Results 81 to 90 of about 6,933 (191)

Triphenyl{(E)-4-[4-(phenyldiazenyl)phenyl]-4H-1,2,4-triazol-1-yl}boron

open access: yesActa Crystallographica Section E, 2009
In the title compound, C32H26BN5 or [(C14H11N5)B(C6H5)3], the B atom is approximately tetrahedrally coordinated. The diazo unit is in a trans conformation, which is generally more stable than a cis one for aromatic azo compounds.
Daisuke Urakami   +2 more
doaj   +1 more source

Counterion Effects on the Properties and Reactivity of Charged Photoredox Catalysts

open access: yesChemPhotoChem, Volume 10, Issue 8, August 2026.
The choice of a counterion for a charged photocatalyst has long been overlooked. In this review, we summarize recent reports on counterion effects in photocatalysis, providing readers with a comprehensive theoretical understanding and synthetic applications for the use of a carefully chosen counterion. Electrostatic interactions represent the strongest
Elina K. Taskinen, Burkhard König
wiley   +1 more source

Main Group Metals in Redox Catalysis

open access: yesEuropean Journal of Inorganic Chemistry, Volume 29, Issue 22, 1 August 2026.
Main group metal redox catalysis is emerging as a credible alternative to transition metal chemistry. Elements from groups 13 to 15 now enable diverse catalytic manifolds, driven by ligand design and control of electronic structure. This review highlights recent advances, key design principles, and remaining challenges, positioning main group metals as
Olympia Mouriki   +2 more
wiley   +1 more source

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

open access: yesAngewandte Chemie, Volume 138, Issue 29, 13 July 2026.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera   +2 more
wiley   +2 more sources

Isoxazolium N-ylides and 1-oxa-5-azahexa-1,3,5-trienes on the way from isoxazoles to 2H-1,3-oxazines

open access: yesBeilstein Journal of Organic Chemistry, 2014
Theoretical and experimental studies of the reaction of isoxazoles with diazo compounds show that the formation of 2H-1,3-oxazines proceeds via the formation of (3Z)-1-oxa-5-azahexa-1,3,5-trienes which undergo a 6π-cyclization.
Alexander F. Khlebnikov   +6 more
doaj   +1 more source

Advances in Pharmacological Therapy of Benign Tracheal Stenosis: A Meta‐Analysis of Preclinical Studies

open access: yesLaryngoscope Investigative Otolaryngology, Volume 11, Issue 4, August 2026.
ABSTRACT Background Benign tracheal stenosis, characterized by granulation hyperplasia, is a rare and serious disease threatening human health. Interventional bronchoscopy demonstrates limited therapeutic efficacy and poses a risk of re‐injury to the airway.
Dengyuan Li   +4 more
wiley   +1 more source

Large‐Diameter DNA‐Scaffolded Nanopores Enabled by Loosely Packed Peptides for Single‐Molecule Sensing

open access: yesAngewandte Chemie, Volume 138, Issue 29, 13 July 2026.
A nanopore composed of transmembrane peptides and a DNA scaffold that assists peptide assembly was constructed. By employing peptides containing the unnatural amino acid 2‐aminoisobutyric acid (Aib), which promotes loose packing between helices, a large‐diameter nanopore was achieved.
Zugui Peng   +3 more
wiley   +2 more sources

Diels–Alder Cycloaddition of N-Azobenzene Maleimides with Furan and Electrochemical Study of Redox Reactions

open access: yesReactions
This work reports the synthesis of aminoazobenzene compounds derived from 3,5-dimethylaniline (1a–1f) via a diazo-coupling reaction with aromatic amines.
David Fernando Venegas-Villalvazo   +5 more
doaj   +1 more source

An Ultrafast Time Resolved Infrared and Computational Study of the Photochemistry of Ethyl 2‐Diazo‐3,3,3‐Trifluoropropanoate (CF3CN2CO2Et)

open access: yesJournal of Physical Organic Chemistry, Volume 39, Issue 8, August 2026.
The photochemistry of ethyl 2‐diazo‐3,3,3‐trifluoropropanoate shows that its excited singlet state undergoes internal conversion, carbene formation, and diazirine formation. The resulting singlet carbene reacts through solvent‐dependent pathways, forming ylides in methanol and acetonitrile or a C–Cl insertion product in chloroform.
Jojo Joseph   +8 more
wiley   +1 more source

Lightening Diazo Compounds? [PDF]

open access: yesACS Sustainable Chemistry & Engineering, 2021
Jakub Durka   +2 more
openaire   +1 more source

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