Direct Site-Selective Arylation of Enamides via a Decarboxylative Cross-Coupling Reaction

2013 ◽  
Vol 15 (4) ◽  
pp. 816-819 ◽  
Author(s):  
Nicolas Gigant ◽  
Laëtitia Chausset-Boissarie ◽  
Isabelle Gillaizeau
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction ◽  
Site Selective

ChemInform Abstract: Direct Site-Selective Arylation of Enamides via a Decarboxylative Cross-Coupling Reaction.

ChemInform ◽  
2013 ◽  
Vol 44 (26) ◽  
pp. no-no
Author(s):  
Nicolas Gigant ◽  
Laetitia Chausset-Boissarie ◽  
Isabelle Gillaizeau
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction ◽  
Site Selective

Synthesis of functionalized para- and meta-terphenyls based on site-selective Suzuki cross-coupling reactions of bis(triflates) of methyl 2,5-dihydroxybenzoate and methyl 2,4-dihydroxybenzoate

2013 ◽  
Vol 91 (11) ◽  
pp. 1048-1058 ◽  
Author(s):  
Muhammad Nawaz ◽  
Ihsan Ullah ◽  
Obaid-ur-Rahman Abid ◽  
Asad Ali ◽  
Tamás Patonay ◽  
...  
Keyword(s):  
Carbon Atom ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Cross Coupling Reaction ◽  
Site Selectivity ◽  
Good Site ◽  
Site Selective

The palladium(0)-catalyzed Suzuki cross-coupling reaction of the bis(triflates) of methyl 2,5-dihydroxybenzoate and methyl 2,4-dihydroxybenzoate afforded para- and meta-terphenyls, respectively. The reactions proceeded with very good site selectivity in favor of the sterically less hindered carbon atom.

scholarly journals Heterogeneous Suzuki–Miyaura coupling of heteroaryl ester via chemoselective C(acyl)–O bond activation

RSC Advances ◽  
2019 ◽  
Vol 9 (30) ◽  
pp. 17266-17272 ◽  
Author(s):  
Hongpeng Ma ◽  
Chaolumen Bai ◽  
Yong-Sheng Bao
Keyword(s):  
Bond Activation ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Palladium Nanoparticle ◽  
Arylboronic Acids ◽  
Cross Coupling Reaction ◽  
Supported Palladium ◽  
A Site ◽  
Site Selective

A site-selective supported palladium nanoparticle catalyzed Suzuki–Miyaura cross-coupling reaction with heteroaryl esters and arylboronic acids as coupling partners was developed.

Ferromagnetic Chain Based on Verdazyl-Nitroxide Diradical

2020 ◽  
Author(s):  
Evgeny Tretyakov ◽  
Svetlana Zhivetyeva ◽  
Pavel Petunin ◽  
Dmitry Gorbunov ◽  
Nina Gritsan ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Ferromagnetic Coupling ◽  
Nitronyl Nitroxide ◽  
Triplet Ground State ◽  
One Dimensional ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed ◽  
Ferromagnetic Chain ◽  
High Yields

<p>Verdazyl-nitroxide diradicals were synthesized using the palladium-catalyzed cross-coupling reaction of the corresponding iodoverdazyls with a nitronyl nitroxide-2-ide gold(I) complex with high yields (up to 82%). The synthesized diradicals were found to be highly thermally stable and have a singlet (D<i>E</i><sub>ST</sub> » -64 cm<sup>–1</sup>) or triplet ground state (D<i>E</i><sub>ST</sub> ³ 25 and 100 cm<sup>–1</sup>), depending on which canonical hydrocarbon diradical type they belong to. Upon crystallization, triplet diradicals form unique one-dimensional (1D) spin <i>S</i> = 1 chains of organic diradicals with intrachain ferromagnetic coupling of <i>J</i>′/<i>k</i><sub>B</sub> from 3 to 6 K.</p>

An Iron-Based Catalyst Enables The Enantioconvergent Synthesis of Chiral 1,1-Diarylalkanes Through a Suzuki-Miyaura Cross-Coupling Reaction

2020 ◽  
Author(s):  
Chet Tyrol ◽  
Nang Yone ◽  
Connor Gallin ◽  
Jeffery Byers
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Radical Intermediates ◽  
Cross Coupling Reactions ◽  
Cross Coupling Reaction ◽  
Boronic Esters ◽  
Carbon Centered Radical ◽  
Iron Based ◽  
High Yields

By using an iron-based catalyst, access to enantioenriched 1,1-diarylakanes was enabled through an enantioselective Suzuki-Miyaura crosscoupling reaction. The combination of a chiral cyanobis(oxazoline) ligand framework and 1,3,5-trimethoxybenzene additive were essential to afford high yields and enantioselectivities in cross-coupling reactions between unactivated aryl boronic esters and a variety of benzylic chlorides, including challenging ortho-substituted benzylic chloride substrates. Mechanistic investigations implicate a stereoconvergent pathway involving carbon-centered radical intermediates.

Ni(0)-Catalyzed α-Allylic Alkylation of Regular Ketones with 1,3-Dienes under pH and Redox-neutral Conditions

2019 ◽  
Author(s):  
Tiantian Chen ◽  
Yang Yang ◽  
Liyu Xie ◽  
Haijian Yang ◽  
Guangbin Dong ◽  
...  
Keyword(s):  
Oxidative Addition ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Dual Role ◽  
Allylic Alkylation ◽  
Cross Coupling Reaction ◽  
Neutral Conditions

<p>We report a Ni(0)-catalyzed cross coupling reaction between simple ketones and 1,3-dienes. A variety of a-allylic alkylation products were formed in an 1,2-addition manner with excellent regioselectivity. Water was found to significantly accelerate this transformation. A HO-Ni-H species generated from oxidative addition of Ni(0) to H<sub>2</sub>O is proposed to play a “dual role” in activating both the ketone and the diene substrate.</p>

Immobilizing biogenically synthesized palladium nanoparticles on cellulose support as a green and sustainable dip catalyst for cross-coupling reaction

Cellulose ◽  
2020 ◽  
Vol 27 (6) ◽  
pp. 3335-3357 ◽  
Author(s):  
Manjunatha Kempasiddaiah ◽  
Vishal Kandathil ◽  
Ramesh B. Dateer ◽  
B. S. Sasidhar ◽  
Shivaputra A. Patil ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction
Sign in / Sign up

Export Citation Format

Share Document