Results 141 to 150 of about 79,822 (299)

Insights into the Photocatalytic Arene Bromination Enabled by Cs2AgBiBr6 Microparticles

Chemistry – A European Journal, EarlyView.
A sustainable photocatalytic bromination of electron‐rich arenes is enabled by low‐toxicity Cs2AgBiBr6 double‐perovskite microparticles using HBr as an atom‐economical bromine source. Surface‐derived bromine radicals drive highly selective mono‐bromination under mild conditions.
Daniele Conelli, Chiara Lo Porto, Mokurala Krishnaiah, Kimmo Lahtonen, G. Krishnamurthy Grandhi, Nicola Margiotta, Paola Vivo, Gian Paolo Suranna, Roberto Grisorio   +8 more
wiley   +1 more source

Synthesis and Characterization of Carbazole‐Containing Aza[7]helicenes

Chemistry – A European Journal, EarlyView.
Double ortho fusion led to different aza[7]helicene frameworks showing strong acidochromic behavior, singlet excited energies being more than twice the triplet energy, and high racemization barriers, allowing chiral resolution and ECD measurements. ABSTRACT Azahelicenes have attracted significant interest due to their intrinsic axial chirality and ...
Inka Marten, Melina E. A. Dilanas, Joachim Podlech   +2 more
wiley   +1 more source

Ligand‐Dependent Chemoselectivity in Gold‐Catalyzed Reactions between Anthranils and Diynamides. Formation of Spiro Azacyclic Compounds versus 1‐Imino‐1H‐Indene‐3‐Carboximidamides

ChemistryEurope
Gold‐catalyzed reactions between anthranils and diynamides have been investigated, and their reaction chemoselectivity relies on the types of gold catalysts.
Satish Bhausaheb Dawange, Rai‐Shung Liu   +1 more
doaj   +1 more source

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

Synthesis and Reactivity of Extremely Electron‐Poor Au(III) Complexes Bearing OTf− or NTf2− Ligands

Chemistry – A European Journal, EarlyView.
A new family of electron‐poor Au(III) cations bearing bistriflimide or triflate ligands is reported. These cations can undergo direct C─H metalation with simple arenes to give mono‐aryl cations. Subsequent addition of simple halide sources allows for reductive elimination of aryl halides, formally from Ar─H and X−. ABSTRACT The synthesis and structural
Lachlan Barwise, Emily Mulhallen‐Graham, Lachlan J. Moon, Lachlan Sharp‐Bucknall, Miracle I. Ekavhiare, Keith F. White, Jason L. Dutton   +6 more
wiley   +1 more source

Heteroaryl‐Substituted Polyfluorobiaryls Synthesis via Palladium‐Catalyzed Double CH Bond Functionalization Using Palladium 1,4‐Migration Associated to Direct Arylation

European Journal of Organic Chemistry, EarlyView.
Fluoro substituents on a benzene ring linked to a 2‐bromoaryl group enables the selective activation of one of its CH bonds via Pd‐1,4‐migration. Then, Pd‐catalyzed direct coupling with heteroarenes produces C2’‐heteroarylated 1,1′‐biaryls. In this reaction, the new C–C bond arises from the functionalization of two CH bonds.
Norman Le Floch, Thierry Roisnel, Henri Doucet   +2 more
wiley   +1 more source

Synthesis of Sulfur Heterocycles by Palladium‐Catalyzed Cyclization

European Journal of Organic Chemistry, EarlyView.
In spite of the well‐known palladium thiophilicity, sulfur‐containing acyclic substrates may efficiently undergo several different kinds of palladium‐catalyzed cyclization processes leading to highly important sulfur heterocycles in one synthetic step. Advances in this challenging and stimulating field of research are presented in this review.
Bartolo Gabriele
wiley   +1 more source

Silyl Rearrangements in Gold‐Catalyzed Transformations

European Journal of Organic Chemistry, EarlyView.
The synergy between the exceptional ability of gold catalysts to activate unsaturated substrates and the inherent tendency of organosilicon reagents to undergo silyl‐group rearrangements has unlocked a range of novel transformations, enabling access to otherwise challenging molecular architectures.
Patricia García‐Martínez, Luis A. López   +1 more
wiley   +1 more source

Biomass‐derived hydrochars as eco‐friendly adsorbents for wastewater treatment applications

Environmental Progress &Sustainable Energy, EarlyView.
Abstract Emerging organic pollutants (EOPs), such as diethyl phthalate (DEP), bisphenol A (BPA), and methylene blue (MB), are only partially removed in conventional wastewater treatment plants. This study assesses hydrochars produced by hydrothermal carbonization (HTC) of spruce bark (SB), vine shoots (VSs), and wheat straw (WSs) for removing three ...
Emanuel Gheorghita Armanu, Sara Ribeirinho‐Soares, Christian Eberlein, Hermann J. Heipieper, Irina Volf, Olga C. Nunes, Olívia Salomé G. P. Soares   +6 more
wiley   +1 more source

Recent Advances in Conjugated Microporous Polymers for Photocatalysis: Mechanism, Synthesis and Applications

Exploration, EarlyView.
Conjugated microporous polymers (CMPs) have attracted more and more attention as new photocatalysts due to their unique advantages such as high performance, long stability and strong light absorption. This review summarizes the application of CMPs as a photocatalyst in recent years and introduces the catalytic mechanism.
Dun Zhou, Kongqing Zhang, Xiaobai Li, Yongpeng Liu, Liang Yao, Hongwei Ma   +5 more
wiley   +1 more source