Category: 32717-95-6

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Chloro(1,5-cyclooctadiene)copper(I) dimer( cas:32717-95-6 ) is researched.Safety of Chloro(1,5-cyclooctadiene)copper(I) dimer.Havlin, Robert; McMahon, Michael; Srinivasan, Ranjani; Le, Hongbiao; Oldfield, Eric published the article 《Solid-State NMR and Density Functional Investigation of Carbon-13 Shielding Tensors in Metal-Olefin Complexes》 about this compound( cas:32717-95-6 ) in Journal of Physical Chemistry A. Keywords: carbon 13 shielding metal olefin complex; NMR carbon 13 shielding olefin complex; density functional NMR carbon 13 shielding. Let’s learn more about this compound (cas:32717-95-6).

The authors determined the principal elements of the chem. shift tensors for metal-olefin complexes: [Ag(cod)2]BF4 (cod = cis,cis-cycloocta-1,5-diene), [CuCl(cod)]2, PtCl2(cod), [RhCl(cod)]2, and K[PtCl3(C2H4)] using magic-angle sample spinning and a Bayesian probability method to deduce μ, ρ in the Herzfeld-Berger equations. These principal elements also were computed by using d. functional methods with two different types of functionals and partial geometry optimization. The overall slope and R2 values between the theor. and exptl. tensor elements are good, ranging from 1.06 to 1.16 for the slope (vs. the ideal value of 1) and 0.98-0.99 for the goodness of fit parameter R2 (vs. the ideal value of 1). The use of a hybrid functional results in a slightly worse slope, an effect which is largest for the compounds with the largest paramagnetic shifts. There are no particularly good correlations between C-C bond lengths, isotropic/anisotropic shift tensor elements or computed bond orders; however, the correlation between shielding and (Mulliken) charge of ∼-120 ppm/electron is consistent with previous exptl. estimates on olefins and aromatic compounds The orientations of the shielding tensor elements in the cod complexes change in a relatively continuous manner with increases in shielding (from d10 to d8 metals), with δ33 becoming highly rotated (37.5°) from the normal to the C:C bond axis in [RhCl(cod)]2. Overall, these results indicate that d. functional methods now permit the relatively accurate reproduction of metal-ligand shielding patterns in systems whose structures are known, which should facilitate their use in probing metal-ligand geometries in systems whose structures are less certain, such as in metalloproteins.

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Formula: C16H16Cl2Cu2. 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: Chloro(1,5-cyclooctadiene)copper(I) dimer, is researched, Molecular C16H16Cl2Cu2, CAS is 32717-95-6, about Chemistry of copper(I) β-diketonate complexes. VI. Synthesis, characterization and chemical vapor deposition of 2,2-dimethyl-6,6,7,7,8,8,8-heptafluoro-3,5-octanedione (fod) copper(I) (fod)CuL complexes and the solid state structure of (fod)Cu(PMe3). Author is Chi, K. M.; Corbitt, T. S.; Hampden-Smith, M. J.; Kodas, T. T.; Duesler, E. N..

A series of copper(I) compounds of the general formula (fod)CuL, where fod = 2,2-dimethyl-6,6,7,7,8,8,8-heptafluoro-3,5-octanedione, and L = PMe3, PEt3, 1,5-cyclooctadiene (1,5-COD), vinyltrimethylsilane (VTMS), 2-butyne, bis(trimethylsilyl)acetylene (BTMSA), have been prepared by the reaction of Na[fod] with CuCl in the presence of the appropriate amount of the Lewis base, L. All the compounds were characterized by elemental anal., 1H, 13C, 19F, 31P and IR spectroscopies. The spectroscopic data are consistent with the chelation of the β-diketonate ligand through its oxygen atoms to the copper(I) center. The anal. data are consistent with the empirical formula (fod)CuL. One compound, (fod)CuPMe3, was characterized in the solid-state by single-crystal x-ray diffraction which confirmed the empirical formula and revealed the monomeric nature of this species in the solid state. The distorted trigonal planar coordination environment observed for this species is common to these species. The Cu-O distances are significantly different within the limits of error on the data possibly as a result of inductive effects of the different β-diketonate substituents. Hot- and cold-wall chem. vapor deposition experiments revealed that these species are generally not suitable as precursors for the deposition of copper due to their low thermal stability. While pure copper films could be deposited, as determined by Auger electron spectroscopy, from the compounds (fod)CuL, where L = PMe3, 2-butyne and BTMSA, heating the precursors to increase their vapor pressures resulted in significant thermal decomposition in the source reservoir. As a result, deposition rates of only 100 Å/min were achieved. No selectivity was observed on W vs. SiO2 substrates under the conditions employed. The other compounds, (fod)CuL, where L = 1,5-COD, VTMS, were too thermally unstable for CVD experiments

