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Formula: C24H40N4O4Rh2. 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 Propargylic Oxidations Catalyzed by Dirhodium Caprolactamate in Water: Efficient Access to α,β-Acetylenic Ketones. Author is McLaughlin, Emily C.; Doyle, Michael P..

Dirhodium(II) caprolactamate (Rh2(cap)4) with 70% weight/weight aqueous tert-Bu hydroperoxide (T-HYDRO) is a highly effective catalytic oxidation protocol for the selective C-H oxidation of alkynes to propargylic ketones. The oxidation occurs readily in aqueous solvent under mild conditions with an inexpensive and easily handled oxidant. α,β-Acetylenic carbonyl compounds are formed in up to 80% isolated yield.

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

Recommanded Product: 138984-26-6. 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: Dirhodium(II) tetrakis(caprolactam), is researched, Molecular C24H40N4O4Rh2, CAS is 138984-26-6, about Rh2(esp)2-catalyzed allylic and benzylic oxidations. Author is Wang, Yi; Kuang, Yi; Wang, Yuanhua.

The dirhodium(II) catalyst Rh2(esp)2 allows direct solvent-free allylic and benzylic oxidations by T-HYDRO with a remarkably low catalyst loading. This method is operationally simple and scalable at ambient temperature without the use of any additives. The high catalyst stability in these reactions may be attributed to a dirhodium(II,II) catalyst resting state, which is less prone to decomposition

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

Computed Properties of C24H40N4O4Rh2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Dirhodium(II) tetrakis(caprolactam), is researched, Molecular C24H40N4O4Rh2, CAS is 138984-26-6, about Facile generation of aziridines from the reaction of α-diazoamides with tethered oximino-ethers. Author is McMills, Mark C.; Wright, Dennis L.; Zubkowski, Jeffrey D.; Valente, Edward J..

Preparation of the central diazabicyclo[3.2.1]octane (I) core of quinocarcin via azomethine ylide intermediates generated from metal catalyzed cycloaddition of an electron deficient olefin with oximino-ether (II) containing a tethered α-diazoamide moiety was attempted. Cyclization of II with Me acrylate in the presence of several metal catalysts, e.g. Rh2(OAc)4 and Cu(acac)2, resulted in the formation of aziridine III with, at most, only trace amounts of the desired target compound I being formed when Cu(acac)2 and Cu(hfaca)2 were used as the catalysts.

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

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, Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov’t, Angewandte Chemie, International Edition called Synthesis of (±)-Tetrapetalone A-Me Aglycon, Author is Carlsen, Peter N.; Mann, Tyler J.; Hoveyda, Amir H.; Frontier, Alison J., 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, Product Details of 138984-26-6.

The first synthesis of (±)-tetrapetalone A-Me aglycon (I) is described. Key bond-forming reactions include Nazarov cyclization, a ring-closing metathesis promoted with complete diastereoselectivity by a chiral molybdenum-based complex, tandem conjugate reduction/intramol. aldol cyclization, and oxidative dearomatization.

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

Formula: C24H40N4O4Rh2. 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 Propargylic Oxidations Catalyzed by Dirhodium Caprolactamate in Water: Efficient Access to α,β-Acetylenic Ketones. Author is McLaughlin, Emily C.; Doyle, Michael P..

Dirhodium(II) caprolactamate (Rh2(cap)4) with 70% weight/weight aqueous tert-Bu hydroperoxide (T-HYDRO) is a highly effective catalytic oxidation protocol for the selective C-H oxidation of alkynes to propargylic ketones. The oxidation occurs readily in aqueous solvent under mild conditions with an inexpensive and easily handled oxidant. α,β-Acetylenic carbonyl compounds are formed in up to 80% isolated yield.

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

Doyle, Michael P.; Protopopova, Marina N.; Poulter, C. Dale; Rogers, Daniel H. published an article about the compound: Dirhodium(II) tetrakis(caprolactam)( cas:138984-26-6,SMILESS:C12=O[Rh+2]3(O=C4[N-]5CCCCC4)([N-]6C(CCCCC6)=O7)[N-](CCCCC8)C8=O[Rh+2]357[N-]1CCCCC2 ).Application of 138984-26-6. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:138984-26-6) through the article.

Diazo decomposition of trans,trans-farnesyl diazoacetate catalyzed by dirhodium(II) tetraacetate, Rh2(OAc)4, resulted in the formation of the 13-membered ring macrolide cyclopropane-fused lactones, (1α,13β)- and (1α,13α)-6,10,14,14-tetramethyl-(E),(E)-3-oxabicyclo[11.1.0]tetradeca-5,9-dien-2-one I, in good yield by intramol. cyclopropanation of the terminal double bond. Use of dirhodium(II) carboxamidate catalysts led to the exclusive formation of the product II from intramol. cyclopropanation of the allylic double bond. The influence of catalyst ligand on this distribution of products has been determined Similar results for intramol. cyclopropanation were obtained with (-)-(7R)-6,7-dihydrofarnesyl diazoacetate and cis-nerolidyl diazoacetate, both of which yielded macrolide cyclopropane-fused lactones with dirhodium(II) carboxylates but underwent cyclopropanation of the allylic double bond with use of dirhodium(II) carboxamidates. With neryl diazoacetate use of dirhodium(II) perfluorobutyrte, Rh2(pfb)4, gave the 11-membered macrolide product from C-H insertion into an allylic Me group at C(8) in high yield and without evidence of intramol. cyclopropanation.

