Category: 94928-86-6

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An intramolecular dearomatization of indole derivatives based on visible-light-promoted [2+2] cycloaddition was achieved via energy transfer mechanism. The highly strained cyclobutane-fused angular tetracyclic spiroindolines, which were typically unattainable under thermal conditions, could be directly accessed in high yields (up to 99%) with excellent diastereoselectivity (>20:1 dr) under mild conditions. The method was also compatible with diverse functional groups and amenable to flexible transformations. In addition, DFT calculations provided guidance on the rational design of substrates and deep understanding of the reaction pathways. This process constituted a rare example of indole functionalization by exploiting visible-light-induced reactivity at the excited states.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 94928-86-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.94928-86-6, Name is fac-Tris(2-phenylpyridine)iridium, molecular formula is C33H27IrN3. In a Patent，once mentioned of 94928-86-6

The present invention relates to metal complexes and to electronic devices, in particular organic electroluminescent devices, containing these metal complexes.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Application of 94928-86-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.94928-86-6, Name is fac-Tris(2-phenylpyridine)iridium, molecular formula is C33H27IrN3. In a Patent，once mentioned of 94928-86-6

PROBLEM TO BE SOLVED: To provide: an iridium complex mixture that is excellent in solubility, can be easily produced, and is excellent in durability of an element; an organic electroluminescent element using the iridium complex mixture; and a method for producing the same. SOLUTION: The iridium complex mixture has two or more iridium complexes represented by general formula (1) defined by (A)mIr(B)n [A and B are bidentate ligands having different structures; A has a structure represented by general formula (2), where R1 to R3 are alkyl groups; and m is an integer from 0 to 2, and n is an integer from 1 to 3, satisfying m+n=3]. The bidentate ligands represented by B in the formula of at least two iridium complexes among the two or more iridium complexes are bidentate ligands having the same structure. COPYRIGHT: (C)2016,JPO&INPIT

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Electric Literature of 94928-86-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.94928-86-6, Name is fac-Tris(2-phenylpyridine)iridium, molecular formula is C33H27IrN3. In a Article，once mentioned of 94928-86-6

A visible-light-promoted C(sp3)-H amidation and chlorination of N-chlorosulfonamides (NCSs) is reported. This remote C(sp3)-H functionalization can be achieved in weak basic solution at room temperature with as little as 0.1 mol % of a photocatalyst. A variety of nitrogen-containing heterocycles (up to 94% yield) and chlorides (up to 93% yield) are prepared from NCSs. Late-stage C(sp3)-H functionalization of complex and biologically important (-)-cis-myrtanylamine and (+)-dehydroabietylamine derivatives can also be achieved with excellent yields and regioselectivity.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Reference of 94928-86-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.94928-86-6, Name is fac-Tris(2-phenylpyridine)iridium, molecular formula is C33H27IrN3. In a Article，once mentioned of 94928-86-6

Here we present a detailed kinetic study of the multisite proton-coupled electron transfer (MS-PCET) activations of aryl ketones using a variety of Br°nsted acids and excited-state Ir(III)-based electron donors. A simple method is described for simultaneously extracting both the hydrogen-bonding equilibrium constants and the rate constants for the PCET event from deconvolution of the luminescence quenching data. These experiments confirm that these activations occur in a concerted fashion, wherein the proton and electron are transferred to the ketone substrate in a single elementary step. The rates constants for the PCET events were linearly correlated with their driving forces over a range of nearly 19 kcal/mol. However, the slope of the rate-driving force relationship deviated significantly from expectations based on Marcus theory. A rationalization for this observation is proposed based on the principle of non-perfect synchronization, wherein factors that serve to stabilize the product are only partially realized at the transition state. A discussion of the relevance of these findings to the applications of MS-PCET in organic synthesis is also presented.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Reference of 94928-86-6, In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 94928-86-6, name is fac-Tris(2-phenylpyridine)iridium. In an article，Which mentioned a new discovery about 94928-86-6

Cyclometalated iridium(iii) complexes have been prepared in high yields from base-assisted transmetalation reactions of cis-bis(aquo)iridium(iii) complexes with boronated aromatic proligands. Reactions proceed at room temperature. Potassium hydroxide and potassium phosphate are effective supporting bases. Kinetic, meridional isomers are isolated because of the mildness of the new technique. Syntheses are faster with KOH, but the gentler base K3PO4 broadens the reaction’s scope. Complexes of chelated ketone, aldehyde, and alcohol complexes are reported that bind iridium through formally neutral oxygen and formally anionic carbon. The new complexes luminesce with microsecond-scale lifetimes at 77 K and nanosecond-scale lifetimes at room temperature; emission quenches in air. Two complexes, an aldehyde and its reduced (alcohol) derivative, are crystallographically characterized. Their bonding is examined with density-functional theory calculations. Time-dependent computations suggest that the Franck-Condon triplet states of these complexes have mixed orbital parentage, arising from one-particle transitions that mingle through configuration interaction.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.94928-86-6. In my other articles, you can also check out more blogs about 94928-86-6

Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Computed Properties of C33H27IrN3, Which mentioned a new discovery about 94928-86-6

Three Ir(iii) complexes IrC1, IrC2, and IrC3 substituted with 4-(diphenylamino)phenyl (TPA), 4-(9H-carbazol-9-yl)phenyl (Cz1), and 9-phenyl-9H-carbazol-3-yl (Cz2) moieties were prepared and fully characterized as phosphorescent emitters. In comparison with Ir(ppy)3, introduction of TPA, Cz1, and Cz2 moieties strongly improved the oxygen sensitivities of IrC1-IrC3. Short-decayed IrC1 with I0/I100 of 168.6 and KappSV of 202.2 bar-1 in THF exhibited the highest sensitivity for oxygen. TPA and Cz moieties caused remarkable collision radius variations of the Ir(iii) complexes with 2.13 ± 0.08 for sigmaIrC1/sigmaIr(ppy)3, 1.24 ± 0.06 for sigmaIrC2sigmaIr(ppy)3, and 1.54 ± 0.08 for sigmaIrC3sigmaIr(ppy)3. For demonstrating the dependence of oxygen sensitivity on the molecular structure of the oxygen-sensitive probes (OSPs), the delocalization of spin populations (DSPs) has been applied for the first time to confirm the collision radius variations of Ir(iii) complexes. Remarkable DSPs were found on the TPA, Cz1, and Cz2 moieties with the spin population (percentage of the spin population) of 0.23210 (11.61%), 0.08862 (4.43%), and 0.13201 (6.60%), respectively. And strong linear correlations (R2 = 0.997) between the collision radius variations and spin population on TPA and Cz moieties were apparent. The DSPs could be used to describe the dependence of oxygen sensitivity on the molecular structure of the OSPs. For achieving real-time oxygen sensing, the photostability, oxygen sensing performance, and operational stability of IrC1-IrC3 and Ir(ppy)3 immobilized in ethyl cellulose (EC) were investigated. The IrC1-EC film demonstrated outstanding photostability after 60 min of irradiation and excellent operational stability for continuous oxygen monitoring with no attenuation of the original emission intensity in 4000 s. This study quantified and analyzed the dependence of oxygen sensitivity on the molecular structure of Ir(iii) complexes for the first time and illustrated a feasible approach to achieve high-efficiency sensors for real-time monitoring of oxygen.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Safety of fac-Tris(2-phenylpyridine)iridium, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 94928-86-6, Name is fac-Tris(2-phenylpyridine)iridium, molecular formula is C33H27IrN3. In a Article, authors is Garrido-Castro, Alberto F.，once mentioned of 94928-86-6

In this communication, a new photocatalytic strategy for the addition of alkyl-radical derivatives to N-sulfinimines with complete diastereoselectivity and moderate to good yields is presented. This is the first asymmetric photocatalytic addition to N-sulfinimines under visible light irradiation with smooth conditions and functional group tolerance.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Recommanded Product: 94928-86-6, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 94928-86-6, Name is fac-Tris(2-phenylpyridine)iridium, molecular formula is C33H27IrN3. In a Patent, authors is ，once mentioned of 94928-86-6

The present invention relates to phosphorous host materials and an organic electroluminescent device comprising the same. By using the phosphorous host material of the present invention, an organic electroluminescent device having significantly improved operational lifespan can be produced.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Application In Synthesis of fac-Tris(2-phenylpyridine)iridium, Which mentioned a new discovery about 94928-86-6

A new photoredox-catalyzed chlorotrifluoromethylation reaction of internal arylalkynes under mild conditions using visible light has been developed. The reactions proceed with high levels of regio- and stereoselectivity and utilize commercially available CF3SO2Cl as both the CF3 and Cl source. In the mechanistic pathway for this process, generation of the CF3 radical and chloride ion occurs by Ir(ppy)3-photocatalyzed reductive decomposition of CF3SO2Cl. The synthetically important trifluoromethyl-substituted vinyl chlorides produced in this process can be readily transformed to 1,1-bis-arylalkenes by using Suzuki coupling.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI