Results 101 to 110 of about 22,861 (258)

Synthesis of Tris(indol‐3‐yl)methanes From Indoles, CO2, and Dimethylphenylsilane With BPh3: Two‐Step Construction of π‐Conjugated Systems

open access: yesChemistry – A European Journal, EarlyView.
Tris(indol‐3‐yl)methanes were synthesized from indoles, CO2, and PhMe2SiH in the presence of BPh3 in acetonitrile at 50°C. One product, tris(4‐bromo‐1‐methylindol‐3‐yl)methane, underwent a palladium‐catalyzed cascade reaction for the formation of a novel polycyclic heteroaromatic compound, where the methine C(sp3) atom originating from CO2 was ...
Sha Li   +5 more
wiley   +1 more source

Rh(II)-Catalysed N2-Selective Arylation of Benzotriazoles and Indazoles using Quinoid Carbenes via 1,5-H Shift [PDF]

open access: yes
A Rh(II)-catalyzed highly selective N2-arylation of benzotriazole is developed with wide scope and good functional group tolerance. The reaction is also extended on indazole and substituted 1,2,3-triazole scaffolds.
Arnadeep, Datta   +5 more
core   +2 more sources

Exogenous Directing Group Free, Ligand-Enabled gamma-C(sp3)–H Arylation of Free Primary Aliphatic Amines and α-Amino Esters [PDF]

open access: yes, 2019
A Pdᴵᴵ-catalyzed, ligand-enabled gamma-C(sp3)–H arylation of free primary aliphatic amines and amino esters without using an exogenous directing group is reported.
Gang, Li   +4 more
core   +2 more sources

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

open access: yesChemistry – 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   +3 more
wiley   +1 more source

Photochemical and Thermal Activation of a Diarylbismuth Azide

open access: yesChemistry – A European Journal, EarlyView.
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   +5 more
wiley   +1 more source

Photoredox-catalyzed arylation of isonitriles by diaryliodonium salts towards benzamides

open access: yesBeilstein 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   +6 more
doaj   +1 more source

Nucleophilic Arylation of Halopurines Facilitated by Brønsted Acid in Fluoroalcohol

open access: yesMolecules, 2019
Various aryl-substituted purine derivatives were synthesized through the direct arylation of halopurines with aromatic compounds, facilitated by the combination of triflic acid and fluoroalcohol.
Naoko Takenaga   +7 more
doaj   +1 more source

Infrared Irradiation‐Assisted Pd‐Catalyzed C(sp3)─H Arylation and Tandem Cyclization of Ortho‐Tolualdehydes

open access: yesChemistry – A European Journal, EarlyView.
A rapid and efficient protocol for the synthesis of 2‐benzylbenzaldehydes and anthracenes is reported, based on the infrared (IR) irradiation‐assisted Pd‐catalyzed C(sp3)─H arylation and the tandem C(sp3)─H arylation/electrophilic aromatic cyclization of ortho‐tolualdehydes with aryl iodides via a transient directing group (TGD) strategy.
Matteo Renato Martina   +6 more
wiley   +1 more source

Regiocontroled Pd-catalysed C5-arylation of 3-substituted thiophene derivatives using a bromo-substituent as blocking group

open access: yesBeilstein Journal of Organic Chemistry, 2016
The use of a bromo-substituent as blocking group at the C2-position of 3-substituted thiophenes allows the regioselective introduction of aryl substituents at C5-position via Pd-catalysed direct arylation.
Mariem Brahim   +3 more
doaj   +1 more source

Remote Migratory Reductive Arylation of Unactivated Alkenes Enabled by Electrochemical Nickel Catalysis

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
we have developed an electrochemical Ni−H catalyzed arylation coupling method of unactivated alkenes with aryl halides. The method displays broad functional group tolerance and proceeds under very mild conditions. Furthermore, aryl chlorides were also compatible substrates in this catalytic system. This conversion holds significant implications for the
Chao Xu, Ru‐Han A, Xiao‐Feng Wu
wiley   +1 more source

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