Tag: M.W=100-200

Name: Mesitylcopper(I). The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about In situ Catalytic Generation of Allylcopper Species for Asymmetric Allylation: Toward 1H-Isochromene Skeletons. Author is Kawai, Junya; Chikkade, Prasanna Kumara; Shimizu, Yohei; Kanai, Motomu.

Allylcopper species can be generated in situ via catalytic intramol. oxycupration of allenic alc. The allylcopper can react with various aldehydes and a ketone to give 1H-isochromene derivatives enantioselectively. The protocol is atom-economical, highly regioselective, stereoconvergent, and tolerant to free OH groups. Thus, e.g., enantio- and regioselective oxycupration/asym. addition cascade reaction of allenic alc. I with benzaldehyde in presence of mesitylcopper and chiral diphosphine ligand in HMPA/THF afforded isochromene II (98% yield, 92% ee).

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Heilmann, Julia B.; Scheibitz, Matthias; Qin, Yang; Sundararaman, Anand; Jaekle, Frieder; Kretz, Tonia; Bolte, Michael; Lerner, Hans-Wolfram; Holthausen, Max C.; Wagner, Matthias published the article 《A synthetic route to borylene-bridged poly(ferrocenylene)s》. Keywords: review borylene bridged polyferrocenylene preparation.They researched the compound: Mesitylcopper(I)( cas:75732-01-3 ).Electric Literature of C9H11Cu. 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:75732-01-3) here.

A review on synthesis of soluble ferrocene-containing polymer. Iron chains: The highly soluble, ferrocene-containing polymer [-fc-B(Mes)-]n (fc = Fe(C5H4)2, Mes = mesityl), with an average chain length of about 16 repeat units (n = 16), is readily accessible by a novel polycondensation reaction starting from fc(BBr2)2 and HSiEt3. The polymer contains three-coordinate boron centers, which are well-suited for the promotion of electron delocalization along the polymer chain.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Synthetic Route of C9H11Cu. 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: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Copper(I) alkoxides: preparation and structural characterisation of triphenylmethoxocopper(I) and of an octanuclear form of t-butoxocopper(I).

Two Cu(I) alkoxides, the novel compound triphenylmethoxocopper(I) and an octanuclear form of t-butoxocopper(I), were prepared from mesitylcopper(I) and the relevant alc. [Cu4(OCPh3)4]·2C6H5CH3 (1) and [Cu8(OtBu)8] (2) were characterized by crystal structure determination Compound 1 contains two crystallog. independent triphenylmethoxocopper(I) mols., each with a planar Cu4 core. The Cu4O4 unit is butterfly-shaped with the O ligands situated alternately ∼0.4 A above and below the plane through the Cu atoms, and the triphenylmethyl groups spread out over both sides of the Cu4O4 core. The Cu(I) centers are two-coordinated with distances of 1.83(1)-1.86(1) A and O-Cu-O angles of 169.4(5)°. [Cu8(OtBu)8] (2) can be described as being composed of two approx. planar Cu4O4 cores, each with the t-Bu groups bent away in the same direction from the Cu4O4 plane. These units are related to one another by a center of symmetry and with weak Cu-O interactions of 2.493(5) and 2.536(5) A, involving four of the eight coppers, thus yielding an octanuclear Cu8O8 core. These four Cu(I) centers thus attain T-shaped three-coordination by O, whereas the remaining four are approx. linearly coordinated. The short Cu-O bond lengths in 2 range from 1.844(5) to 1.888(5) A.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Mesitylcopper(I)(SMILESS: [Cu]C1=C(C)C=C(C)C=C1C,cas:75732-01-3) is researched.Quality Control of 2,4-Dimethyl-1H-pyrrole. The article 《Bimetallic Ru-Cu Nanoparticles Synthesized in Ionic Liquids: Kinetically Controlled Size and Structure》 in relation to this compound, is published in Topics in Catalysis. Let’s take a look at the latest research on this compound (cas:75732-01-3).

