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Safety of [Ir(dtbbpy)(ppy)2]PF6. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Alkene functionalization for the stereospecific synthesis of substituted aziridines by visible-light photoredox catalysis. Author is Yu, Wan-Lei; Chen, Jian-Qiang; Wei, Yun-Long; Wang, Zhu-Yin; Xu, Peng-Fei.

A novel strategy involving visible-light-induced functionalization of alkenes for the synthesis of substituted aziridines such as I [R = Me, CH2Br, Ph, etc.; Ar = Ph, 4-BrC6H4, 2-naphthyl, etc.; Ar1 = Ph, 4-F3CC6H4, 3,4-Cl2-C6H3, etc.] was developed. The readily prepared N-protected 1-aminopyridinium salts were used for the generation of N-centered radicals. This approach allowed the synthesis of aziridines bearing various functional groups with excellent diastereoselectivity under mild conditions. Moreover, this protocol was successfully applied to prepare structurally diverse nitrogen-containing frameworks.

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Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

HPLC of Formula: 676525-77-2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Visible-Light-Induced Photoreductive Generation of Radicals from Epoxides and Aziridines. Author is Larraufie, Marie-Helene; Pellet, Remy; Fensterbank, Louis; Goddard, Jean-Philippe; Lacote, Emmanuel; Malacria, Max; Ollivier, Cyril.

The photochem. ring opening reaction of epoxides and aziridines catalyzed by [Ir(dtbbpy)(ppy)2]+ or [Ru(ppy)3]2+ in combination with a Hantzsch ester to give hydroxy or amino ketones is reported. The resulting radicals also underwent substitution reaction with alkenes to give alkenones.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Electric Literature of C40H40F6IrN4P. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Visible-Light Photoredox-Catalyzed Remote Difunctionalizing Carboxylation of Unactivated Alkenes with CO2. Author is Song, Lei; Fu, Dong-Min; Chen, Liang; Jiang, Yuan-Xu; Ye, Jian-Heng; Zhu, Lei; Lan, Yu; Fu, Qiang; Yu, Da-Gang.

Remote difunctionalization of unactivated alkenes is challenging but a highly attractive tactic to install two functional groups across long distances. Reported herein is the first remote difunctionalization of alkenes with CO2. This visible-light photoredox catalysis strategy provides a facile method to synthesize a series of carboxylic acids bearing valuable fluorine- or phosphorus-containing functional groups. Moreover, this versatile protocol shows mild reaction conditions, broad substrate scope, and good functional-group tolerance. Based on DFT calculations, a radical adds to an unactivated alkene to smoothly form a new carbon radical, followed by a 1,5-hydrogen atom-transfer process, the rate-limiting step, generating a more stable benzylic radical. The reduction of the benzylic radicals by an IrII species generates the corresponding benzylic carbanions as the key intermediates, which further undergo nucleophilic attack with CO2 to generate carboxylates.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 676525-77-2, is researched, Molecular C40H40F6IrN4P, about An unprecedented {CuII14TeIV10} core incorporated in a 36-tungsto-4-silicate polyoxometalate with visible light-driven catalytic hydrogen evolution activity, the main research direction is copper tellurium tungsto silicate polyoxometalate catalytic hydrogen evolution activity.COA of Formula: C40H40F6IrN4P.

We report an unprecedented {CuII14TeIV10} core containing the novel μ,μ-/μ6-TeIVO32- mode and TeIVO44- embedded within a 36-tungsto-4-silicate POT shell, which constitutes the first example of a tellurous copper cluster in POMs. The structure-stabilizing and templating effects of tellurite anions are crucial for this assembly. Moreover, its visible light-driven catalytic H2 evolution activity and related quenching mechanism are demonstrated, and extensive stability studies are presented.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Electric Literature of C40H40F6IrN4P. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Photocatalytic activation of alkyl chlorides by assembly-promoted single electron transfer in microheterogeneous solutions.

Photoredox catalysis has developed into a powerful tool for the synthesis of organic compounds with diverse structures. However, stable carbon-chloride bonds remain beyond the energetic limits of the outer-sphere photoreductive activation. Herein, the organization of the reacting species in microstructured, aqueous solutions is demonstrated which allows generation of carbon-centered radicals from non-activated alkyl chlorides in the presence of double bonds via assembly-promoted single electron transfer. Photocatalytic systems consisting of a surfactant, organic substrates and additives have been designed, characterized and applied for radical dechlorination, addition and cyclization reactions. Cheap and com. available blue light-emitting diodes are used as the irradiation source for the transformations. Mechanistic studies indicate the accumulation of the energy of two visible light photons in one catalytic cycle.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Synthetic Route of C40H40F6IrN4P. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Deaminative Strategy for the Visible-Light-Mediated Generation of Alkyl Radicals. Author is Klauck, Felix J. R.; James, Michael J.; Glorius, Frank.

