Results 211 to 220 of about 39,817 (294)

Development and mechanistic studies of calcium-BINOL phosphate-catalyzed hydrocyanation of hydrazones. [PDF]

Beilstein J Org Chem
Tortora C, Fischer CA, Kohlbauer S, Zamfir A, Ballmann GM, Pahl J, Harder S, Tsogoeva SB.   +7 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

Recent Advances in the Enantioselective Organocatalytic [4+2] Cycloadditions. [PDF]

Molecules
Bauer T.
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

Asymmetric Counteranion-Directed Halogen Bonding Catalysis. [PDF]

J Am Chem Soc
Reinhard DL, Iniutina A, Reese S, Shaw T, Merten C, List B, Huber SM.   +6 more
europepmc   +1 more source

Organocatalytic Enantioselective Conjugate Addition of Isoxazol‐5(4H)‐Ones to Aurone‐Derived Azadienes

ChemCatChem, EarlyView.
The efficient and robust enantioselective organocatalytic methodology was developed for the conjugate addition of isoxazol‐5(4H)‐ones to aurone‐derived azadienes. This approach provided products featuring benzofuran and isoxazole rings with high yields and enantioselectivities.
Ricardo Torán, Jordi Torró, Amparo Sanz‐Marco, Carlos Vila, Gonzalo Blay   +4 more
wiley   +1 more source

Enantioselective acyl-trifluoromethylation of olefins by bulky thiazolium carbene catalysis. [PDF]

Nat Commun
Jana S, Wodrich MD, Cramer N.
europepmc   +1 more source

Mapping Selective Oxidations of Unspecific Peroxygenases

ChemCatChem, EarlyView.
A comprehensive fingerprinting of 15 diverse unspecific peroxygenases (UPOs) with alkanes, aromatics, and alkenes reveals distinct chemo‐, regio‐, and stereoselectivity profiles. GC‐MS‐based mapping identifies highly selective natural and engineered UPOs, guiding their use in biocatalysis and providing a valuable basis for targeted protein engineering ...
Dominik Homann, Pascal Püllmann, Martin J. Weissenborn   +2 more
wiley   +1 more source

Switchable organocatalytic enantioselective sulfenocyclization of cyclohexadienes enabling chemodivergent access to chiral bicyclo[m.n.1] ring systems. [PDF]

Nat Commun
Zhang BQ, Chen L, Xiao WY, Liu Y, Li YL, Deng J.   +5 more
europepmc   +1 more source

Phosphino(silyl) Nickel Complexes for Alkene Hydroboration Catalysis: Steric Tuning of Pre‐Catalyst Provides High Regioselectivity

ChemCatChem, EarlyView.
Bis(phosphino)silyl (PSiP) nickel complexes are effective pre‐catalysts for room temperature alkene hydroboration. Terminal and geminal alkenes, including a wide scope of vinyl arenes, reacted to afford exclusively the linear, anti‐Markovnikov product in all cases. Internal alkenes undergo Ni‐mediated tandem alkene isomerization‐hydroboration to afford
Xue Tang, Yiwen Feng, Deidre Tremblay, Katherine N. Robertson, Laura Turculet   +4 more
wiley   +1 more source