ChemInform Abstract: Synthesis of Fluorinated Aryl Ethers via Selective C-F Functionalization with Polyfluorobenzenes and Carbonates under Mild Conditions.

ChemInform ◽  
2015 ◽  
Vol 46 (46) ◽  
pp. no-no
Author(s):  
Guanghui Yang ◽  
Zhiqun Yu ◽  
Xinpeng Jiang ◽  
Chuanming Yu
Keyword(s):  
Mild Conditions ◽  
Aryl Ethers

Efficient hydrogenolysis of aryl ethers over Ce-MOF supported Pd NPs under mild conditions: mechanistic insight using density functional theoretical calculations

2020 ◽  
Vol 10 (20) ◽  
pp. 6892-6901
Author(s):  
Ashish Kumar Kar ◽  
Surinder Pal Kaur ◽  
T. J. Dhilip Kumar ◽  
Rajendra Srivastava
Keyword(s):  
Catalytic Activity ◽  
Adsorption Energy ◽  
Density Functional ◽  
Theoretical Calculations ◽  
Desorption Energy ◽  
Mild Conditions ◽  
Mechanistic Insight ◽  
Aryl Ethers ◽  
Benzyl Phenyl Ether ◽  
Supported Pd

The significant Pd0 content and optimum bonding of the reactant & product (higher adsorption energy of benzyl phenyl ether and lower desorption energy for phenol) are responsible for the exceptional catalytic activity of Pd/Ce-MOF.

Synthesis of fluorinated aryl ethers via selective C–F functionalization with polyfluorobenzenes and carbonates under mild conditions

2015 ◽  
Vol 56 (32) ◽  
pp. 4689-4693 ◽  
Author(s):  
Guanghui Yang ◽  
Zhiqun Yu ◽  
Xinpeng Jiang ◽  
Chuanming Yu
Keyword(s):  
Mild Conditions ◽  
Aryl Ethers

From Anilines to Aryl Ethers: A Facile, Efficient, and Versatile Synthetic Method Employing Mild Conditions

2018 ◽  
Vol 57 (14) ◽  
pp. 3641-3645 ◽  
Author(s):  
Dong-Yu Wang ◽  
Ze-Kun Yang ◽  
Chao Wang ◽  
Ao Zhang ◽  
Masanobu Uchiyama
Keyword(s):  
Synthetic Method ◽  
Mild Conditions ◽  
Aryl Ethers

Selective aromatic chlorination of activated arenes with sodium chlorite, (salen)manganese(III) complex, and alumina in dichloromethane

1997 ◽  
Vol 75 (12) ◽  
pp. 1905-1912 ◽  
Author(s):  
Masao Hirano ◽  
Shigetaka Yakabe ◽  
Hiroyuki Monobe ◽  
Takashi Morimoto
Keyword(s):  
Biphasic System ◽  
Sodium Chlorite ◽  
Alkyl Aryl ◽  
Mild Conditions ◽  
Aryl Ethers ◽  
Phenyl Ethers ◽  
Alkyl Aryl Ethers

The reaction of alkyl phenyl ethers with sodium chlorite in dichloromethane in the presence of a (salen)manganese(III) complex and alumina preloaded with a small amount of water afforded monochlorination products with unusually high para selectivities under mild conditions. The NaClO2-based biphasic system can also be successfully used for the regioselective monochlorination of substituted anisoles and polymethoxybenzenes. Keywords: aromatic chlorination, alkyl aryl ethers, sodium chlorite, (salen)manganese(III) complex, alumina.

Non-Plasmonic Ni Nanoparticles Catalyzed Visible Light Selective Hydrogenolysis of Aryl Ethers in Lignin under Mild Conditions

2021 ◽  
Author(s):  
Peifeng Li ◽  
Yixuan Ouyang ◽  
Gang Xiao ◽  
Yilin Zhao ◽  
Sarina Sarina ◽  
...  
Keyword(s):  
Visible Light ◽  
Chemical Conversion ◽  
Ni Nanoparticles ◽  
Group Viii ◽  
Mild Conditions ◽  
Selective Hydrogenolysis ◽  
Aryl Ethers

Light-driven catalysis on catalytically versatile group VIII metals, which has been widely used in thermal-catalysis, holds great potential in solar-to-chemical conversion. We report a novel photocatalysis process for the selective...

