Results 21 to 30 of about 28,217,704 (208)

A cooperative Pd-Cu system for direct C-H bond arylation [PDF]

open access: yes, 2014
The authors are grateful to the Royal Society (University Research Fellowship to CSJC) for financial support.A novel and efficient method for C-H arylation using well-defined Pd- and Cu-NHC systems has been developed.
Cazin, Catherine   +3 more
core   +1 more source

Copper-catalyzed remote C–H arylation of polycyclic aromatic hydrocarbons (PAHs)

open access: yesBeilstein Journal of Organic Chemistry, 2020
The regioselective C–H arylation of substituted polycyclic aromatic hydrocarbons (PAHs) is a desired but challenging task. A copper-catalyzed C7–H arylation of 1-naphthamides has been developed by using aryliodonium salts as arylating reagents.
Anping Luo   +5 more
doaj   +1 more source

Sulfur Mediated Allylic C-H Arylation, Epoxidation and Aziridination [PDF]

open access: yes, 2019
Transition-metal-free, sulfur mediated allylic C-H arylation, epoxidation and aziridination were realized through one-pot procedures. The reaction design involved initial addition between olefins and triflic anhydride activated sulfoxides, followed by ...
Gang, Hu, Hang, Luo, Pingfan, Li
core   +1 more source

Efficient synthesis of 3,6,13,16-tetrasubstituted-tetrabenzo[a,d,j,m]coronenes by selective C–H/C–O arylations of anthraquinone derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2020
An efficient synthesis of tetrabenzo[a,d,j,m]coronene derivatives having alkyl and alkoxy substituents at the 3, 6, 13, and 16-positions was achieved based on the ruthenium-catalyzed coupling reactions of anthraquinone derivatives with arylboronates via ...
Seiya Terai   +3 more
doaj   +1 more source

A Dual Catalytic Platform for Enabling sp3 α C–H Arylation & Alkylation of Benzamides [PDF]

open access: yes, 2019
A dual catalytic sp3 a C–H arylation & alkylation of benzamides with organic halides is described. This protocol exhibits excellent chemoselectivity and exquisite site-selectivity, offering a complementary reactivity mode to existing sp3 arylation or ...
Jessica, Giacoboni   +5 more
core   +2 more sources

Direct C–H Alpha Arylation of Enones with ArI(O2CR)2 Reagents [PDF]

open access: yes, 2019
Herein, we report the metal-free direct C–H arylation of enones mediated by hypervalent iodine reagents. The reaction proceeds via a reductive iodonium Claisen rearrangement of in situ b-pyridinium silyl enol ethers.
Felipe Cesar Sousa e Silva (7520025)   +5 more
core   +2 more sources

Site-Selective Pd-Catalyzed C(sp3)-H Arylation of Heteroaromatic Ketones [PDF]

open access: yes, 2021
A ligand-controlled site-selective C(sp; 3; )-H arylation of heteroaromatic ketones has been developed using Pd catalysis. The reaction occurred selectively at the α- or β-position of the ketone side-chain.
Kudashev, Anton, Baudoin, Olivier
core   +1 more source

Regioselective Direct C−H Bond (Hetero)arylation of Thiazoles Enabled by a Novel Iminopyridine-Based α‐Diimine Nickel(II) Complex Evaluated by DFT Studies. [PDF]

open access: yes, 2023
Direct C−H bond arylation is a highly effective method for synthesizing arylated heteroaromatics. This method reduces synthetic steps and minimizes the formation of impurities. We report an air and moisture-stable iminopyridine-based α-diimine nickel (II)
John , Michael O. Cue   +9 more
core   +2 more sources

4’-Methyl-2’-(quinolin-8-ylcarbamoyl)-biphenyl-4-carboxylic Acid Ethyl Ester

open access: yesMolbank, 2020
In this short note communication, we report the synthesis of a novel amide 4’-methyl-2’-(quinolin-8-ylcarbamoyl)-biphenyl-4-carboxylic acid ethyl ester by the Ru-catalyzed C(sp2)-H bond arylation reaction.
Hamad H. Al Mamari, Anfal Al Hasani
doaj   +1 more source

Highly Regioselective Arylation of sp3 C−H Bonds Catalyzed by Palladium Acetate

open access: yes, 2016
A new palladium-catalyzed arylation process based on C−H activation has been developed. The utilization of pyridine-containing directing groups allows the β-arylation of carboxylic acid derivatives and γ-arylation of amine derivatives.
Vladimir G. Zaitsev (2669500)   +2 more
core   +3 more sources

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