The authors report a new synthesis of size-controlled bimetallic Ru-Cu nanoparticles (NPs) in ionic liquids using two organometallic precursors. Enough, upon mixing ruthenium and copper precursors, smaller bimetallic NPs (1.9-2.8 nm) are formed as compared to single metals (Cu: 5 nm; Ru: 4 nm) in a large range of copper molar fractions (χCu = 0.005-0.91). Surface and microscopy techniques evidence that NPs have metallic copper on the surface and crystalline hcp. metallic ruthenium core. This structure is further assessed by the catalytic activity of the bimetallic NPs, showing that conversion of benzene in cyclohexane is reduced with increasing χCu.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Application of 75732-01-3. 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: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Catalytic enantioselective synthesis of 2-(2-hydroxyethyl)indole scaffolds via consecutive intramolecular amido-cupration of allenes and asymmetric addition of carbonyl compounds. Author is Chikkade, Prasanna Kumara; Shimizu, Yohei; Kanai, Motomu.

A catalytic enantioselective method for the synthesis of 2-(2-hydroxyethyl)indole scaffolds was developed. The process included catalytic intramol. amido-cupration of an allene to generate a novel allylcopper species, followed by asym. addition of the thus-generated chiral nucleophile to aldehydes and ketones. This was the first example of catalytic indole formation coupled with asym. C-C bond formation via in situ generation of a reactive chiral allylcopper species.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Reference of Mesitylcopper(I). 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: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Cyclo-Tetrakis(μ-2,4,6-trimethylphenyl-κC1:κC1)bis(trimethylphosphane)-1κP,3κP-tetracopper(I). Author is Liebing, Phil; Merzweiler, Kurt.

The title compound, [Cu4(C9H11)4(C3H9P)2] or [Cu4(Mes)4(PMe3)2] (Mes = 2,4,6-trimethylphenyl), was synthesized from copper(I) mesityl and trimethylphosphane in THF as solvent. The mol. structure of the complex has C2 symmetry and consists of four copper(I) atoms bridged by four μ-mesityl groups, giving an eight-membered puckered {Cu4C4} ring. Addnl., two copper(I) atoms at opposite corners of the Cu4 rhomb are each linked to a terminal PMe3 ligand. The PMe3-bearing copper(I) atoms exhibit a distorted trigonal-planar coordination mode whereas the remaining Cu atoms linked to two mesityl groups are nearly linearly coordinated.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Related Products of 60827-45-4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (2S)-(+)-3-Chloropropane-1,2-diol, is researched, Molecular C3H7ClO2, CAS is 60827-45-4, about Production of (S)-3-chlorolactaldehyde from (S)-α-chlorohydrin by boar spermatozoa and the inhibition of glyceraldehyde 3-phosphate dehydrogenase in vitro. Author is Stevenson, D.; Jones, A. R..

The male antifertility agent (S)-α-chlorohydrin  [60827-45-4] was metabolized by mature boar spermatozoa in vitro to (S)-3-chlorolactaldehyde  [86747-03-7]. This oxidative process, which did not occur when (R)-α-chlorohydrin was offered as a substrate, was catalyzed by an NADP-dependent dehydrogenase that converts glycerol  [56-81-5] to glyceraldehyde. (S)-3-Chlorolactaldehyde, produced by this metabolic reaction or when added to suspensions of boar spermatozoa, was a specific inhibitor of glyceraldehyde 3-phosphate dehydrogenase  [9028-92-6] as assessed by the accumulation of fructose 1,6-diphosphate and the triose phosphates. When glycerol and (S)-α-chlorohydrin were added concomitantly to boar spermatozoa in vitro, the presence of glycerol decreased the degree of inhibition of glyceraldehyde 3-phosphate dehydrogenase. Extracts of glyceraldehyde 3-phosphate dehydrogenase that were obtained from boar spermatozoa incubated with (S)-α-chlorohydrin or (R,S)-3-chlorolactaldehyde  [84709-24-0] showed significant reductions in their enzymic activity.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Category: iodides-buliding-blocks. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Direct Catalytic Asymmetric Aldol Reaction of an α-Azido Amide. Author is Weidner, Karin; Sun, Zhongdong; Kumagai, Naoya; Shibasaki, Masakatsu.

