Recent application of visible-light induced radicals in C–S bond formation

Srivastava, Vishal; Singh, Pravin Kumar; Srivastava, Arjita; Singh, Praveen P.

doi:10.1039/d0ra03086d

Cited by 70 publications

(16 citation statements)

References 88 publications

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“…To construct the CÀ S bond, photoredox catalysis has caught a great attraction in the past few years due to its simple operation, mild conditions, and exclusion of stoichiometric oxidants. [89] In this context, Wang, Tu, Jiang, and co-workers in 2017, reported an Eosin-Y photocatalyzed arylsulfonylation and bicyclization of 1,7-enynes 125 with sulfinic acids 104 and obtained the corresponding benzo[a]fluoren-5-ones 126 in moderate to good yields (Scheme 39). [90] The optimized conditions revealed that the combination of Eosin-Y as a photocatalyst with K 2 CO 3 as a base delivered the best results.…”

Section: S-centered Radical Additionmentioning

confidence: 99%

Visible Light‐Mediated Manipulation of 1,n‐Enynes in Organic Synthesis

2022

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The 1,n-enynes are potent scaffolds in organic synthesis, providing a state-of-the-art approach for synthesizing various acyclic and carbo-and heterocyclic compounds. Radical cascade cyclization and CÀ H functionalization of 1,n-enynes have gained immense attention in the synthetic community. Significant advancement in this field has been developed over the years, employing harsh and expensive metal catalysts usually associated with intense product purification and unwanted side-products. In this context, the advent of visible light photocatalysis as a mild and efficient approach in the area of 1,nenynes is a welcome step. Herein, we provide an exclusive overview of the recent developments in visible light-assisted manipulation of 1,n-enynes. We have classified the review into 1,3-, 1,4-, 1,5-, 1,6-, 1,7-, and 1,8-enynes, as well as dienyne, and enediyne-based reactions.

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Section: S-centered Radical Additionmentioning

confidence: 99%

Visible Light‐Mediated Manipulation of 1,n‐Enynes in Organic Synthesis

2022

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“…4 Regulations involving the lowering of the sulfur content in hydrocarbon fuels is very important as their burning can lead to emission of sulfur compounds into the atmosphere, causing problems for the environment and human health. 16,17 Conventional methods involving removal of sulfides such as organic solvent absorption, activated carbon adsorption, thermal incineration and catalytic combustion lead to complicated procedures, expensive secondary treatment with the risks of second pollution, fire, hazards and explosion accidents. [18][19][20] Electrochemical desulfurization (ECDS) involving oxidation of sulphur molecules is very simple and economic.…”

Section: Introductionmentioning

confidence: 99%

One pot synthesis and characterization of binary and ternary metal organic frameworks (MOFs) as tri-modal catalysts for thiophene electrooxidation, water splitting and 4-nitrophenol reduction

et al. 2023

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“…Recently, CÀ S cross-coupling reactions catalyzed by heterogeneous catalysts, ligand assisted catalysts, supported catalysts and photocatalysts, were compressively reviewed. [1,10,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] Thus, in this review we have summarized the most recent examples of CÀ S cross coupling catalyzed by well-defined Cu and Ni complexes.…”

Section: Introductionmentioning

confidence: 99%

C−S Cross‐Coupling Reactions Catalyzed by Well‐Defined Copper and Nickel Complexes

2022

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This review presents well-defined copper and nickel complexes that have been used in the formation of CÀ S bonds. The use of Cu or Ni catalysts represent an advantage in comparison with those based on precious metals such as Pd, by being two of the most abundant metals in the earth's crust and thus cheaper. As can be expected the catalytic activity of the different Cu and Ni complexes is strongly dependent on the nature of the ligands used. Thus, multidentate and strong electron-donating ligands are of common use to design highly active species since such ligands are capable to stabilize species in high oxidation states which are key intermediates in the reaction mechanisms of these processes. This being particular true in the case of copper, where Cu(III) produces unstable and reactive species that require an "extra stabilization" during the reaction mechanism. Hence, the reaction mechanisms using copper and nickel complexes as catalysts are also discussed in this paper, including the role of the different ligands during the catalytic processes. Although there is an increasing number of reports on CÀ S cross coupling reactions, due to the relevance of this transformation, they are often difficult to reproduce and not of general use since the actual catalytic species are not identified. Thus, we hope that this report will help to promote the search and synthesis of new ligands for the design of more active welldefined complexes that can be used as catalysts in a more rational manner in the formation of valuable CÀ S bondcontaining species.

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Recent application of visible-light induced radicals in C–S bond formation

Abstract: The sulphur centered radicals, produced from various organic compounds, in high efficiency by single-electron-transfer (SET) oxidation.

Cited by 70 publications

References 88 publications

Visible Light‐Mediated Manipulation of 1,n‐Enynes in Organic Synthesis

Visible Light‐Mediated Manipulation of 1,n‐Enynes in Organic Synthesis

One pot synthesis and characterization of binary and ternary metal organic frameworks (MOFs) as tri-modal catalysts for thiophene electrooxidation, water splitting and 4-nitrophenol reduction

C−S Cross‐Coupling Reactions Catalyzed by Well‐Defined Copper and Nickel Complexes

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