From this literature《Chemistry of copper(I) β-diketonate complexes. VI. Synthesis, characterization and chemical vapor deposition of 2,2-dimethyl-6,6,7,7,8,8,8-heptafluoro-3,5-octanedione (fod) copper(I) (fod)CuL complexes and the solid state structure of (fod)Cu(PMe3)》,we know some information about this compound(32717-95-6)Formula: C16H16Cl2Cu2, but this is not all information, there are many literatures related to this compound(32717-95-6).

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Recommanded Product: 32717-95-6. 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: Chloro(1,5-cyclooctadiene)copper(I) dimer, is researched, Molecular C16H16Cl2Cu2, CAS is 32717-95-6, about Infrared and Raman spectra of 1,5-cyclooctadiene complexes of copper(I), silver(I), gold(I), and gold(III) and the nature of the gold compounds.

There have been several recent reports on the spectra of C2H4 and 1,5-cyclooctadiene complexes of d8 metallic ions which have shown that 2 bands in the vibrational spectrum of the olefin are sensitive to the coordinated metal. A series of d10 ions were complexed to 1,5-cyclooctadiene and a shift was found having the order Au(I) ∼ Cu(I) > Ag(I). Three distinct compounds were also formed between 1,5-cyclooctadiene and Au(III) or Au(I) and their ir spectra and suggested structures are reported.

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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: 32717-95-6, is researched, Molecular C16H16Cl2Cu2, about Iridium(I)-Catalyzed α-C(sp3)-H Alkylation of Saturated Azacycles, the main research direction is saturated azacycle regioselective alkylation alkene iridium amidoxime directing group; iridium regioselective alkylation catalyst.Reference of Chloro(1,5-cyclooctadiene)copper(I) dimer.

Saturated azacycles are commonly encountered in bioactive compounds and approved therapeutic agents. The development of methods for functionalization of the α-methylene C-H bonds of these highly privileged building blocks is of great importance, especially in drug discovery. While much effort has been dedicated towards this goal of using a directed C-H activation approach, the development of directing groups that are both general, as well as practical, remains a significant challenge. Herein, the design and development of novel amidoxime directing groups is described for Ir(I)-catalyzed α-C(sp3)-H alkylation of saturated azacycles using readily available olefins as coupling partners. This protocol extends the scope of saturated azacycles to piperidines, azepane, and tetrahydroisoquinoline that are incompatible with our previously reported directing group. A variety of olefin coupling partners, including previously unreactive di-substituted terminal olefins and internal olefins, are compatible with this transformation. The selectivity for a branched α-C(sp3)-alkylation product is also observed for the first time when acrylate is used as the reaction partner. The development of practical, one-step installation and removal protocols further add to the utility of amidoxime directing groups.