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

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.Duquenne, Celine; Gallagher, Timothy F.; Axten, Jeffrey M. researched the compound: Dirhodium(II) tetrakis(caprolactam)( cas:138984-26-6 ).COA of Formula: C24H40N4O4Rh2.They published the article 《A novel method for the 1,2-carbonyl transposition of pleuromutilins》 about this compound( cas:138984-26-6 ) in Tetrahedron Letters. Keywords: pleuromutilin keto preparation transposition; allylic oxidation reduction keto pleuromutilin preparation. We’ll tell you more about this compound (cas:138984-26-6).

A new and efficient 1,2-carbonyl transposition procedure for the formation of 2-keto pleuromutilin compounds, e.g. I, is described. The synthetic sequence is performed in four steps and 26% overall yield.

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Dirhodium(II) tetrakis(caprolactam)(SMILESS: C12=O[Rh+2]3(O=C4[N-]5CCCCC4)([N-]6C(CCCCC6)=O7)[N-](CCCCC8)C8=O[Rh+2]357[N-]1CCCCC2,cas:138984-26-6) is researched.Synthetic Route of C7H13BrO2. The article 《Model Studies of the Stereoelectronic Effect in Rh(II) Mediated Carbenoid C-H Insertion Reactions》 in relation to this compound, is published in Journal of the American Chemical Society. Let’s take a look at the latest research on this compound (cas:138984-26-6).

Electronic effects of rhodium(II) catalyzed intramol. C-H insertion reactions of 1-methyl-1-(diazoacetyl)cyclohexane derivatives I (Y = H, D; R1 = OAc, OH, OSiMe2CMe3, N3, Me3SiCH2, MeO) were studied. The C-3 H/C-5 H insertion ratio is modulated by the electron donating or withdrawing capacity of the functional groups at C-3 and C-5. The general finding was that electron donating groups α to the C-H bond in question promote the insertion reaction. As well, the authors found that the ligands on the catalyst also affected product ratios. The more stabilized the carbene, i.e. with electron donating ligands, the more discriminating the regiochem. outcome. The authors were also able to demonstrate a deuterium kinetic isotope effect for the insertion reaction of I (Y = D, R1 = R2 = MeO).

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

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, Heterocycles called The paecilin puzzle – enantioselective synthesis of the proposed structures of paecilin A and B, Author is Tietze, Lutz F.; Ma, Ling; Jackenkroll, Stefan; Reiner, Johannes R.; Hierold, Judith; Gnanaprakasam, Boopathy; Heidemann, Sven, 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, SDS of cas: 138984-26-6.

For the synthesis of diastereomers of paecilin A and paecilin B, a phenol derivative containing an alkene group was treated with Pd(II) in the presence of the chiral BOXAX ligands. The synthesis of the target compounds was achieved using (4S,4’S)-2,2′-[1,1′-binaphthalene]-2,2′-diylbis[4,5-dihydro-4-(phenylmethyl)oxazole] (4S,4’S)-2,2′-[[1,1′-binaphthalene]-2,2′-diyl]bis[4,5-dihydro-4-(1-methylethyl)oxazole] as catalysts. A subsequent Sharpless dihydroxylation afforded two isomeric diols, which were further transformed into 31 and 32. The final steps included removal of the silyl protecting group with simultaneous lactone formation, oxidation and cleavage of the Me ether. For the preparation of the dimeric paecilin A brominated intermediate 38 was treated with (Bpin)2, S-Phos and Pd(OAc)2. The spectroscopic data of the new compounds [i.e.. (hydroxy)[(oxo)furanyl](oxo)benzopyrancarboxylic acid ester diastereomers] did not match those of the isolated natural products [i.e., 3,3′,4,4′-tetrahydro-5,5′-dihydroxy-4,4′-dioxo-2,2′-bis(tetrahydro-3-methyl-5-oxo-2-furanyl)[8,8′-bi-2H-1-benzopyran]-2,2′-dicarboxylic acid 2,2′-dimethyl ester (paecilin A) and (2R)-3,4-dihydro-5-hydroxy-4-oxo-2-[(2S,3S)-tetrahydro-3-methyl-5-oxo-2-furanyl]-2H-1-benzopyran-2-carboxylic acid (paecilin B) ].

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

Application of 138984-26-6. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Dirhodium(II) tetrakis(caprolactam), is researched, Molecular C24H40N4O4Rh2, CAS is 138984-26-6, about Tandem Sequence of Phenol Oxidation and Intramolecular Addition as a Method in Building Heterocycles. Author is Ratnikov, Maxim O.; Farkas, Linda E.; Doyle, Michael P..

A tandem phenol oxidation-Michael addition furnishing oxo- and -aza-heterocycles has been developed. Dirhodium caprolactamate [Rh2(cap)4] catalyzed oxidation by T-HYDRO of phenols with alcs., ketones, amides, carboxylic acids, and N-Boc protected amines tethered to their 4-position afforded 4-(tert-butylperoxy)cyclohexa-2,5-dienones that undergo Bronsted acid catalyzed intramol. Michael addition in one-pot to produce oxo- and -aza-heterocycles in moderate to good yields. The scope of the developed methodol. includes dipeptides Boc-Tyr-Gly-OEt and Boc-Tyr-Phe-OMe and provides a pathway for understanding the possible transformations arising from oxidative stress of tyrosine residues. A novel method of selective cleavage of O-O bond in hindered internal peroxide using TiCl4 has been discovered in efforts directed to the construction of cleroindicin F, whose synthesis was completed in 50% yield over just 3 steps from tyrosol using the developed methodol.

There is still a lot of research devoted to this compound(SMILES：C12=O[Rh+2]3(O=C4[N-]5CCCCC4)([N-]6C(CCCCC6)=O7)[N-](CCCCC8)C8=O[Rh+2]357[N-]1CCCCC2)Application of 138984-26-6, and with the development of science, more effects of this compound(138984-26-6) can be discovered.

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