Selective Ni(I)/Ni(III) Process for Consecutive Geminal C(sp3)–C(sp2) Bond Formation DOI Creative Commons
Xuejiao Li, Yu Gan, Yiyang Wang

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Ni-catalyzed multicomponent cross-couplings have emerged as a powerful strategy for efficiently constructing complex molecular architectures from diverse array of organic halides. Despite its potential, selectively forming multiple chemical bonds in single operation, particularly the realm cross-electrophile coupling catalysis, remains significant challenge. In this study, we developed consecutive open-shell reductive Ni enabling formation two geminal C(sp

Language: Английский

Overview of Recent Scale-Ups in Organic Electrosynthesis (2000–2023) DOI
Dan Lehnherr, Longrui Chen

Organic Process Research & Development, Journal Year: 2024, Volume and Issue: 28(2), P. 338 - 366

Published: Jan. 18, 2024

This review summarizes examples of organic electrosynthesis from the peer-reviewed literature 2000 to 2023 that have been conducted on scales 20 g or above. A significant portion these were a ≤100 scale, while detailed reports kilogram-scale remain scarce in pharmaceutical industry. In addition chemical transformation, this also highlights type reactor used and projected productivity metric as ways compare different reports. The selected scale-ups described herein illustrate remaining challenges currently preventing routine use large-scale

Language: Английский

Citations

43

Computational Methods Enable the Prediction of Improved Catalysts for Nickel-Catalyzed Cross-Electrophile Coupling DOI
Michelle E. Akana,

Sergei Tcyrulnikov,

Brett D. Akana-Schneider

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(5), P. 3043 - 3051

Published: Jan. 26, 2024

Cross-electrophile coupling has emerged as an attractive and efficient method for the synthesis of C(sp2)–C(sp3) bonds. These reactions are most often catalyzed by nickel complexes nitrogenous ligands, especially 2,2′-bipyridines. Precise prediction, selection, design optimal ligands remains challenging, despite significant increases in reaction scope mechanistic understanding. Molecular parameterization statistical modeling provide a path to development improved bipyridine that will enhance selectivity existing broaden electrophiles can be coupled. Herein, we describe generation computational ligand library, correlation observed outcomes with features silico Ni-catalyzed cross-electrophile coupling. The new nitrogen-substituted display 5-fold increase product formation versus homodimerization when compared current state art. This yield was general several couplings, including challenging aryl chloride N-alkylpyridinium salt.

Language: Английский

Citations

18

Scalable Flow Electrosynthesis of Iminophosphoranes DOI
Dan Lehnherr, Longrui Chen, François Lévesque

et al.

Organic Process Research & Development, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

A scalable electrochemical process to synthesize iminophosphorane ligands is reported. The application of these iminophosphoranes was recently reported in Ni-catalyzed cross-electrophile and C–N cross-couplings. use parallel plate flow reactors enables the synthesis on a multigram scale, with selected examples up 0.6 kg scale. Direct crystallization from end reaction mixture for provides facile isolation processes. This article also details improvements our capabilities across scales, including addressing material compatibility issues, increasing accessible range rates, integration analytical technology tools.

Language: Английский

Citations

2

Adoption of Electrochemistry within the Pharmaceutical Industry: Insights from an Industry-Wide Survey DOI
Antonio C. Ferretti, Benjamin Cohen, Lin Deng

et al.

Organic Process Research & Development, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Language: Английский

Citations

2

Cross-Electrophile Coupling: Principles, Methods, and Applications in Synthesis DOI Creative Commons
Lauren E. Ehehalt, Omar M. Beleh, Isabella C. Priest

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 26, 2024

Cross-electrophile coupling (XEC), defined by us as the cross-coupling of two different σ-electrophiles that is driven catalyst reduction, has seen rapid progression in recent years. As such, this review aims to summarize field from its beginnings up until mid-2023 and provide comprehensive coverage on synthetic methods current state mechanistic understanding. Chapters are split type bond formed, which include C(sp

