Results 151 to 160 of about 3,741,215 (311)

Sustainable Nonenantioselective Production and Stereochemical Characterization of the Lignin-Derived Chiral Building Block 3-Carboxymuconolactone. [PDF]

ChemistryOpen
Suzuki Y, Araki T, Fujita M, Kamimura N, Masai E, Michinobu T, Otsuka Y, Hishiyama S, Nakamura M.   +8 more
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

Chemical epigenetic modification uncovers new isocoumarins from the endophyte <i>Dothideomycetes</i> sp. BMC-101. [PDF]

RSC Adv
Cong Y, Wang H, Wang H, Jiang J, Li L, Wu R, Zhang Y, Huo Q, Zhu M.   +8 more
europepmc   +1 more source

Coordination Chemistry of Boron Subphthalocyanine With BINOL Derivatives: Unexpected Oxidation to Oxa[4]Helicene and Properties of the Resulting Axially Coordinated Complexes Containing Oxa[4]Helicene and/or BINOL Derivatives

Chemistry – A European Journal, EarlyView.
Treatment of BINOL with a boron subphthalocyanine derivative resulted in the formation of a complex coordinated to an oxa[4]helicene derivative, which is generated via a ring‐closure reaction of BINOL. In contrast, treatment of the monomethyl ether of 1,1′‐bi‐2‐naphthol (BINOL) afforded the expected axially coordinated complex.
Shafikul Islam, Kazuyuki Asahi, Hiroyuki Nishikawa, Daiki Tauchi, Masashi Hasegawa, Ken‐ichi Sugiura   +5 more
wiley   +1 more source

A Convenient Laboratory-Scale Synthesis Route Toward the PPARα Agonist Pemafibrate. [PDF]

ChemistryOpen
Morlion F, Clarisse D, De Bosscher K, D'hooghe M.   +3 more
europepmc   +1 more source

Chiral Pyrazolinylidene Complexes for Asymmetric Catalysis

Chemistry – A European Journal, EarlyView.
The synthesis and application of pyrazolin‐5‐ylidene NHC chiral‐at‐ruthenium catalysts is reported. The strong donating pyrazolin‐5‐ylidene ligands led to highly electron rich ruthenium complexes, which showed excellent catalytic activity and enantioselectivity in the intramolecular aziridination of an alkene.
Felix Möller, Nemrud Demirel, Thomas Krüger, Linus Plohnke, Jennifer Schröder, Sergei I. Ivlev, Eric Meggers   +6 more
wiley   +1 more source

Fusaric Acid Analogs and Dimers from Marine-Derived <i>Fusarium</i> sp.: Biosynthetic Insights and Chloramphenicol-Enhanced Antibacterial Activity. [PDF]

J Nat Prod
Zaman KAU, Petriti V, Dhakal D, Sarotti AM, Yan C, Wu X, Wu Z, Jiang Y, Rubin GM, Turkson J, Zheng G, Ding Y, Cao S.   +12 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

The Hidden Threat of Pharmaceuticals: Ketoprofen Degradation and Toxicity to Non-Target Organisms. [PDF]

Molecules
Solski P, Guzik U, Wojcieszyńska D.
europepmc   +1 more source

Chiral‐at‐Metal Racemization of Tris‐Chelated Octahedral Complexes: A DFT Case Study of Al(acnac)3

Chemistry – A European Journal, EarlyView.
Racemization and isomerization of M(a‐chel)3 complexes was unraveled using Al(acnac)3 as a model. The ∆/Λ‐fac isomers have four racemization paths of which one includes isomerization to and racemization of the mer isomer. N‐substitution should enable separation of the ∆‐fac and Λ‐fac enantiomers.
George Dhimba, Alfred Muller, Koop Lammertsma   +2 more
wiley   +1 more source