Modern approaches towards the synthesis of geminal difluoroalkyl groups

Organic & Biomolecular Chemistry, Год журнала: 2021, Номер 19(5), С. 947 - 964

Опубликована: Янв. 1, 2021

This review will cover the importance of and most recent approaches toward geminal difluoroalkyl groups using transition metal-mediated, photochemical, organocatalytic, other methods.

Язык: Английский

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Preformed molecular complexes of metals with organoselenium ligands: Syntheses and applications in catalysis

Coordination Chemistry Reviews, Год журнала: 2021, Номер 438, С. 213885 - 213885

Опубликована: Март 27, 2021

Язык: Английский

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Synthesis and perspective of organosulfur chemicals in agrochemicals

Advanced Agrochem, Год журнала: 2022, Номер 2(1), С. 3 - 14

Опубликована: Дек. 21, 2022

As well known, with the increase of world population, improving agricultural production has always been great importance. Due to effective protection against pests or pathogenic bacteria and promoting growth crops, agrochemical holds vital position in modern agriculture. In this field, introducing sulfur moieties into active ingredients improve property pesticides a powerful tool for development agrochemical. Thus, efficient methods construction organosulfur scaffolds existed agrochemicals are highly desirable, which also attract considerable attentions over past few decades. Herein, we provide comprehensive introduction representative synthetic access sulfur-containing molecules frequently found utilization various sulfurizing agents, point out potential direction further development.

Язык: Английский

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Inorganometallics (Transition Metal–Metalloid Complexes) and Catalysis

Chemical Reviews, Год журнала: 2021, Номер 122(3), С. 3996 - 4090

Опубликована: Дек. 30, 2021

While the formation and breaking of transition metal (TM)-carbon bonds plays a pivotal role in catalysis organic compounds, reactivity inorganometallic species, that is, those involving (TM)-metalloid (E) bond, is key importance most conversions metalloid derivatives catalyzed by TM complexes. This Review presents background its development over last 15 years. The results mechanistic studies presented are related to occurrence TM-E TM-H compounds as reactive intermediates catalytic transformations selected metalloids (E = B, Si, Ge, Sn, As, Sb, or Te). illustrates significance inorganometallics following processes: addition metalloid-hydrogen metalloid-metalloid unsaturated compounds; activation functionalization C-H C-X with hydrometalloids bismetalloids; vinylmetalloids, halides, sulfonates; dehydrocoupling hydrometalloids. first on sums up developments methods for synthesis organometalloid their applications advanced part tandem reactions.

Язык: Английский

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Hydroelementation of diynes

Chemical Society Reviews, Год журнала: 2022, Номер 51(3), С. 869 - 994

Опубликована: Янв. 1, 2022

This review highlights the hydroelementation reactions of conjugated and separated diynes, which depending on process conditions, catalytic system, as well type reagents, leads to formation various products: enynes, dienes, allenes, polymers, or cyclic compounds. The presence two triple bonds in diyne structure makes these compounds important reagents but selective product is often difficult owing problems associated with maintaining appropriate reaction regio- stereoselectivity. Herein we this topic gain knowledge reactivity diynes systematise range information relating their use reactions. divided according addition E-H (E = Mg, B, Al, Si, Ge, Sn, N, P, O, S, Se, Te) bond bond(s) diyne, reagent used, formed. Not only are comprehensively discussed, synthetic potential obtained products also presented. majority published research included within review, illustrating limitations processes, intent showcase power transformations synthesis materials chemistry.

Язык: Английский

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Complexes of metals with organotellurium compounds and nanosized metal tellurides for catalysis, electrocatalysis and photocatalysis

Coordination Chemistry Reviews, Год журнала: 2022, Номер 459, С. 214406 - 214406

Опубликована: Фев. 8, 2022

Язык: Английский

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Mechanochemical C−X/C−H Functionalization: An Alternative Strategic Access to Pharmaceuticals

European Journal of Organic Chemistry, Год журнала: 2022, Номер 2022(8)

Опубликована: Янв. 11, 2022

Abstract In the pursuit of clean pharmaceutical production, chemists in medicinal industry require access to new sustainable methodologies reduce and even eliminate pollution, which is mainly produced by overuse organic solvents during chemical synthesis active ingredients (APIs). this context, solvent‐free/less mechanochemical functionalization small molecules has gradually emerged as a powerful strategy for green modification APIs, bioactive compounds, functional materials. review, we present an overview C−X/C−H applications chemistry, involving cross‐coupling, cross‐dehydrogenative coupling, oxidative coupling (via C−H activation pathway), direct radical pathway) key steps preparation APIs compounds.

Язык: Английский

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Task‐Specific Janus Materials in Heterogeneous Catalysis

Angewandte Chemie International Edition, Год журнала: 2022, Номер 61(39)

Опубликована: Июнь 7, 2022

Janus materials are anisotropic nano- and microarchitectures with two different faces consisting of distinguishable or opposite physicochemical properties. In parallel the discovery new methods for fabrication these materials, decisive progress has been made in their application, example, biological science, catalysis, pharmaceuticals, and, more recently, battery technology. This Minireview systematically covers recent significant achievements application task-specific nanomaterials as heterogeneous catalysts various types chemical reactions, including reduction, oxidative desulfurization dye degradation, asymmetric biomass transformation, cascade oxidation, transition-metal-catalyzed cross-coupling electro- photocatalytic well gas-phase reactions. Finally, an outlook on possible future applications is given.

Язык: Английский

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Pd-Catalyzed Cross-Couplings: On the Importance of the Catalyst Quantity Descriptors, mol % and ppm

Organic Process Research & Development, Год журнала: 2022, Номер 26(8), С. 2240 - 2269

Опубликована: Июль 11, 2022

This Review examines parts per million (ppm) palladium concentrations in catalytic cross-coupling reactions and their relationship with mole percentage (mol %). Most studies chemistry have historically focused on the concentration ratio between (pre)catalyst limiting reagent (substrate), expressed as mol %. Several recent papers outlined use of "ppm level" an alternative means describing reaction systems. led us to delve deeper into literature assess whether is a practically useful descriptor catalyst quantities palladium-catalyzed reactions. Indeed, we conjectured that many could, unknowingly, employed low levels" (pre)catalyst, generally, what would spread ppm look like across selection reported vast array literature. In few selected examples, examined other metal systems for comparison palladium.

Язык: Английский

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MOF/POM hybrids as catalysts for organic transformations

Dalton Transactions, Год журнала: 2022, Номер 51(32), С. 11952 - 11986

Опубликована: Янв. 1, 2022

Insertion of molecular metal oxides, e.g. polyoxometalates (POMs), into metal-organic frameworks (MOFs) opens up new research opportunities in various fields, particularly catalysis. POM/MOF composites have strong acidity, oxygen-rich surface, and redox capacity due to typical characteristics POMs the large surface area, highly organized structures, tunable pore size, shape are MOFs. Such hybrid materials gained a lot attention astonishing structural features, hence potential applications organic catalysis, sorption separation, proton conduction, magnetism, lithium-ion batteries, supercapacitors, electrochemistry, medicine, bio-fuel, so on. The exceptional chemical physical POMOFs make them useful as catalysts simple transformations with high selectivity. Here, thorough catalytic study starts brief introduction related MOFs, is followed by synthetic strategies these several transformations. Furthermore, conversions like oxidation, condensation, esterification, some other types reactions including photocatalytic discussed length their plausible mechanisms. disadvantages difficulties faced field also been explored briefly from our perspectives.

Язык: Английский

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