Results 261 to 270 of about 38,475 (330)
Fluorenyl Cations: Synthesis and Reactivity
This review covers the history of fluorenyl cations from Deno's first report in 1954 on the parent fluorenyl cation to the present. The parent cation and most derivatives have only been observed as a fleeting species by mass spectrometry, UV/Vis spectroscopy, IR spectroscopy, or NMR spectroscopy while recent developments led to isolable species ...
Kanika Vashisth+5 more
wiley +1 more source
Asymmetric alkyl-alkyl coupling between electron-deficient and unactivated alkenes to access α-chiral phosphines by Ni catalysis. [PDF]
Zou JY+5 more
europepmc +1 more source
Ruthenium-catalysed hydrogenation of esters using tripodal phosphine ligands
Boardman, B+3 more
core +1 more source
The “gold‐catalyzed Heck reaction” could in principle proceed either via nucleophilic attack by triflate, or by migratory alkene insertion. This DFT study shows that nucleophilic attack is strongly preferred but ligand dependent. Abstract The initial reaction steps in the formation of Heck‐type arylated alkenes catalyzed by P^N chelated Au(III ...
Peter H. M. Budzelaar+2 more
wiley +1 more source
The retro‐Cope bioorthogonal reactivity of hydroxylamines was disabled transiently with a coumarin photolabile protecting group, which could be recovered upon removal of the protecting group by a short, 400 nm light illumination. Light‐controlled recovery of reactivity was demonstrated in bioorthogonal fluorescent labeling schemes of intracellular ...
Krisztina Németh+5 more
wiley +1 more source
Difluoroenol phosphinates as difluoroenolate surrogates: synthesis and applications in defluorination and deoxygenative coupling. [PDF]
Kurosawa MB+3 more
europepmc +1 more source
Nitrile Hydroboration by Cooperative Iron Catalysis: An Experimental and Computational Study
We describe the Fe‐catalyzed double hydroboration of nitriles using HBpin as the terminal reductant. Mechanistic studies, both experimental and computational, reveal a unique and unreported mechanistic pathway for iron‐catalyzed hydroboration where reductive elimination, rather than B─H bond activation is the rate‐ limiting step.
Laura A. Grose+5 more
wiley +1 more source
Cooperativity in the assembly of H-bonded duplexes of synthetic recognition-encoded melamine oligomers. [PDF]
Dhiman M+3 more
europepmc +1 more source