Results 131 to 140 of about 15,429 (247)

Unraveling the regioselectivity of Ophiostoma piceae sterol esterase as a case study for lipases with wide acyl-binding tunnel entrances. [PDF]

J Biol Chem
Lee J, Choi Y, Kim T, Kim J, Chang PS.
europepmc   +1 more source

Cyclopropylamine‐Derived Distonic Iminium Radicals: Photoinduced Strategies in Chemo‐ and Stereo‐Selective Synthesis

Chemistry – A European Journal, EarlyView.
Cyclopropylamines have emerged as powerful photocatalytic building blocks. Upon light‐induced single‐electron oxidation, they undergo strain‐release ring opening to generate distonic iminium radicals that enable diverse transformations, including ring‐opening functionalization, formal [3 + 2] cycloadditions, radical cascades, and asymmetric bond ...
Maria Chiara Cabua, Alberto Luridiana, Francesco Secci, Emanuele Cocco   +3 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

Regioselective Aldol Reactions Directed by Charge and Orbital Effects in Cyclic Germyl Dienolates: Synthesis of Three Distinct Regio‐ and Stereoisomers

Chemistry – A European Journal, EarlyView.
Charge and orbital control represent fundamental principles in organic chemistry. In this study, these principles are applied to the aldol reactions of a cyclic Ge‐dienolate. By systematically tuning the charge and orbital distributions of the Ge‐dienolates and their aldehyde reaction partners, regio‐ and stereoselective access to three distinct aldol ...
Taishi Nojima, Akihito Konishi, Makoto Yasuda   +2 more
wiley   +1 more source

Catalyst-Controlled Regiodivergent C-H Olefination of Furanyl Carbamates through a Rational Approach. [PDF]

JACS Au
Richard F, Languet M, Escande de Messières C, Zaitoun AM, Dupas A, Cambeiro XC, Cossy J, Arseniyadis S.   +7 more
europepmc   +1 more source

The Mechanism of Visible‐Light Photochemical Rearrangements of Conjugated Amide Enolates

Chemistry – A European Journal, EarlyView.
Visible light irradiation of extended enolates of N‐benzylamides leads to homolytic C─N Bond cleavage, generating a biradical. Computational and mechanistic studies suggest rapid radical recombination within a solvent cage to give either ring‐expanded or rearranged products. ABSTRACT Deprotonation of conjugated amides forms colored solutions of lithium
James Mortimer, William Terry‐Wright, Basile F. E. Curchod, Jonathan Clayden   +3 more
wiley   +1 more source

Degradable polymers via controlled alternating ring-opening metathesis copolymerization of bio-sourced oxa-norbornenes and 2,3-dihydrofuran. [PDF]

Commun Chem
Chen Y, Chen JF, Tang Z, Zhang X, Lai H.
europepmc   +1 more source

N‐Sulfonyl Azalevoglucosan: A Versatile Platform for the Synthesis of Polysubstituted Piperidines

Chemistry – A European Journal, EarlyView.
Gain by strain: The synthesis of a levoglucosan analog, in which the pyranose oxygen has been replaced by a nitrogen, allows navigation on the piperidine ring to iteratively install functional groups at C1, C2, C3, C4, and C6 positions using simple experimental protocols with minimal protecting group manipulation.
Dylan Yorga, Jérôme Marrot, Ana Poveda, Nicolas Auberger, Jesús Jiménez‐Barbero, Jérôme Désiré, Yves Blériot   +6 more
wiley   +1 more source

Clock-Turning Control of P450 TxtE Regioselectivity Enables Precise Site Functionalization of Aromatic Compounds. [PDF]

JACS Au
Yang X, Pan Y, Miao T, Yuan Z, Cong Y, Fang B, Yan X, Zhang J, Chen R, Feng Y, Zhang Z, Gao B, Zhang L.   +12 more
europepmc   +1 more source

Remote Migratory Reductive Arylation of Unactivated Alkenes Enabled by Electrochemical Nickel Catalysis

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
we have developed an electrochemical Ni−H catalyzed arylation coupling method of unactivated alkenes with aryl halides. The method displays broad functional group tolerance and proceeds under very mild conditions. Furthermore, aryl chlorides were also compatible substrates in this catalytic system. This conversion holds significant implications for the
Chao Xu, Ru‐Han A, Xiao‐Feng Wu
wiley   +1 more source