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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: 32717-95-6, is researched, SMILESS is C12=C(CCC3=C4CC2)[Cu+]1534[Cl-][Cu+]678(C9=C6CCC7=C8CC9)[Cl-]5, Molecular C16H16Cl2Cu2Journal, Bulletin de la Societe Chimique de France called Organometallic chemistry. VI. Meerwein reaction. IV. Mechanistic aspects, Author is Al Adel, I.; Adeoti Salami, B.; Levisalles, J.; Rudler, H., the main research direction is Meerwein reaction mechanism; allyl alc Meerwein reaction; benzenediazonium Meerwein reaction; pentenol Meerwein reaction.HPLC of Formula: 32717-95-6.

The key step in the Meerwein reaction of p-ClC6H4N2+ salts in the presence of unsaturated compounds is formation of aryl radicals; complexation of the Cu(I) salt with the unsaturated compound plays only a minor role. Thus, treatment of RCuCl or R2CuBF4 (R = cyclooctadiene) with p-ClC6H4N2+X- (X = Cl, BF4) gives no Meerwein products. Similarly, treatment of CH2:CHCH2OH, which complexes easily with Cu, with p-ClC6H4N2+ and a Cu(I) catalyst gives only 5% of the Meerwein product p-ClC6H4CH2CHClCH2OH. On the other hand, the Meerwein reaction of CH2:CH(CH2)2CH2OH with p-ClC6H4N2+ gives the Meerwein product p-ClC6H4CH2CHCl(CH2)2CH2OH, I [via an aryl intermediate oxidized to a carbocation by Cu(I)], as well as p-ClC6H4N:NCH(CH2C6H4Cl-p)(CH2)2CH2OH and II.

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Wassenaar, Jeroen; Siegler, Maxime A.; Spek, Anthony L.; de Bruin, Bas; Reek, Joost N. H.; van der Vlugt, Jarl Ivar published the article 《Versatile new C3-symmetric tripodal tetraphosphine ligands; structural flexibility to stabilize CuI and RhI species and tune their reactivity》. Keywords: phosphine tetraphosphine tripodal indole preparation copper rhodium iridium complex; cyclopropanation catalyst copper tetraphosphine tripodal indole linked complex; rhodium iridium tripodal tetraphosphine tetradentate indole linked complex preparation; oxidation rhodium tripodal tetraphosphine tetradentate indole linked complex; divalent monomeric rhodium tripodal tetraphosphine tetradentate indole linked complex; ESR spectra divalent monomeric rhodium tripodal tetraphosphine indole complex; magnetic susceptibility divalent monomeric rhodium tripodal tetraphosphine indole complex; redox potential divalent monomeric rhodium tripodal tetraphosphine indole complex; hydride rhodium divalent monomeric rhodium tripodal tetraphosphine indole complex; crystal structure rhodium iridium copper tripodal indolyltetraphosphine complex; mol structure rhodium iridium copper tripodal indolyltetraphosphine complex.They researched the compound: Chloro(1,5-cyclooctadiene)copper(I) dimer( cas:32717-95-6 ).Formula: C16H16Cl2Cu2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:32717-95-6) here.

