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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 138984-26-6, is researched, SMILESS is C12=O[Rh+2]3(O=C4[N-]5CCCCC4)([N-]6C(CCCCC6)=O7)[N-](CCCCC8)C8=O[Rh+2]357[N-]1CCCCC2, Molecular C24H40N4O4Rh2Journal, Journal of the American Chemical Society called Control of chemoselectivity in catalytic carbenoid reactions. Dirhodium(II) ligand effects on relative reactivities, Author is Padwa, Albert; Austin, David J.; Hornbuckle, Susan F.; Semones, Mark A.; Doyle, Michael P.; Protopopova, Marina N., the main research direction is chemoselectivity catalysis carbenoid reaction; rhodium ligand effect chemoselectivity; aromatic substitution chemoselectivity rhodium ligand; cyclopropanation chemoselectivity rhodium ligand; insertion carbon hydrogen chemoselectivity rhodium ligand; cycloaddition aromatic chemoselectivity rhodium ligand; carbon ylide chemoselectivity rhodium ligand; indenone dihydroalkenyl; bicyclohexanone aryl; cyclopentanone dimethylpropenyl; azabicycloundecatrienone tertbutyl; pyrrolidinone aryltertbutyldihydro; oxabicyclooctenecarboxylate oxo; oxatricyclononanone methyl.COA of Formula: C24H40N4O4Rh2.

Chemoselectivity in dirhodium(II) catalyzed intramol. carbenoid reactions of diazo carbonyl compounds is controlled by the ligands of the catalyst. Changing the dirhodium(II) ligands from the strongly electron withdrawing perfluorobutyrate to carboxamides causes a complete reversal in product selectivity from aromatic substitution to cyclopropanation, from carbon-hydrogen insertion to cyclopropanation, from aromatic cycloaddition to carbon-hydrogen insertion, and from aromatic substitution to carbonyl ylide formation. Results obtained with ten α-diazo carbonyl compounds in four different competitive reactions demonstrate that with rhodium(II) perfluorobutyrate, only the former transformation occurs, whereas with rhodium(II) caprolactam or acetamide only the latter transformation is observed With rhodium(II) acetate as the catalyst, mixtures of products from these competitive processes were obtained. The exceptionally high chemoselectivity obtained in these competitive intramol. reactions is due to the inherent electron demand from ligands of the rhodium(II) carbene intermediate.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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Interesting scientific research on 138984-26-6

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Journal of Organic Chemistry called Ligand-Induced Selectivity in the Rhodium(II)-Catalyzed Reactions of α-Diazo Carbonyl Compounds, Author is Padwa, Albert; Austin, David J.; Hornbuckle, Susan F., which mentions a compound: 138984-26-6, SMILESS is C12=O[Rh+2]3(O=C4[N-]5CCCCC4)([N-]6C(CCCCC6)=O7)[N-](CCCCC8)C8=O[Rh+2]357[N-]1CCCCC2, Molecular C24H40N4O4Rh2, COA of Formula: C24H40N4O4Rh2.

3-Allyl-1-diazo-5-phenyl-2,5-pentanedione and 3-(3-butenyl)-1-diazo-5-phenyl-2,5-pentanedione were allowed to react with a trace amount of a rhodium(II) catalyst in methylene chloride at room temperature The major products isolated corresponded to the internal trapping of a carbonyl ylide as well as intramol. cyclopropanation. Changing the catalyst from Rh2(OAc)4 to Rh(II) caprolactamate to Rh(II) trifluoroacetate caused a significant alteration in product distribution. A rather unusual and unexpected regiochem. crossover in the cycloaddition occurred when Rh(II) trifluoroacetate was used and is most likely due to complexation of the metal with the dipole. A computational approach to rationalize the observed product distribution was carried out. The thermodn. stabilities of cycloaddition transition states were approximated from the computationally derived strain energies of ground state mols. using traditional force-field techniques. Globally minimized ground state energies were obtained for all possible cycloaddition products, and final strain energies were calculated In all cases studied, the lower energy isomer corresponded to the cycloadduct actually isolated. A study of the regiochem. aspects of the Rh(II)-catalyzed reaction of 1-diazo-3-(2-oxo-2-phenylethyl)hexane-2,5-dione was also carried out. Cyclization of the initially formed rhodium carbenoid occurred exclusively across the acetyl rather than the benzoyl group. The structure of the internal cycloadduct was assigned on the basis of a proton-detected multiple-bond heteronuclear multiple-quantum coherence experiment

