Journal ArticleDOI
Copper-Catalyzed Aerobic Oxidative C ? H Functionalizations: Trends and Mechanistic Insights
TLDR
This work has reported several recently reported Cu-catalyzed C-H oxidation reactions that feature substrates that are electron-deficient or appear unlikely to undergo single-electron transfer to copper(II), and evidence has been obtained for the involvement of organocopper(III) intermediates in the reaction mechanism.Abstract:
The selective oxidation of C-H bonds and the use of O(2) as a stoichiometric oxidant represent two prominent challenges in organic chemistry. Copper(II) is a versatile oxidant, capable of promoting a wide range of oxidative coupling reactions initiated by single-electron transfer (SET) from electron-rich organic molecules. Many of these reactions can be rendered catalytic in Cu by employing molecular oxygen as a stoichiometric oxidant to regenerate the active copper(II) catalyst. Meanwhile, numerous other recently reported Cu-catalyzed C-H oxidation reactions feature substrates that are electron-deficient or appear unlikely to undergo single-electron transfer to copper(II). In some of these cases, evidence has been obtained for the involvement of organocopper(III) intermediates in the reaction mechanism. Organometallic C-H oxidation reactions of this type represent important new opportunities for the field of Cu-catalyzed aerobic oxidations.read more
Citations
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Journal ArticleDOI
Direct Synthesis of Fluorescent Oxazolo-phenoxazines by Copper-Catalyzed/Hypervalent Iodine(III)-Mediated Dimerization/Cyclization of 2-Benzylamino-phenols
TL;DR: In this article , a cyclization reaction of 2-benzylamino-phenols for the direct synthesis of the oxazolo-phenoxazine skeleton is reported, where the reaction occurs under copper catalysis in the presence of hypervalent iodine(III), giving selectively the 5H-oxazolo[4,5-b] compounds.
Book ChapterDOI
Mechanistic Pathways Toward the Synthesis of Heterocycles Under Cross-Dehydrogenative Conditions
Ahmad A. Almasalma,Esteban Mejía +1 more
TL;DR: In this paper, the authors summarized the most recent and relevant examples under the aforementioned categories, focusing especially on those presenting the most compelling and better understood mechanisms, and presented a more detailed overview of the most interesting and relevant mechanisms.
Journal ArticleDOI
Time-Dependent Self-Assembly of Copper(II) Coordination Polymers and Tetranuclear Rings: Catalysts for Oxidative Functionalization of Saturated Hydrocarbons.
Inês F. M. Costa,Marina V. Kirillova,Vânia André,Tiago A. Fernandes,Alexander M. Kirillov,Alexander M. Kirillov +5 more
TL;DR: In this paper, the authors describe a time-dependent self-assembly generation of new copper(II) coordination compounds from an aqueous-medium reaction mixture composed of copper nitrate, H3bes biobuffer (N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid), ammonium hydroxide, and benzenecarboxylic acid, namely, 4-methoxybenzoic (Hfmba) or 4-chlorobenzoic acid.
Journal ArticleDOI
Cu–ion induced self-polymerization of Cu phthalocyanine to prepare low-cost organic cathode materials for Li-ion batteries with ultra-high voltage and ultra-fast rate capability
TL;DR: In this paper, copper(II) phthalocyanine (CuPc), one of the most frequently used blue pigments, is directly used as a cathode material in lithium ion batteries.
Journal ArticleDOI
Cobalt( ii )-catalyzed benzylic oxidations with potassium persulfate in TFA/TFAA
TL;DR: In this article, a cobalt-catalyzed C(sp3)-H oxygenation reaction to furnish aldehyde was described. But this transformation demonstrated high chemo-selectivity, and tolerated various methylarenes bearing electron-withdrawing substituents.
References
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Journal ArticleDOI
Palladium-Catalyzed Ligand-Directed C−H Functionalization Reactions
TL;DR: This is the first comprehensive review encompassing the large body of work in this field over the past 5 years, and will focus specifically on ligand-directed C–H functionalization reactions catalyzed by palladium.
Journal ArticleDOI
Palladium(II)-catalyzed C-H activation/C-C cross-coupling reactions: versatility and practicality.
TL;DR: A review of palladium-catalyzed coupling of CH bonds with organometallic reagents through a PdII/Pd0 catalytic cycle can be found in this paper.
Journal ArticleDOI
Catalytic dehydrogenative cross-coupling: forming carbon-carbon bonds by oxidizing two carbon-hydrogen bonds
Charles S. Yeung,Vy M. Dong +1 more
Journal ArticleDOI
Multicopper Oxidases and Oxygenases
TL;DR: Copper sites have historically been divided into three classes based on their spectroscopic features, which reflect the geometric and electronic structure of the active site: type 1 or blue copper, type 2 (T2) or normal copper, and type 3 (T3) or coupled binuclear copper centers.
Journal ArticleDOI
Rhodium-Catalyzed C-C Bond Formation via Heteroatom-Directed C-H Bond Activation
TL;DR: This review focuses on Rh-catalyzed methods for C-H bond functionalization, which have seen widespread success over the course of the last decade and are discussed in detail in the accompanying articles in this special issue of Chemical Reviews.
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