Results 91 to 100 of about 587,711 (268)
Chemistry – A European Journal, EarlyView.Enantioenriched α‐substituted primary amines are efficiently prepared by rhodium‐catalyzed asymmetric transfer hydrogenation of ortho‐hydroxyaryl N─H imines under mild conditions using a low catalyst loading and ammonium formate as the hydrogen source in high yields (up to 99%) and enantioselectivities (up to 99% ee).
Chonghuo Liu +4 more
wiley +1 more source
Polycopié de Cours de Chimie Organique 2
Le fascicule pédagogique que nous présentons s’adresser particulièrement aux étudiants de deuxième année Licence Science de la Matière (SM). Il sera également utile pour les étudiants d’autres spécialités, Science Biologique (SNV), Médicales et ...
Aksil, Tounsia
core
Multi‐Scale Investigation of Supramolecular Organogels Assembled From Pt(II)‐Salphen Complexes
Chemistry – A European Journal, EarlyView.A family of Pt(II)‐salphen complexes with long alkyl chains is investigated as low‐molecular‐weight organogelators. Multi‐scale characterization of their supramolecular gels reveals how the chain length, Pt‐Pt interactions, and π–π stacking direct self‐assembly and tune gel mechanics.
Pablo Msellem +7 more
wiley +1 more source
Stereoselective Synthesis of β‐C‐glycosides From Exoglycals Through Radical C─C Bond Formation
Chemistry – A European Journal, EarlyView.We describe herein a convenient strategy for the preparation of β‐C‐glycosides via the addition of radical species onto exoglycals. This method is efficient, general and achieved in mild conditions starting from xanthates derivatives and using triethylborane as initiator and 4‐tert‐butylcatechol as hydrogen atom source. This hydroalkylation reaction is
Noémie Murard +2 more
wiley +1 more source
Access to Uncharted (Ethoxy)difluoromethylated‐Containing Tetrahydrofurans by Hydrogenation
Chemistry – A European Journal, EarlyView.A Pd/C‐catalyzed selective hydrogenation of (ethoxy)difluoromethylated‐containing tetrahydrofurans was achieved. Depending on the pressure of H2, a divergent process led to either cis CF2CO2Et‐containing tetrahydrofurans or valuable α,α‐difluoro‐β‐hydroxyesters, offering key fluorinated building blocks for drug discovery while keeping the CF2CO2Et ...
Thibaud Charvillat +7 more
wiley +1 more source
Chimie générale et industrielle /
, 1920 1. Chimie inorganique : introduction (historique, lois chimiques, nomenclature). Métalloïdes (1ère partie) / trad. par J.-A. Montpellier2. Chimie inorganique : métalloïdes (suite et fin) / trad. par J.-A. Montpellier3. Chimie inorganique : métaux / trad.
Molinari, Ettore,1867-1926(viaf)6567973 +3 more
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Chemistry – A European Journal, EarlyView.A new silver‐catalyzed H/D exchange reaction was developed for the labelling of quinones and related compounds. Both homogeneous and heterogeneous catalytic processes were implemented using heavy water as a simple deuterium source. The corresponding deuterated compounds were obtained with high isotopic enrichment through a practical method that opens ...
Joyce C. de Oliveira +7 more
wiley +1 more source
, 2015 La chimie au Collège de France a fait l’objet d’une attention toute particulière au cours des dernières années. Après les départs des professeurs Jean-Marie Lehn et Jacques Livage, une ambition nouvelle pour cette discipline s’est traduite par plusieurs ...
Fontecave, Marc
core +1 more source
Chemistry – A European Journal, EarlyView.A triangular double‐decker Ni6 complex self‐assembles from Ni(II), TMEDA, and a triphenylene tris dioxolene non‐innocent ligand, with two face‐to‐face tris‐semiquinone decks held by a strong covalent C─C interaction. This rigid scaffold delivers four reversible ligand‐centered redox events: oxidation switches on an intense near‐infrared band and ...
Aristide Colin +12 more
wiley +1 more source