Results 81 to 90 of about 6,583 (223)

Mechanochemical Sequential Deoxygenative Cross-Coupling Reactions of Phenols Under Ruthenium-Nickel Catalysis

Molecules
Herein, we report the first mechanochemical strategy for the Ru-catalyzed deoxygenative borylation of free phenols via C–O bond cleavage. This Ru-catalyzed phenolic borylation approach has been successfully extended to the Suzuki–Miyaura-type cross ...
Satenik Mkrtchyan, Vishal B. Purohit, Michał Jakubczyk, Vaibhav D. Prajapati, Ronak V. Prajapati, Michael G. Garcia, Eugene Karpun, Vitaliy Yepishev, Manoj K. Saini, Sehrish Sarfaraz, Khurshid Ayub, Gabriela Addová, Juraj Filo, Viktor O. Iaroshenko   +13 more
doaj   +1 more source

Pyridine-promoted dediazoniation of aryldiazonium tetrafluoroborates: Application to the synthesis of SF5-substituted phenylboronic esters and iodobenzenes

Beilstein Journal of Organic Chemistry, 2015
Pyridine promotes dediazoniation of aryldiazonium tetrafluoroborates. The formed aryl radicals were trapped with B2pin2, iodine, or tetrahydrofuran to afford boronic esters, iodobenzenes and benzenes, respectively.
George Iakobson, Junyi Du, Alexandra M. Z. Slawin, Petr Beier   +3 more
doaj   +1 more source

Cellular Membrane‐Targeted Europium(III) Probe for Selective and Time‐Resolved Detection of Peroxynitrite

Chemistry – A European Journal, EarlyView.
We report a cellular membrane‐targeted europium(III) probe, Eu.Chol, that enables selective, time‐resolved detection of peroxynitrite (ONOO−) at the cell membrane interface. Eu.Chol demonstrates efficient incorporation into liposomes and Jurkat cells, with minimal response to H2O2, establishing a modular platform for subcellular ONOO− sensing ...
Jamie Webb, Rebecca Tiffany, Karolis Norvaisa, Hennie Valkenier, Lea Miebach, Sander Bekeschus, Stephen J. Butler   +6 more
wiley   +1 more source

Nickel-catalyzed, silyl-directed, ortho-borylation of arenes via an unusual Ni(II)/Ni(IV) catalytic cycle

Nature Communications
Nickel-catalyzed C–H bond functionalization reactions provide an impressive alternative to those with noble metal catalysts due to their unique reactivity and low cost.
Xiaoshi Su, Guoao Li, Linke He, Shengda Chen, Xiaoliang Yang, Guoqiang Wang, Shuhua Li   +6 more
doaj   +1 more source

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

Chemistry – A European Journal, EarlyView.
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

Trialkoxysilane-Induced Iridium-Catalyzed para-Selective C–H Bond Borylation of Arenes

Nature Communications
An ideal approach for the construction of aryl boron compounds is to selectively replace a C–H bond in arenes with a C–B bond, and controlling regioselectivity is one of the most challenging aspects of these transformations.
Guodong Ju, Zhibin Huang, Yingsheng Zhao
doaj   +1 more source

Synthesis and Photophysical Properties of Star‐Shaped Triphenylamine Trimers Functionalized With BODIPY and Subphthalocyanine Chromophores

Chemistry – A European Journal, EarlyView.
This study investigates how molecular topology influences the photophysical properties of star‐shaped, threefold‐symmetric triphenylamine (TPA) derivatives functionalized with three BODIPY or SubPc units. Their absorption spectra exhibit minimal solvatochromism, whereas their fluorescence intensity is strongly dependent on solvent polarity.
Habiba Boughanmi, Paula de la Rubia, Jamel‐Eddine Khiari, Tomás Torres, José García‐Calvo   +4 more
wiley   +1 more source

Novel approaches to aromatic C–H borylation [PDF]

, 2023
This thesis primarily explores novel approaches to C–H borylation in substrates containing (hetero)arenes. Chapter 1 provides an overview of the recent advances in aromatic C–H borylation, as well as free radical C–X borylation.
Cross, Matthew
core   +1 more source

Organometallic-type reactivity of stable organoboronates for selective (hetero)arene C−H/C-halogen borylation and beyond

Nature Communications
Organometallic reagents are essential tools in both academic and industrial laboratories and the polarity separation within the carbon-metal bonds endows them with exceptional reactivities, but also imposes limitations, including air- and moisture ...
Xueting Liu, Daojing Li, Guoao Li, Mengran Wei, Shihao Yuan, Mo Yang, Linke He, Shengda Chen, Zhenxing Li, Liuzhou Gao, Guoqiang Wang, Shuhua Li   +11 more
doaj   +1 more source

Regioisomerism Rewires Optical and Ion Recognition Properties in Azulenylsumanenes—Curved Non‐Alternant π‐Systems

Chemistry – A European Journal, EarlyView.
Regioisomerism rewires orbital topology and electronic polarity in curved non‐alternant π‐systems, switching both optical response and alkali metal ion recognition from Na+ to Rb+ selectivity. ABSTRACT Herein, we explore the fundamental concept of combining the molecular curvature of a molecular fragment of buckminsterfullerene with the pronounced ...
Jakub Cyniak, Anna Mazur, Bartłomiej Pigulski, Hidehiro Sakurai, Artur Kasprzak   +4 more
wiley   +1 more source