Results 111 to 120 of about 10,808 (271)
From Phosphinimines to Four‐Membered SiCPN Cations: Insights Into N–Si Bonding and Ring Strain
European Journal of Inorganic Chemistry, EarlyView.Sterically tuned N‐silyl phosphinimines enable four‐membered SiCPN cations. Hydride abstraction yields cyclic cations for Me and iPr substituents at silicon, while tBu gives a protonated intermediate. Multinuclear NMR spectroscopy, X‐ray crystallography, thermochemical density functional theory investigations, and natural bond orbital analyses reveal ...
Alexander Falk, Jonathan O. Bauer
wiley +1 more source
Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application
European Journal of Organic Chemistry, EarlyView.Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley +1 more source
Mechanochemical Hydrodeoxygenations
European Journal of Organic Chemistry, EarlyView.A silver‐catalyzed mechanochemical hydrodeoxygenation with triethylsilane as reductant allows to convert ketones to the corresponding methylene derivatives in good yields after a short reaction time. Selected examples show that also alcohols, ethers, and sulfoxides can react. In this work, a mechanochemical hydrodeoxygenation (HDO) was developed. Using
Lena M. Hanek, Carsten Bolm
wiley +1 more source
The onset of dehydrogenation in solid Ammonia Borane, an ab-initio metadynamics study
, 2019 The discovery of effective hydrogen storage materials is fundamental for the progress of a clean energy economy. Ammonia borane ($\mathrm{H_3BNH_3}$) has attracted great interest as a promising candidate but the reaction path that leads from its solid ...
Parrinello, Michele +4 more
core +1 more source
Emerging Trends in Organic Photoreactions Utilizing Disulfides
European Journal of Organic Chemistry, EarlyView.Disulfides are versatile, nontoxic alternatives to metal photocatalysts. This review explores their role as photoactivated thiyl‐radical precursors and bifunctional catalysts (HAT/electron shuttling) in diverse transformations. Strategies for electronic tuning and development into recyclable heterogeneous materials are highlighted for sustainable ...
Sunil Kumar +3 more
wiley +1 more source
Quantum-mechanical calculations of the stabilities of fluxional isomers of C_4H_7^+ in solution [PDF]
, 2003 Although numerous quantum calculations have been made over the years of the stabilities of the fluxional isomers of C4H7+, none have been reported for other than the gas phase (which is unrealistic for these ionic species) that exhibit exceptional ...
Casanova, Joseph +3 more
core
Chan–Lam Cross‐Coupling With Alkylboron Reagents: From Transmetallation to Radical Pathways
European Journal of Organic Chemistry, EarlyView.Alkylative Chan–Lam coupling overcomes intrinsic transmetallation limitations of alkylboron reagents by engaging radical pathways. Recent advances reveal how radical and radical–polar crossover mechanisms enable mild C(sp3)—heteroatom bond formation. This minireview highlights key mechanistic insights and emerging strategies that transform alkylboron ...
Nicolas G.‐Simonian +3 more
wiley +1 more source
Exploring Stereogenic Phosphorus: The Search for New Chiral Diphosphines
CHIMIA, 2001 The synthesis of P-stereogenic ligands bearing 2,6-disubstituted phenyl groups at the P atom is a challenging problem. The results reported herein help define the scope and limitations of the existing synthetic protocols, such as Jugé's ...
Francesca Maienza +4 more
doaj
ChemistryEuropeThe CAAC‐stabilized dithiolene (L0) zwitterion (1), an unusual redox‐active intramolecular frustrated Lewis pair (FLP), activates the B─H bond of boranes via hydride‐coupled reverse electron transfer processes.
Yuzhong Wang +5 more
doaj +1 more source
Tuning the formal potential of ferrocyanide over a 2.1 V range [PDF]
, 2019 We report the synthesis and characterization of homoleptic borane adducts of hexacyanoferrate(II). Borane coordination blueshifts d–d transitions and CN IR and Raman frequencies.
Despagnet-Ayoub, Emmanuelle +4 more
core +1 more source