Tripodal indolyl phosphine ligands, P(X1PR2)3 (1, 2; X = 3-methyl-1,2-indolediyl; R = Ph, iPr) and P(X2PPh2)3 (3, X2 = 3-methyl-2,1-indolediyl) were prepared by lithiation and phosphination of 3-methylindole; crystal structures, catalytic activity and reactivity of Cu(I), Rh(I) Rh(II) complexes of 1-3 were explored. The high-yielding synthesis and detailed characterization of two well-defined, linkage isomeric tripodal, tetradentate all-phosphorus ligands 1-3 is described. Coordination to Cu(I) resulted in formation of complexes [CuCl[P(X1PR2-κP)2(X1PR2)-κP]] (4, 5, R = Ph, iPr) and [CuCl[P(X2PR2-κP)2(X2PR2)-κP]] (6), for which the mol. structures indicate overall tridentate coordination to the copper atom in the solid state, with one dangling peripheral phosphine. The solution studies suggest fast exchange between the three phosphine side-arms. These new CuI complexes 4-6 catalyze cyclopropanation of styrene with ethyldiazoacetate (EDA), yielding Et 2-phenylcyclopropanecarboxylate with 70:30 trans:cis-selectivity. The anticipated well-defined tetradentate coordination in a C3-sym. fashion was achieved with RhI and IrI, leading to the overall five-coordinated complexes [MCl[P(X1PR2-κP)3-κP]] (7, 9, M = Rh, Ir), [MCl[P(X2PR2-κP)3-κP]] (8, 10, M = Rh, Ir), [Rh(L)[P(X1PR2-κP)3-κP]][BF4] (11, 12, L = η2-norbornadiene, CO). Complex 11 has the norbornadiene (nbd) ligand coordinated in an unprecedented monodentate 2,3-η2 mode to Rh. Furthermore, unexpected but very interesting redox-chem. and reactivity was displayed by the Rh(Cl)-complexes 7 and 8. Oxidation resulted in the formation of stable RhII metalloradicals [7]PF6 and [8]PF6 that were characterized by x-ray crystallog., magnetic susceptibility measurements, cyclic voltammetry, and ESR spectroscopy. Subsequent redox-reactivity of these metalloradicals toward mol. hydrogen is described, resulting in the formation of RhIII hydride compounds

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Category: quinoxaline. 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: Chloro(1,5-cyclooctadiene)copper(I) dimer, is researched, Molecular C16H16Cl2Cu2, CAS is 32717-95-6, about Organometallic chemistry. VI. Meerwein reaction. IV. Mechanistic aspects. Author is Al Adel, I.; Adeoti Salami, B.; Levisalles, J.; Rudler, H..

The key step in the Meerwein reaction of p-ClC6H4N2+ salts in the presence of unsaturated compounds is formation of aryl radicals; complexation of the Cu(I) salt with the unsaturated compound plays only a minor role. Thus, treatment of RCuCl or R2CuBF4 (R = cyclooctadiene) with p-ClC6H4N2+X- (X = Cl, BF4) gives no Meerwein products. Similarly, treatment of CH2:CHCH2OH, which complexes easily with Cu, with p-ClC6H4N2+ and a Cu(I) catalyst gives only 5% of the Meerwein product p-ClC6H4CH2CHClCH2OH. On the other hand, the Meerwein reaction of CH2:CH(CH2)2CH2OH with p-ClC6H4N2+ gives the Meerwein product p-ClC6H4CH2CHCl(CH2)2CH2OH, I [via an aryl intermediate oxidized to a carbocation by Cu(I)], as well as p-ClC6H4N:NCH(CH2C6H4Cl-p)(CH2)2CH2OH and II.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Chloro(1,5-cyclooctadiene)copper(I) dimer, is researched, Molecular C16H16Cl2Cu2, CAS is 32717-95-6, about Rare, Hexatomic, Boat-Shaped, Cross-Linked Bis(iminodiphenylphosphorano)methanediide Pincer Carbon Bridged Photoluminescent Copper Clusters Capped with Methyl or Halide Bridges.SDS of cas: 32717-95-6.