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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In addition to the literature in the link below, there is a lot of literature about this compound(Dirhodium(II) tetrakis(caprolactam))HPLC of Formula: 138984-26-6, illustrating the importance and wide applicability of this compound(138984-26-6).

A formal [3 + 3]-cycloaddition of enoldiazoacetates with donor-acceptor cyclopropanes was realized by the combination of a Lewis acid-catalyzed diastereoselective [3 + 2]-cycloaddition [e.g., enol diazoacetate I + cyclopropane II in presence of Yb(OTf)3 → cyclopentane III (84% isolated yield, dr 10:1)] and a subsequent rhodium-catalyzed chemoselective ring expansion [III → IV (88%) in presence of Rh2(cap)4, cap = caprolactamate]. This tandem transformation provides an efficient approach to highly functionalized cyclohexenes.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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Interesting scientific research on 138984-26-6

HPLC of Formula: 138984-26-6. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Dirhodium(II) tetrakis(caprolactam), is researched, Molecular C24H40N4O4Rh2, CAS is 138984-26-6, about The oxidative acylnitroso hetero-Diels-Alder reaction catalyzed by dirhodium caprolactamate. Author is Tusun, Xiarepati; Lu, Chong-Dao.

An effective protocol is described for the generation and in situ Diels-Alder trapping of acylnitroso derivatives In this procedure, the oxidation of hydroxamic acid is efficiently catalyzed by dirhodium(II) caprolactamate with tert-Bu hydroperoxide (TBHP) in the presence of dienes at room temperature Using this approach a variety of hetero-Diels-Alder cycloadducts were obtained in yields of up to 96% at 0.1 mol% catalyst loading.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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The synthetic utility of the combined C-H functionalization/Cope rearrangement reaction was greatly expanded by the design of substrates that will react through a boat transition state instead of a chair transition state. This gave the reversed diastereomeric series of products in a highly stereoselective manner. This study demonstrates the value of computational studies, not only to rationalize a new synthetic process, but also to identify opportunities to develop new reactions. The results showcase the synthetic potential of using carbenoid chem. to achieve highly enantioselective C-H functionalization reactions.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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There are many compounds similar to this compound(138984-26-6)Computed Properties of C24H40N4O4Rh2. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Dirhodium(II) tetrakis(caprolactam)( cas:138984-26-6 ) is researched.Computed Properties of C24H40N4O4Rh2.Wang, Hong-Tu; Lu, Chong-Dao published the article 《Synthesis of 3,4-dihydropyrrolo[2,1-a]isoquinolines based on [3+2] cycloaddition initiated by Rh2(cap)4-catalyzed oxidation》 about this compound( cas:138984-26-6 ) in Tetrahedron Letters. Keywords: azomethine ylide dipolarophile rhodium catalyzed oxidation dipolar cycloaddition; hydropyrroloisoquinoline preparation. Let’s learn more about this compound (cas:138984-26-6).

