Synthesis of Allylic Sulfones via Rhodium-Catalyzed Direct Hydrosulfonylation of Allenes and Alkynes. [PDF]

J Am Chem Soc
Chang CY, Aponick A.
europepmc   +1 more source

Development of Multipurpose Supported Asymmetric Salen Catalysts by Cu(0)‐Mediated Reversible Deactivation Radical Copolymerization

ChemCatChem, EarlyView.
The challenge of recycling heterogeneous catalysts and reusing them in different reactions was addressed. To this end, salen complexes were anchored on methacrylate insoluble polymers obtained using the Cu(0)‐mediated RDRP method. Their reactivity and recyclability were analyzed in asymmetric ring opening and dynamic kinetic resolution of epoxides ...
Rafaela Bechara, Mohamed Mellah, Nadine Barroca‐Aubry, François Ozanam, Anne‐Chantal Gouget‐Laemmel, Damien Aureau, Diana Dragoé, Philippe Roger, Emmanuelle Schulz   +8 more
wiley   +1 more source

Catalytic Enantioselective Synthesis of Axially Chiral Diaryl Ethers Via Asymmetric Povarov Reaction Enabled Desymmetrization. [PDF]

Adv Sci (Weinh)
Ye Z, Xie W, Liu W, Zhou C, Yang X.
europepmc   +1 more source

Enantioselective total synthesis and absolute stereostructure of hippospongic acid A

, 2001
Hideaki Hioki, Hidenori Ooi, Masayo Hamano, Yumi Mimura, Suzuyo Yoshio, Mitsuaki Kodama, Shinji Ohta, Mihoko Yanai, Susumu Ikegami   +8 more
openalex   +1 more source

A Comprehensive Review of Intramolecular Hydrosilylation of Alkynes and Alkenes

ChemCatChem, EarlyView.
Intramolecular hydrosilylation is a powerful method for alkenes or alkynes functionalization, and provides easy access to silylated heterocycles. The reaction involves the addition of an Si─H bond to a C─C double or triple bond, usually in the presence of a metal catalyst. This review explores the developments in this methodology, as well as the regio‐
Mathias Reboli, Muriel Durandetti
wiley   +1 more source