Language: Английский

Citations

13

Electrocatalytic Formal C(sp2)−H Alkylations via Nickel‐Catalyzed Cross‐Electrophile Coupling with Versatile Arylsulfonium Salts DOI Creative Commons
Takuya Michiyuki, Simon L. Homölle, Neeraj Kumar Pandit

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(29)

Published: May 2, 2024

Producing sp

Language: Английский

Citations

11

Electrochemical Nickel-Catalyzed C(sp2)-H Functionalization of Tropones with Aldehydes DOI Creative Commons
Andrea Brunetti, Sofia Kiriakidi,

Mauro Garbini

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 3184 - 3190

Published: Feb. 6, 2025

A direct electroreductive functionalization of tropones employing aldehydes as alkylating agents is reported. This C(sp2)-H process leverages the mediation electroactive nickel complexes, enabling a wide range both native and substituted (44 examples) to be alkylated selectively at α-position in high yields (up 90%). Combined electrochemical, spectroelectrochemical, computational analyses disclosed whole mechanistic pathway revealed key role played by reduced Ni complexes activating tropone core toward condensation with aldehydes.

Language: Английский

Citations

1

Zirconaaziridine-Mediated Ni-Catalyzed Diastereoselective C(sp2)-Glycosylation DOI
Yu Gan,

Jun‐Feng Zhou,

Xuejiao Li

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(24), P. 16753 - 16763

Published: June 11, 2024

In the realm of organic synthesis, catalytic and stereoselective formation C-glycosidic bonds is a pivotal process, bridging carbohydrates with aglycones. However, inherent chirality saccharide scaffold often has substantial impact on stereoinduction imposed by chiral ligand. this study, we have established an unprecedented zirconaaziridine-mediated asymmetric nickel catalysis, enabling diastereoselective coupling bench-stable glycosyl phosphates range (hetero)aromatic glycal iodides as feasible electrophiles. Our developed method showcases broad scope high tolerance for various functional groups. More importantly, precise stereocontrol toward both anomeric configurations forming C(sp2)-glycosides can be realized simply utilizing popular bioxazoline (biOx) ligands in reductive Ni catalysis. Regarding operating mechanism, experimental computational studies support occurrence redox transmetalation leading to transient, bimetallic Ni–Zr species that acts potent efficient single-electron reductant process.

Language: Английский

Citations

8

Cross‐selective Deoxygenative Coupling of Aliphatic Alcohols: Installation of Methyl Groups including Isotopic Labels by Nickel Catalysis DOI Creative Commons
Patricia C. Lin,

Chloe D. Wong,

Elizabeth R. Jarvo

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(24)

Published: April 12, 2024

Abstract Nickel‐catalyzed cross‐electrophile coupling reactions of two aliphatic alcohol derivatives remain a challenge. Herein, we report nickel‐catalyzed reductive methylation reaction mesylates with methyl tosylate. This provides straightforward access to compounds bearing groups from alkyl derivatives. Isotopically labelled substrates and reagents can be employed in the provide perdeuterated 13 C‐labelled products. transformation achieved by employing stoichiometric Mn reductant or electrochemically. Additionally, mechanistic experiments show that iodides are key intermediates which undergo stereoablative via radical intermediates.

Language: Английский

Citations

4

C−P Bond Formation by Nickel or Cobalt Catalyzed Coupling Reactions DOI Open Access
Anju Modi, Corinne Gosmini, Audrey Auffrant

et al.

Chemistry - An Asian Journal, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract This review discloses nickel‐ and cobalt‐catalyzed coupling reactions that allow C−P bond formation. Activation of C−halide bonds to form phosphonium, pentavalent phosphorus, or trivalent phosphorous compounds has been reported with both metals. However, the conversion C−O ((activated) ethers, carbonates, acetates) into ones only described Ni. Similarly, there are more examples C−Y (Y=C, S, N, B) activations catalyzed by Ni than Co. Nevertheless, cross‐dehydrogenative reaction between a P−H reagent C−H often cobalt nickel. In addition, for metals, electrolytic photocatalytic processes have shown produce variety containing molecules. aims provide an overview potential metals formation highlight remaining challenges.

Language: Английский

Citations

0