Etherification of phenols by amines via transient diazonium intermediates

2020 ◽  
Vol 98 (9) ◽  
pp. 480-484 ◽  
Author(s):  
Guillaume Reynard ◽  
Hugo Mayrand ◽  
Hélène Lebel
Keyword(s):  
Alkyl Aryl ◽  
Mild Conditions ◽  
Alkyl Groups ◽  
Aryl Ethers ◽  
Tertiary Alkyl ◽  
Alkyl Aryl Ethers

In this paper, the synthesis of alkyl aryl ethers from electron poor phenols and amines, using 1,3-propanedinitrite, is described. Due to the mild conditions, functionalized primary, secondary, and tertiary alkyl groups were successfully introduced, denoting a highly tolerant process that allows for unprotected alcohols and acetals. The reaction is thought to proceed through the formation of a diazonium intermediate that undergoes subsequent SN2 or SN1 reactions.

From Anilines to Aryl Ethers: A Facile, Efficient, and Versatile Synthetic Method Employing Mild Conditions

2018 ◽  
Vol 130 (14) ◽  
pp. 3703-3707 ◽  
Author(s):  
Dong-Yu Wang ◽  
Ze-Kun Yang ◽  
Chao Wang ◽  
Ao Zhang ◽  
Masanobu Uchiyama
Keyword(s):  
Synthetic Method ◽  
Mild Conditions ◽  
Aryl Ethers

The Diorgano Dichalcogenides Addition to Benzyne under Mild Conditions

2007 ◽  
Author(s):  
Fabiano Toledo ◽  
Henrique Marques ◽  
João Comasseto ◽  
Cristiano Raminelli
Keyword(s):  
Mild Conditions

Pt-Pd Nanoalloy for the Unprecedented Activation of Carbon-Fluorine Bond at Low Temperature

2019 ◽  
Author(s):  
Raghu Nath Dhital ◽  
keigo nomura ◽  
Yoshinori Sato ◽  
Setsiri Haesuwannakij ◽  
Masahiro Ehara ◽  
...  
Keyword(s):  
Activation Energy ◽  
Low Temperature ◽  
Dft Calculations ◽  
Bond Activation ◽  
Mild Conditions ◽  
Selective Transformation ◽  
Rate Determining Step ◽  
Highly Active ◽  
Harsh Conditions ◽  
Reaction Profile

Carbon-Fluorine (C-F) bonds are considered the most inert organic functionality and their selective transformation under mild conditions remains challenging. Herein, we report a highly active Pt-Pd nanoalloy as a robust catalyst for the transformation of C-F bonds into C-H bonds at low temperature, a reaction that often required harsh conditions. The alloying of Pt with Pd is crucial to activate C-F bond. The reaction profile kinetics revealed that the major source of hydrogen in the defluorinated product is the alcoholic proton of 2-propanol, and the rate-determining step is the reduction of the metal upon transfer of the <i>beta</i>-H from 2-propanol. DFT calculations elucidated that the key step is the selective oxidative addition of the O-H bond of 2-propanol to a Pd center prior to C-F bond activation at a Pt site, which crucially reduces the activation energy of the C-F bond. Therefore, both Pt and Pd work independently but synergistically to promote the overall reaction

Double Ring-Closing Approach for the Synthesis of 2,3,6,7-Substituted Anthracene Derivatives

2020 ◽  
Author(s):  
Birgit Meindl ◽  
Katharina Pfennigbauer ◽  
Berthold Stöger ◽  
Martin Heeney ◽  
Florian Glöcklhofer
Keyword(s):  
Wittig Reaction ◽  
Condensation Reaction ◽  
Synthetic Methods ◽  
Anthracene Derivative ◽  
Double Ring ◽  
Mild Conditions ◽  
Wide Range ◽  
Anthracene Derivatives

Anthracene derivatives have been used for a wide range of applications and many different synthetic methods for their preparation have been developed. However, despite continued synthetic efforts, introducing substituents in some positions has remained difficult. Here we present a method for the synthesis of 2,3,6,7-substituted anthracene derivatives, one of the most challenging anthracene substitution patterns to obtain. The method is exemplified by the preparation of 2,3,6,7-anthracenetetracarbonitrile and employs a newly developed, stable protected 1,2,4,5-benzenetetracarbaldehyde as the precursor. The precursor can be obtained in two scalable synthetic steps from 2,5-dibromoterephthalaldehyde and is converted into the anthracene derivative by a double intermolecular Wittig reaction under very mild conditions followed by a deprotection and intramolecular double ring-closing condensation reaction. Further modification of the precursor is expected to enable the introduction of additional substituents in other positions and may even enable the synthesis of fully substituted anthracene derivatives by the presented approach.<br>

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