Results 121 to 130 of about 23,969 (258)

Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds

The Chemical Record, EarlyView.
This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá, Patrick C. Nobre, Isabelly O. Ferreira, Juliano B. Azeredo, Vanessa Nascimento   +4 more
wiley   +1 more source

Efficient synthesis of π-conjugated molecules incorporating fluorinated phenylene units through palladium-catalyzed iterative C(sp2)–H bond arylations

Beilstein Journal of Organic Chemistry, 2015
We report herein a two or three step synthesis of fluorinated π-conjugated oligomers through iterative C–H bond arylations. Palladium-catalyzed desulfitative arylation of heteroarenes allowed in a first step the synthesis of fluoroaryl-heteroarene units ...
Fatiha Abdelmalek, Fazia Derridj, Safia Djebbar, Jean-François Soulé, Henri Doucet   +4 more
doaj   +1 more source

Pd−Xantphos-Catalyzed Direct Arylation of Nucleosides

, 2016
Direct arylation of the exocyclic amino groups of nucleosides represents a simple approach to N-aryl nucleoside derivatives. To date, one limitation has been that only electron-deficient aryl bromides and triflates possessed adequate reactivity for ...
Felix N. Ngassa (2510620), Mahesh K. Lakshman (1554784), Edmund A.-H. Yeh (2300611), Theothora S. Melistas (2526742), Kyle A. DeKorver (1944499)   +4 more
core   +1 more source

Trans‐resveratrol alleviates inflammation and improves skin barrier function via aryl hydrocarbon receptor pathway in human reconstructed epidermis

International Journal of Cosmetic Science, EarlyView.
In a cytokine‐challenged human epidermal model, trans‐resveratrol reduces inflammation (IL‐1α) and oxidative stress markers (CYP1A1, CYP1B1), while modulating the expression of barrier‐related genes (LOR, OCLN) and differentiation‐associated CASP14. This supports its role as a multifunctional active for sensitive and compromised skin.
Irini M. Dijkhoff, Sandeep Keshavan, Regina G. Daré, Alke Petri‐Fink, Marc Eeman, Agnès Tessier, Barbara Rothen‐Rutishauser   +6 more
wiley   +1 more source

Regioselective Diversification of Aminopyrazoles via Ir‐Catalyzed C─H Borylation

Advanced Synthesis &Catalysis, Volume 368, Issue 21, 3 November 2026.
Aminopyrazoles, an important bioactive pharmacophore, are typically accessed inefficiently through de novo syntheses that yield isomeric mixtures of 3‐ and 5‐substituted derivatives. To address this challenge, we have elaborated readily available 3‐ and 5‐aminopyrazole fragments using Ir C─H borylation, regioselectively furnishing boronates for ...
Jay S. Wright, Felipe M. Nogueira, Andrew C. Hones, Mingyan Ding, Mark A. Fox, Wender A. Silva, Angelo H. de Lira Machado, Alpay Dermenci, David C. Blakemore, Patrick G. Steel   +9 more
wiley   +1 more source

Well‐Defined Nickel Precatalysts: Form, Function, and Application

Chemistry – A European Journal, Volume 32, Issue 41, 3 November 2026.
This review provides guidance on which nickel precatalysts to choose for a given application or which properties to prioritize in reaction development. A summary of the ease of synthesis, stability, diversity, accessibility, modularity, and general applicability is provided along with a related infographic.
Morgan E. John, George A. Koutsantonis, Reto Dorta, Scott G. Stewart   +3 more
wiley   +1 more source

Direct oxidative arylation via rhodium-catalyzed C-C bond cleavage of secondary alcohols with arylsilanes

, 2012
An unprecedented example of sequential pyridinyl directed C-C cleavage of secondary alcohols/oxidative arylation with arylsilanes via Rh(III) catalysis is reported.
Lei, Zhi-Quan, Li, Hu, Chen, Kang, Shi, Zhang-Jie, Li, Yang, Zhang, Xi-Sha, Lei, ZQ (reprint author), Peking Univ, BNLMS, Minist Educ, Coll Chem, Beijing 100871, Peoples R China.   +6 more
core  

Rhodium-Catalyzed Arylation Using Arylboron Compounds:  Efficient Coupling with Aryl Halides and Unexpected Multiple Arylation of Benzonitrile

, 2016
The Suzuki−Miyaura-type cross-coupling of arylboron compounds with aryl halides proceeds efficiently in the presence of a rhodium-based catalyst system to produce the corresponding biaryls.
Tetsuya Satoh (1489648), Kenji Ueura (2460355), Masahiro Miura (308443)   +2 more
core   +1 more source

Photochemical and Thermal Activation of a Diarylbismuth Azide

Chemistry – A European Journal, Volume 32, Issue 41, 3 November 2026.
We report the synthesis and characterization of a novel diarylbismuth azide and its divergent reactivity upon thermal or photochemical activation. These findings contribute expanding the reactivity landscape of heavy pnictogen compounds and sets the basis for further investigations. ABSTRACT Azides are widely employed in synthesis as convenient nitrene
Giacomo Pugliese, Oliver Pichl, Gregor Schnakenburg, Peter Vöhringer, Luis I. Domenianni, Alessandro Bismuto   +5 more
wiley   +1 more source

Photoredox-catalyzed arylation of isonitriles by diaryliodonium salts towards benzamides

Beilstein Journal of Organic Chemistry
The arylation of isonitriles by diaryliodonium salts under photoredox conditions has been proposed for the first time. The suggested procedure allows preparing a broad range of benzamides using both symmetric and unsymmetric diaryliodonium salts under ...
Nadezhda M. Metalnikova, Nikita S. Antonkin, Tuan K. Nguyen, Natalia S. Soldatova, Alexander V. Nyuchev, Mikhail A. Kinzhalov, Pavel S. Postnikov   +6 more
doaj   +1 more source