The dimeric dilithium methanediide salt [Li2C(Ph2P:NSiMe3)2]2 ([Li2L]2, L = [C(Ph2P:NSiMe3)2]2-) reacted with 6 equiv of [NEt4CuCl2] and 2 equiv of LiMe in THF or ether to give exclusively the six-Cu cluster complex [Cu6L2Me2] (1). Similarly, [Li2L]2 reacted with 3 equiv of the bimetallic Cu halide complexes [(cod)2Cu2X2] (X = Cl, Br, I) in the same solvent to give good yields of three halide-capped six-Cu clusters [Cu6L2(X)2] [X = Cl (2), Br (3), I (4)] with structures very similar to that of 1. These four hexacopper clusters (1-4) as a family show similar 31P NMR spectra with an AB pattern with slightly different chem. shifts but identical coupling constants in solution The reactivity of 2 was explored, and 1 can be quant. generated by addition of 2 equiv of LiMe to 2. Also, the cluster [Cu6L2(OtBu)2] (5) with a similar cage structure is quant. generated by reaction of 2 with 2 equiv of NaOtBu in solution according to 31P NMR spectroscopy. An addnl. Cu complex with a bicopper formulation, [Cu2L(PPh3)2] (6), was synthesized by reaction of [Li2L]2 with 2 equiv of [(NEt4)Cu(PPh3)Cl2]. The authors also observed a monocopper iodide complex with the doubly protonated parent methylene bridged ligand H2L, [CuI(H2L)] (7), as a minor component (∼10%) during the preparation of complex 4. Complexes 1-4, 6, and 7 were characterized by x-ray crystal diffraction. All four clusters (1-4) show a rare boat-shaped conformation of hexacopper clusters assembled by crosslinking of two Cu atoms via geminal substitution on one bis(iminophosphorano)methanediide ligand. Two of these units combine along with two addnl. Cu atoms to form the boat cluster. There is extensive direct Cu-Cu bonding. The cluster is doubly capped, top and bottom, by Me groups (1) or halides (2-4, X = Cl, Br, I). All of these six-Cu clusters absorb and emit in the UV-visible region. The absorption bands and photoluminescent wavelengths are substituent dependent; thus, optical properties of the complex are tunable by substitution of the capping ligands. The spectral and bonding characteristics were explored by Gaussian DFT calculations and NBO anal.

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Chen, Zhi; Chen, Zhi-Chao; Du, Wei; Chen, Ying-Chun published the article 《Asymmetric [4 + 3] Annulations for Constructing Divergent Oxepane Frameworks via Cooperative Tertiary Amine/Transition Metal Catalysis》. Keywords: oxepane framework preparation enantioselective diastereoselective; indole vinyl carbonate amine metal catalyst annulation.They researched the compound: Chloro(1,5-cyclooctadiene)copper(I) dimer( cas:32717-95-6 ).Formula: C16H16Cl2Cu2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:32717-95-6) here.

Asym. [4+3] annulations between isatin-derived Morita-Baylis-Hillman carbonates and two types of vinyl carbonates synergistically catalyzed by tertiary amines and transition metals, through chemoselective assemblies of in situ formed allylic ylides and metal-containing 1,4-dipoles were reported. A range of oxepane frameworks I [R1 = H, 5-Me, 5-Br, etc.; R2 = Me, Et; R3 = Me, allyl, Bn, etc.] and II [X = CF, CCH3, NH, etc.] were generally constructed in moderate to good yields with high stereocontrol. Moreover, all four diastereomers for the products bearing vicinal stereocenters were accessible by tuning tertiary amine and metal catalysts.

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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, Synthesis called Copper-catalyzed skeletal rearrangement of O-propargylic aryloximes into four-membered cyclic nitrones – chirality transfer and mechanistic insight, Author is Nakamura, Itaru; Kudo, Yu; Araki, Toshiharu; Zhang, Dong; Kwon, Eunsang; Terada, Masahiro, which mentions a compound: 32717-95-6, SMILESS is C12=C(CCC3=C4CC2)[Cu+]1534[Cl-][Cu+]678(C9=C6CCC7=C8CC9)[Cl-]5, Molecular C16H16Cl2Cu2, Formula: C16H16Cl2Cu2.

Cu-catalyzed skeletal rearrangement of (E)-configurated O-propargylic aryl oximes were carried out to afford the corresponding 4-membered cyclic nitrones in good to excellent yields. The optimal reaction conditions of the highly regioselective reactions involved the use of [CuCl(cod)]2 in MeCN at 70°. In the case of (Z)-configurated derivatives, however, the reaction proceeded in the absence of the Cu catalysts to afford the identical compound in good yields. Furthermore, the reactions were also carried out using chiral substrates in the presence of Cu catalysts to afford the corresponding products with good levels of chirality transfer.

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Reference:
Quinoxaline – Wikipedia,
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