Results 81 to 90 of about 12,716 (277)

Synthesis of 1‐Alkynylboronates, 1,1‐Diborylalkenes, and 1,1,1‐Triborylalkanes: Challenges and Opportunities

Chemistry – A European Journal, EarlyView.
ABSTRACT In the field of organoboron chemistry, multi(boronate) esters have emerged as crucial intermediates, with various applications in synthetic chemistry, material technology, and life sciences. This mini‐review discusses recent advancement in the synthesis of these versatile compounds, particularly alkynylboronates, 1,1‐diborylalkenes, and 1,1,1 ...
Son Hoai Doan, Vu Nguyen Tran, Thanh Vinh Nguyen   +2 more
wiley   +1 more source

Synthesis of beta-benzo[b]thienyldehydrophenylalanine derivatives by one pot palladium-catalyzed borylation and Suzuki coupling (BSC) and metal-assisted intramolecular cyclization: studies of fluorescence and antimicrobial activity [PDF]

, 2005
Palladium-catalyzed borylation and Suzuki coupling (BSC) in a one pot procedure was successfully applied to the synthesis of several beta-substituted dehydrophenylalanines in the benzo[b]thiophene series maintaining the stereochemistry of the starting ...
Abreu, Abreu, Abreu, Abreu, Baudoin, Baudoin, Begouin, Broutin, Cagniant, Demas, Dubest, Fery-Forges, Hawkey, Kirsch, Kirsch, Morris, Rameshkumar, Wolfe, Wolfe   +18 more
core   +2 more sources

Photocatalytic Vanadium‐Mediated Amination of Benzene With Hydroxylamine

Chemistry – A European Journal, EarlyView.
Photochemical activation of N‐phenylphenothiazine (PPT) enables a selective direct benzene amination with hydroxylamine in the presence of various vanadium catalysts under mild reaction conditions. Spectroscopic and kinetic analyses identify a key vanadium(IV)‐hydroxylamine intermediate, elucidate the crucial roles of the acidic medium, the ...
Dana Králová, Maximilian Philipp, Matthias Schmalzbauer, Thilo Reiter, Bernd Schäfer, Ruth M. Gschwind, Burkhard König   +6 more
wiley   +1 more source

Mechanochemical Sequential Deoxygenative Cross-Coupling Reactions of Phenols Under Ruthenium-Nickel Catalysis

Molecules
Herein, we report the first mechanochemical strategy for the Ru-catalyzed deoxygenative borylation of free phenols via C–O bond cleavage. This Ru-catalyzed phenolic borylation approach has been successfully extended to the Suzuki–Miyaura-type cross ...
Satenik Mkrtchyan, Vishal B. Purohit, Michał Jakubczyk, Vaibhav D. Prajapati, Ronak V. Prajapati, Michael G. Garcia, Eugene Karpun, Vitaliy Yepishev, Manoj K. Saini, Sehrish Sarfaraz, Khurshid Ayub, Gabriela Addová, Juraj Filo, Viktor O. Iaroshenko   +13 more
doaj   +1 more source

A Biocatalytic Platform for Synthesis of Chiral α-Trifluoromethylated Organoborons [PDF]

, 2018
There are few biocatalytic transformations that produce fluorine-containing molecules prevalent in modern pharmaceuticals. To expand the scope of biocatalysis for organofluorine synthesis, we have developed an enzymatic platform for highly ...
Arnold, Frances H., Garcia-Borràs, Marc, Houk, K. N., Huang, Xiongyi, Kan, S. B. Jennifer, Miao, Kun, Zutshi, Arjun   +6 more
core   +3 more sources

Accessing Sn≥2 States of a TADF Emitter by Femtosecond NIR Spectroscopy

Chemistry – A European Journal, EarlyView.
The depicted thermally activated delayed fluorescence (TADF) emitter was studied by femtosecond near‐infrared (NIR) spectroscopy. A prominent NIR transition was shown to be strongly solvent‐dependent, with implication for intersystem crossing in the compound.
Wiebke Haselbach, Jasmin Matthes, Andreas Prüfer, Simon L. Zimmermann, Monika Flörke, Thomas J. J. Müller, Peter Gilch, Barbara E. Nogueira de Faria   +7 more
wiley   +1 more source

Total Synthesis of the Spirocyclic Bis‐Indole Alkaloid (−)‐Owerreine via a [4+2] Annulation

Angewandte Chemie, Volume 138, Issue 17, 20 April 2026.
The total synthesis of the bis‐indole alkaloid (−)‐owerreine has been accomplished by a diastereoselective [4+2] annulation between an enamine and an α,β−unsaturated indolenine precursor to form the 3‐spirocyclic tetrahydropyridine linkage of the natural product. DFT calculations allow an understanding of the mechanism of the key annulation.
Elisa Coll, Vincent Gandon, Cyrille Kouklovsky, Laurent Evanno, Guillaume Vincent   +4 more
wiley   +2 more sources

Poly-p-hydroquinone Ethers: Isoenergetic Molecular Wires with Length-Invariant Oxidation Potentials and Cation Radical Excitation Energies [PDF]

, 2017
Typical poly-p-phenylene wires are characterized by strong interchromophoric electronic coupling with redox and optical properties being highly length-dependent.
Chebny, Vincent J., Ivanov, Maxim Vadimovich, Rathore, Rajendra, Talipov, Marat R.   +3 more
core   +5 more sources

Photoinduced Solution‐Stable Radicals via Intramolecular Charge Separation From anti‐Kasha Emissive BN‐Azepines

Electron, EarlyView.
A series of BN‐azepines with a twisted heptagonal B–N donor–acceptor framework was synthesized, enabling stable photoinduced radicals in solution. Upon photoexcitation, charge separation between the triarylamine donor and boron acceptor yields a longer‐lived triplet state, which can generate a nitrogen radical cation through electron transfer.
Lingjuan Chen, Jiaqi Dong, Qingliang Feng, Deng‐Tao Yang   +3 more
wiley   +1 more source

Enantioselective Cu(I)-catalyzed borylative cyclization of enone-tethered cyclohexadienones and mechanistic insights

Nature Communications, 2022
Rapidly building molecular structures with both elements of complexity and flexibility is a key goal of organic synthesis. Here the authors show a tandem copper-catalyzed β-borylation/Michael addition on prochiral enone-tethered 2,5-cyclohexadienones, to
Sandip B. Jadhav, Soumya Ranjan Dash, Sundaram Maurya, Jagadeesh Babu Nanubolu, Kumar Vanka, Rambabu Chegondi   +5 more
doaj   +1 more source