A deaminative strategy for the visible-light-mediated generation of alkyl radicals from redox-activated primary amine precursors is described. Abundant and inexpensive primary amine feedstocks, including amino acids, were converted in a single step into redox-active pyridinium salts and subsequently into alkyl radicals by reaction with an excited-state photocatalyst. The broad synthetic potential of this protocol was demonstrated by the alkylation of a number of heteroarenes under mild conditions.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: [Ir(dtbbpy)(ppy)2]PF6( cas:676525-77-2 ) is researched.Application In Synthesis of [Ir(dtbbpy)(ppy)2]PF6.Kim, Eunjin; Choi, Sungkyu; Kim, Heejeong; Cho, Eun Jin published the article 《Preparation of CF3-containing epoxides and aziridines by visible-light-driven trifluoromethylation of allylic alcohols and amines》 about this compound( cas:676525-77-2 ) in Chemistry – A European Journal. Keywords: preparation trifluoromethyl containing epoxides and aziridines; visible light driven trifluoromethylation allylic alc amines. Let’s learn more about this compound (cas:676525-77-2).

The present research pertains to a new trifluoromethylation method using visible light-induced photo catalysis to prepare CF3-Containing epoxides and aziridines, which are potential trifluoromethylated building blocks, from un-activated allylic alcs. and amines. For example, 2,2,2-trifluoroethyl-3-pentyl-oxirane was prepared by reacting pentylvinylcarbinol and trifluoroiodomethane in the presence of DBU and (OC-6-22)-tris[2-(2-pyridinyl-κN)phenyl-κC]-iridium in MeCN under irradiation of a 14 W light bulb. In conclusion, the author has developed visible-light-induced trifluoromethylations of allylic alcs. and allylic amines to yield CF3-containing epoxides and aziridines by a selective nucleophilic reaction over an elimination reaction of the intermediate. Advantageously, mild reaction conditions enabled the trifluoromethylation of a broad range of un-activated alkenes bearing various functional groups.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Improved Turn-on Times of Iridium Electroluminescent Devices by Use of Ionic Liquids, published in 2005-06-14, which mentions a compound: 676525-77-2, Name is [Ir(dtbbpy)(ppy)2]PF6, Molecular C40H40F6IrN4P, Synthetic Route of C40H40F6IrN4P.

We demonstrate an improvement in the turn-on time of electroluminescent devices based on the iridium complex [Ir(ppy)2(dtb-bpy)]+(PF6-), where ppy is 2-phenylpyridine and dtb-bpy is 4,4′-di-tert-butyl-2,2′-dipyridine, by introduction of the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate BMIM+(PF6-). Addition of 0.46 mol of the ionic liquid/mol of Ir complex reduces the turn-on time from 5 h to 40 min. However, the device lifetime is also reduced by a factor of 3 over this range, suggesting a tradeoff between device speed and stability. These results are discussed within the framework of the electrodynamic model of device operation and are found to be consistent with an increase in the ionic conductivity of the [Ir(ppy)2(dtb-bpy)]+(PF6-) films upon the addition of ionic liquid

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Electric Literature of C40H40F6IrN4P. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Visible-Light-Driven External-Reductant-Free Cross-Electrophile Couplings of Tetraalkyl Ammonium Salts.

Cross-electrophile couplings between two electrophiles are powerful and economic methods to generate C-C bonds in the presence of stoichiometric external reductants. Herein, the authors report a novel strategy to realize the first external-reductant-free cross-electrophile coupling via visible-light photoredox catalysis. A variety of tetraalkyl ammonium salts, bearing primary, secondary, and tertiary C-N bonds, undergo selective couplings with aldehydes/ketone and CO2. Notably, the in situ generated byproduct, trimethylamine, is efficiently utilized as the electron donor. Moreover, this protocol exhibits mild reaction conditions, low catalyst loading, broad substrate scope, good functional group tolerance, and facile scalability. Mechanistic studies indicate that benzyl radicals and anions might be generated as the key intermediates via photocatalysis, providing a new direction for cross-electrophile couplings.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

HPLC of Formula: 676525-77-2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Dialkylation of 1,3-Dienes by Dual Photoredox and Chromium Catalysis. Author is Schwarz, J. Luca; Huang, Huan-Ming; Paulisch, Tiffany O.; Glorius, Frank.

The direct conversion of feedstock chems. into value-added products is of broad interest in chem. research. Herein, we present a regioselective and diastereoselective three-component dialkylation of feedstock 1,3-dienes with Hantzsch esters and aldehydes for the synthesis of homoallylic alcs. The reaction is enabled by dual photoredox and chromium catalysis and can also be performed enantioselectively by employing chromium-bisoxazoline complexes.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”