Results 21 to 30 of about 2,786 (190)

Achieving Diverse Functionalizations of Electron-Deficient Aryl Halides via Carbonate-Mediated Electron-Donor-Acceptor Complexes. [PDF]

open access: yesEuropean J Org Chem
We report a simple and practical electron donor–acceptor complex‐mediated method that employs inexpensive carbonate bases to activate electron‐deficient aryl iodides and bromides. The protocol enables diverse transformations, including arylation, dehalogenation, deuteration, chalcogenation, and borylation, providing a versatile platform for the ...
Sachidanandan K   +3 more
europepmc   +2 more sources

Group-assisted purification (GAP) chemistry for the synthesis of Velcade via asymmetric borylation of N-phosphinylimines

open access: yesBeilstein Journal of Organic Chemistry, 2014
A new approach to the anticancer drug Velcade was developed by performing asymmetric borylation of an imine anchored with a chiral N-phosphinyl auxiliary.
Jian-bo Xie   +4 more
doaj   +1 more source

Updated Progress of the Copper-Catalyzed Borylative Functionalization of Unsaturated Molecules

open access: yesMolecules, 2023
Borylation has become a powerful method to synthesize organoboranes as versatile building blocks in organic synthesis, medicinal chemistry, and materials science.
Bingru Li   +5 more
doaj   +1 more source

Palladium-catalyzed solid-state borylation of aryl halides using mechanochemistry

open access: yesBeilstein Journal of Organic Chemistry, 2022
This study describes the solid-state palladium-catalyzed cross-coupling between aryl halides and bis(pinacolato)diboron using ball milling. The reactions were completed within 10 min for most aryl halides to afford a variety of synthetically useful ...
Koji Kubota   +4 more
doaj   +1 more source

Iron-Catalysed C(sp2)-H Borylation Enabled by Carboxylate Activation

open access: yesMolecules, 2020
Arene C(sp2)-H bond borylation reactions provide rapid and efficient routes to synthetically versatile boronic esters. While iridium catalysts are well established for this reaction, the discovery and development of methods using Earth-abundant ...
Luke Britton   +3 more
doaj   +1 more source

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

open access: yesAngewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera   +2 more
wiley   +2 more sources

Unsymmetrical Diboron Reagents: Application in Borylation Reactions of Unsaturated Bonds

open access: yesMolecules, 2019
In the past decades, borylation reactions have received extensive research interest and have developed into effective tools in the synthesis of versatile organoboron compounds. Boranes and symmetrical diboron compounds are commonly utilized as borylating
Siyi Ding, Liang Xu, Zongcheng Miao
doaj   +1 more source

Substrate‐Controlled Enantiodivergence in Ni‐Catalyzed Access to Phosphorylated Oxindoles With Quaternary Stereocenters

open access: yesAngewandte Chemie, EarlyView.
An efficient, enantiodivergent synthesis of phosphorylated oxindoles with quaternary stereocenters is achieved via a nickel‐catalyzed intermolecular Heck‐phosphorylation cascade. Employing a single chiral catalyst, either product enantiomer is selectively accessed simply by changing the alkene leaving group. DFT calculations trace this stereodivergence
Haimeng Zhu   +4 more
wiley   +2 more sources

Preparation of Synthetic and Natural Derivatives of Flavonoids Using Suzuki–Miyaura Cross-Coupling Reaction

open access: yesMolecules, 2022
Herein, we report the use of the Suzuki–Miyaura cross-coupling reaction for the preparation of a library of synthetic derivatives of flavonoids for biological activity assays.
Martina Hurtová   +5 more
doaj   +1 more source

Iterative Synthesis of Pyrene–Coronene Molecular Graphene Nanoribbons

open access: yesAngewandte Chemie, EarlyView.
An iterative approach delivers a new family of undoped, cove‐edged graphene nanoribbons with lengths up to 9.1 nm that exhibit both molar absorptivity and fluorescence brightness values on the order of 105 M−1 cm−1 and an intrinsic charge‐carrier mobility of 475 ± 32 cm2 V−1 s−1.
Miguel A. Medel   +6 more
wiley   +2 more sources

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