Azomethine ylides were efficiently generated via Rh2(cap)4-catalyzed oxidation (cap = caprolactamate) of tetrahydroisoquinolines in the presence of base. The ylides were trapped in situ via [3+2] cycloaddition with dipolarophiles and were subjected to oxidative aromatization, facilitated by N-bromosuccinimide, to provide 3,4-dihydropyrrolo[2,1-a]isoquinolines in moderate to excellent yields.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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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 One-Pot Synthesis of α-Diazo-γ,δ-unsaturated Esters as Versatile Building Blocks for Functionalized Dienes, Cyclopentenes, and 5,7-Fused Bicycles, published in 2021-08-06, which mentions a compound: 138984-26-6, Name is Dirhodium(II) tetrakis(caprolactam), Molecular C24H40N4O4Rh2, Name: Dirhodium(II) tetrakis(caprolactam).

The synthesis of novel allylic α-diazo carbonyl compounds I [R = Et, n-Pr, Ph, etc.] was achieved through a one-pot strategy involving base-catalyzed allylation of 1,3-dicarbonyls with readily available allylic bromides followed by the deacylative diazo transfer reaction. Besides the broad substrate scope related to this method, other relevant features included the use of simple and inexpensive reagents, non-toxic solvents and mild reaction conditions. The synthetic utility of these α-diazo-γ,δ-unsaturated esters was further demonstrated through rhodium-catalyzed transformations, where the type of product formed was dependent on both the substrate and catalyst employed. Thus, treating α-diazo-γ,δ-unsaturated esters with catalytic Rh2(pfb)4 in acetonitrile under reflux resulted in a diastereoselective β-hydride migration to give 2Z,4E-dienes RCH=C(COOMe)CH=CHCOOEt in good yields. On the other hand, the combination of Rh2(OAc)4 as the catalyst in toluene under reflux for 10 min led the aryl-substituted diazo compounds to a regioselective intramol. Buchner reaction to furnish 5,7-fused bicyclic tetraenes II [X = H, 4-F, 5-Cl, etc.] in high yields, while the alkyl-substituted analogs undergo intramol. C-H insertion to give functionalized cyclopentenes of anti-configuration.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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Electric Literature of C24H40N4O4Rh2. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Dirhodium(II) tetrakis(caprolactam), is researched, Molecular C24H40N4O4Rh2, CAS is 138984-26-6, about Dirhodium caprolactamate and tert-butyl hydroperoxide – a universal system for selective oxidations. Author is Ratnikov, Maxim O.; Doyle, Michael P..

A review. Oxidations with tert-Bu hydroperoxide (TBHP) catalyzed by dirhodium caprolactamate [Rh2(cap)4] provide mild and selective protocols for the oxidative Mannich reaction, conversion of secondary amines to imines, dearomatization of 4-substituted phenols, and oxyfunctionalization of allylic, benzylic, and propargylic positions. The dirhodium catalyst in combination with TBHP is a convenient platform for mechanistic investigations, and their uses point to a variety of directions for the future evolution of the field.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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HPLC of Formula: 138984-26-6. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Dirhodium(II) tetrakis(caprolactam), is researched, Molecular C24H40N4O4Rh2, CAS is 138984-26-6, about Kinetic isotope effects in the intramolecular insertion of a metal carbene into a C-H bond adjacent to nitrogen. Author is Sulikowski, Gary A.; Lee, Sangku.

An internal competition was used to estimate the kinetic isotope effect of an intramol. metal carbene C-H insertion reaction alpha to a nitrogen atom of diazo compound I. A stereoelectronic effect is proposed to explain the difference in magnitude of the observed KIEs for cis and trans diastereomers.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
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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: 138984-26-6, is researched, Molecular C24H40N4O4Rh2, about Metal-catalyzed reaction of N-(2-indolyl)methyl, N-bis(trimethylsilyl)methyl diazoamides: an entry into the β-carboline ring system, the main research direction is carboline ring containing compound stereoselective preparation.Name: Dirhodium(II) tetrakis(caprolactam).

The intramol. metal-catalyzed reaction of N-(2-indolyl)methyl, N-bis(TMS)methyl diazoamides proceeds with high conformational control and chemoselectivity to give cyclopropyl derivatives, which rearrange to β-carboline products.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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