Results 81 to 90 of about 3,271,959 (246)

Recent Advances in Ionizing Radiation as a Nonequilibrium Chemical Field for Catalysis

Carbon and Hydrogen, EarlyView.
Ionizing radiation acts as a nonequilibrium chemical field that generates reactive species and structural perturbations. These radiation‐induced effects bridge catalytic material construction, including metal loading, framework evolution, defect engineering, and carbon‐network reorganization, with selective transformations such as oxidation, reduction,
Junhua Kuang, Zhuo Liu, Jinlong Wan, Wenjie Duan, Li Peng, Liuxuan Cao, Jia Yu, Jian‐Feng Li, Shuliang Yang   +8 more
wiley   +1 more source

C‐Terminal Functionalization Methods of Amino Acids, Peptides, and Proteins

Chemistry – A European Journal, EarlyView.
C‐terminal functionalization offers powerful routes to peptide and protein diversification, yet epimerization, hydrolysis, and selectivity remain key challenges. This Review surveys enzymatic, decarboxylative, and condensation strategies, highlighting advances toward chemo‐ and regioselective, protecting‐group‐free, atom‐efficient methods applicable to
Jay Hanssens, Mark Lambers, Romano V. A. Orru, Jordy M. Saya   +3 more
wiley   +1 more source

Domino Palladium-Catalyzed Heck-Intermolecular Direct Arylation Reactions

, 2016
A domino palladium-catalyzed Heck-intermolecular direct arylation reaction has been developed, giving access to a variety of dihydrobenzofurans, indolines, and oxindoles.
David Lapointe (108926), Olivier René (1508119), Keith Fagnou (2029873)   +2 more
core   +2 more sources

Nickel-Catalyzed Direct Arylation of Azoles with Aryl Bromides

, 2016
Nickel catalyst systems for the direct C2 arylation of oxazoles and thiazoles have been developed. The catalyst systems are cost-efficient and allow the use of various aryl bromides in the C−H arylation of ...
Hitoshi Hachiya (2191477), Koji Hirano (1452925), Tetsuya Satoh (1489648), Masahiro Miura (308443)   +3 more
core   +1 more source

Azoimidazolium Salts as a Platform for Persistent Neutral Aminyl Radicals and Mesoionic Carbene Au(I) Complexes as Cell‐Permeable Fluorophores

Chemistry – A European Journal, EarlyView.
Strategic electronic matching between imidazolium salts and aryldiazonium salts enables a chromatography‐free route to versatile azoimidazolium scaffolds. Fine‐tuning the substituents unveils a powerful dichotomy: strong ─OMe resonance stabilizes highly persistent neutral aminyl radicals (up to 3 weeks), whereas the superior ─NMe2 donor strength yields
Diego Dusso, Osvaldo F. López‐Saladino, Ixsoyen F. Vázquez‐Sandoval, Arturo Jiménez‐Sánchez, Virginia Gómez‐Vidales, Marcos Flores‐Álamo, Susana Porcel‐García   +6 more
wiley   +1 more source

Direct N ⁹ -arylation of purines with aryl halides

Chem. Commun., 2014
The reported protocol is the first to be demonstrated to efficiently couple aryl halides to purines with predictable selectivity.
Larsen, Anders Foller, Ulven, Trond
openaire   +4 more sources

Direct Intermolecular Aniline Ortho-Arylation via Benzyne Intermediates

, 2016
A method for direct, transition-metal-free ortho-arylation of anilines by aryl chlorides, bromides, fluorides, and triflates has been developed. This methodology provides the most direct approach to 2-arylanilines since no protecting or directing groups ...
Olafs Daugulis (1322985), Thanh Truong (235600)   +1 more
core   +1 more source

Selective Formation of a 1,2‐Diborane(4) and Alcohol‐Driven B─B Bond Cleavage to Generate H2

Chemistry – A European Journal, EarlyView.
Diborane(4) chemistry reveals unusual reactivity of electron‐deficient p‐block compounds. Reaction of B2Cat2 (Cat = benzene‐1,2‐diolate) with mesityllithium (MesLi; Mes = 2,4,6‐trimethylphenyl) gives a rare 1,2‐diborane(4) featuring a catecholate ligand. Alcoholysis cleaves the B─B bond and ultimately generates H2.
Rayni P. Noriega, David J. Nelson, Marcus W. Drover   +2 more
wiley   +1 more source

N-Benzoyl dithieno[3,2-b:2′,3′-d]pyrrole-based hyperbranched polymers by direct arylation polymerization

Chemistry Central Journal, 2017
Background Although poly(N-acyl dithieno[3,2-b:2′,3′-d]pyrrole)s have attracted great attention as a new class of conducting polymers with highly stabilized energy levels, hyperbranched polymers based on this monomer type have not yet been studied. Thus,
Tam Huu Nguyen, Thu Anh Nguyen, Hoan Minh Tran, Le-Thu T. Nguyen, Anh Tuan Luu, Jun Young Lee, Ha Tran Nguyen   +6 more
doaj   +1 more source

Synthesis of Unsymmetrical 2,2′-Biindolyl Derivatives by a Cu-Catalyzed N-Arylation/Pd-Catalyzed Direct Arylation Sequential Process

, 2016
A one-pot synthesis of unsymmetrical 2,2′-biindolyl derivatives through a Cu-catalyzed N-arylation/Pd-catalyzed direct arylation sequence was described. The reaction involved easily prepared o-gem-dibromovinyl substrates, and the desired biindolyls were ...
Zhi-Jing Wang (2233711), Fan Yang (1413), Weiliang Bao (1696759), Xin Lv (770855)   +3 more
core   +1 more source