Photocatalytic Late-Stage C–H Functionalization

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(8), P. 4237 - 4352

Published: Jan. 24, 2023

The emergence of modern photocatalysis, characterized by mildness and selectivity, has significantly spurred innovative late-stage C–H functionalization approaches that make use low energy photons as a controllable source. Compared to traditional strategies, photocatalysis paves the way toward complementary and/or previously unattainable regio- chemoselectivities. Merging compelling benefits with workflow offers potentially unmatched arsenal tackle drug development campaigns beyond. This Review highlights photocatalytic strategies small-molecule drugs, agrochemicals, natural products, classified according targeted bond newly formed one. Emphasis is devoted identifying, describing, comparing main mechanistic scenarios. draws critical comparison between established ionic chemistry photocatalyzed radical-based manifolds. aims establish current state-of-the-art illustrate key unsolved challenges be addressed in future. authors aim introduce general readership functionalization, specialist practitioners evaluation methodologies, potential for improvement, future uncharted directions.

Language: Английский

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Enantioselective Radical Reactions Using Chiral Catalysts

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(6), P. 5842 - 5976

Published: Jan. 24, 2022

Benefiting from the impressive increase in fundamental knowledge, last 20 years have shown a continuous burst of new ideas and consequently plethora catalytic methods for enantioselective radical reactions. This review aims to provide complete survey progress achieved over this latter period. The first part focuses on use chiral organocatalysts, these include catalysts covalently linked substrate those that interact with by weaker interactions like hydrogen bonds. second is devoted transition-metal redox catalysis which organized according increasing atomic number first-row transition metals (Ti, Cr, Fe, Mn, Co, Ni, Cu). Bioinspired manganese- iron-mediated hydroxylations oxidations are also discussed. A specific section dedicated reactivity Ru, Rh, Ir complexes as Lewis acids special focus at metal. Absorption photons result different events such energy transfer, single-electron hydrogen-atom transfer facilitating formation radicals. Organocatalysis has been successfully combined photocatalysts, opened pathways enlarging precursors available. merger photocatalysis organo- or metalla-photocatalysis brought novelty allowed discovery large original transformations. enzyme-catalyzed reactions involving intermediates largely benefit visible-light irradiation included review. provides comprehensive inventory goal detailing reaction mechanisms involved transformations any nonspecialist could find their own creativity invent yet unknown applications.

Language: Английский

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A Review on Photothermal Conversion of Solar Energy with Nanomaterials and Nanostructures: From Fundamentals to Applications

Advanced Sustainable Systems, Journal Year: 2022, Volume and Issue: 6(9)

Published: July 6, 2022

Abstract Solar energy is a green, sustainable, and de facto inexhaustible source for mankind. The conversion of solar into other forms has attracted extensive research interest due to climate change the crisis. Among all technologies, photothermal exhibits unique advantages when applied water purification, desalination, high‐temperature heterogeneous catalysis, anti‐bacterial treatments, deicing. In this review, various mechanisms based on different heat release are summarized some latest examples presented. addition, necessary prerequisites solar‐driven materials toward their practical applications also discussed. Further, advances in discussed, focusing types applications. Finally, summary given challenges opportunities This review aims give comprehensive understanding emerging technologies effect, especially by using nanomaterials nanostructures.

Language: Английский

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Supramolecular Coordination Cages for Artificial Photosynthesis and Synthetic Photocatalysis

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(9), P. 5225 - 5261

Published: Jan. 20, 2023

Because sunlight is the most abundant energy source on earth, it has huge potential for practical applications ranging from sustainable supply to light driven chemistry. From a chemical perspective, excited states generated by make thermodynamically uphill reactions possible, which forms basis storage into fuels. In addition, with light, open-shell species can be open up new reaction pathways in organic synthesis. Crucial are photosensitizers, absorb and transfer substrates various mechanisms, processes that highly depend distance between molecules involved. Supramolecular coordination cages well studied synthetically accessible vessels single cavities guest binding, ensuring close proximity of different components. Due high modularity their size, shape, nature metal centers ligands, ideal platforms exploit preorganization photocatalysis. Herein we focus application supramolecular photocatalysis artificial photosynthesis photo(redox) catalysis. Finally, brief overview immobilization strategies provides tools implementing devices. This review inspiration future design photocatalytic host-guest systems producing solar fuels complex molecules.

Language: Английский

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A general arene C–H functionalization strategy via electron donor–acceptor complex photoactivation

Nature Chemistry, Journal Year: 2022, Volume and Issue: 15(1), P. 43 - 52

Published: Dec. 5, 2022

Language: Английский

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Benzothiazole derivatives-based supramolecular assemblies as efficient corrosion inhibitors for copper in artificial seawater: Formation, interfacial release and protective mechanisms

Corrosion Science, Journal Year: 2023, Volume and Issue: 212, P. 110957 - 110957

Published: Jan. 2, 2023

Language: Английский

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Energy transfer photocatalysis: exciting modes of reactivity

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(3), P. 1068 - 1089

Published: Jan. 1, 2024

Leveraging light energy to expose the ‘dark’ reactive states describes whole essence of triplet–triplet transfer. This offers an impressive opportunity conduct a multitude diverse reactions and access sought-after molecular motifs.

Language: Английский

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Enantioselective [2+2]-cycloadditions with triplet photoenzymes

Nature, Journal Year: 2022, Volume and Issue: 611(7937), P. 715 - 720

Published: Sept. 21, 2022

Language: Английский

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Recent advancements in photothermal anti-icing/deicing materials

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 469, P. 143924 - 143924

Published: June 3, 2023

Language: Английский

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Metal Stereogenicity in Asymmetric Transition Metal Catalysis

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(8), P. 4764 - 4794

Published: March 29, 2023

Chiral transition metal catalysts represent a powerful and economic tool for implementing stereocenters in organic synthesis, with the center providing strong chemical activation upon its interaction substrates or reagents, while overall chirality of complex achieves desired stereoselectivity. Often, chiral topology implements stereogenic center, which is then involved origin asymmetric induction. This review provides comprehensive survey reported formally constitutes stereocenter. A goes along an complex, regardless whether ligands are achiral. Implications catalyst design mechanism induction discussed half-sandwich, tetracoordinated, pentacoordinated, hexacoordinated complexes containing center. The distinguishes between originating from coordination to those solely composed optically inactive (achiral rapidly interconverting enantiomers) prior complexation (dubbed “chiral-at-metal” catalysts).

Language: Английский

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