Results 101 to 110 of about 28,217,704 (208)
Phosphine-Free Palladium-Catalyzed C−H Bond Arylation of Free (N−H)-Indoles and Pyrroles
, 2016 This paper describes a phosphine-free palladium-catalyzed method for direct C-arylation of free (N−H)-indoles and pyrroles with iodo- and bromoarene donors.
Dalibor Sames (1432975) +2 more
core +1 more source
Responsive Materials, EarlyView.Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen +8 more
wiley +1 more source
Fast and Selective Dehydrogenative C–H/C–H Arylation Using Mechanochemistry
, 2016 A fast and site-selective biaryl synthesis via dehydrogenative C–H/C–H arylation in a ball mill was developed. In this paper, both electron-deficient oximes and electron-rich anilides quickly and under mild conditions provided arylation with various ...
Jiang-Qi He (1607992) +5 more
core +1 more source
Transformative Chemistry, EarlyView.A synergistic primary amine/nickel catalysis under electrochemical conditions was developed for cathodic β‐arylation and alkenylation of α‐branched acroleins. The reaction proceeds through β‐enaminyl radicals generated by cathodic reduction of an iminium ion allowing smooth coupling with aryl‐ or alkenyl‐Ni(II) species.
Yingdong Duan +3 more
wiley +1 more source
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 +4 more
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2014 The use of the congested aryl bromide 2-bromo-1,3-dichlorobenzene as coupling partner allows to modify the regioselectivity of the arylation of 3-substituted thiophene derivatives in favour of carbon C5.
Rongwei Jin +2 more
doaj +1 more source
Metal-free C–H arylation of imidazoheterocycles with aryl hydrazines
, 2018 Metal-free C–H arylation of imidazo[1,2-a]pyridines at C-3 position with arylhydrazines in presence of DBU has been developed at room temperature under ambient air.
Alakananda Hajra +4 more
core +1 more source
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 +6 more
wiley +1 more source
An easy direct arylation of 5-pyrazolones
Beilstein Journal of Organic Chemistry, 2013 A mild, efficient and catalytic ligand-free method for the direct arylation of 5-pyrazolones by Pd-catalyzed C–H bond activation is reported. The process smoothly proceeds and yields are moderate to excellent.
Hao Gong +3 more
doaj +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 +9 more
wiley +1 more source