α-Azido 7-azaindolinylamide I underwent diastereoselective and enantioselective aldol additions to ortho-substituted aryl aldehydes 2-RC6H4CHO (R = F3C, Br, I, O2N, PhCC, F) in the presence of mesitylcopper and either a nonracemic bis(diphenylphospholanyl)ethane or a nonracemic bis(diarylphosphino)binaphthalene ligand to yield either nonracemic syn- or anti-α-azido-β-hydroxy acyl 7-azaindolinylamides such as II (R = F3C, Br, I, O2N, PhCC, F; R1 = N3, H; R2 = H, N3) in 74-98% yields, 53:47->98:2 dr, and 89-99% ee. Aromatic aldehydes lacking ortho substituents underwent diastereoselective and enantioselective aldol addition reactions with I to yield syn-α-azido-β-hydroxy amides only. Alkynals underwent diastereoselective and enantioselective aldol addition reactions with I to yield anti-α-azido-β-hydroxy amides; aldol addition of I to hydrocinnamaldehyde gave product with no diastereo- or enantioselectivity. II (R = F3C; R1 = N3; R2 = H) was converted to the corresponding nonracemic α-azido-β-hydroxy carboxylic acid and Me carboxylate and to a nonracemic 3-aryl-2-aziridinecarboxylic acid; the 7-azaindoline byproduct could be recovered. The structures of II (R = F3C, PhCC; R1 = N3; R2 = H), an aziridine derived from II (R = F3C; R1 = N3; R2 = H), and the tert-Bu carbonate ester of a racemic anti-α-azido-β-hydroxy 7-azaindolinylamide derived from 3-(4-fluorophenyl)-2-propynal were determined by X-ray crystallog.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Recommanded Product: Mesitylcopper(I). The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Copper/α-Ketocarboxylate Chemistry With Supporting Peralkylated Diamines: Reactivity of Copper(I) Complexes and Dicopper-Oxygen Intermediates. Author is Gupta, Aalo K.; Tolman, William B..

To further understand Cu-promoted oxidation reactions, the Cu(I) complexes LCuX (L = N,N’-di-tert-butyl-N,N’-dimethylethylenediamine; X = benzoylformate (BF) or p-nitro-benzoylformate) were synthesized, fully characterized by x-ray crystallog. and spectroscopy in solution, and their reactivity with O2 at -80° examined Oxidative decarboxylation of the α-ketocarboxylate ligand was observed, but only to a significant extent when cyclohexene, cyclooctene, or MeCN was present. Spectroscopic and conductivity data are consistent with mechanistic postulates involving displacement of the α-ketocarboxylate by the additives to a small extent, followed by oxygenation of the LCu(I) moiety to yield Cu-O species that subsequently induce decarboxylation. To test these hypotheses, spectroscopic and kinetic studies of the reactions of Bu4NBF with preformed μ-η2:η2-peroxodicopper(II) and/or bis(μ-oxo)dicopper(III) complexes supported by L or N,N,N’,N’-tetramethylpropylenediamine were performed. In an illustration of a new mode of reactivity for such dicopper-O cores, decarboxylation of the added α-ketocarboxylate was observed and the intermediacy of a carboxylate-bridged μ-η2:η2-peroxodicopper(II) complex was implicated.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

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: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Synthesis of novel copper-rare earth BINOLate frameworks from a hydrogen bonding DBU-H rare earth BINOLate complex.Safety of Mesitylcopper(I).

The preparation of a novel H-bonding DBU-H+ BINOLate Rare Earth Metal complex [RE(S-binol)3·3DBU-H, where RE = La, Pr, and Eu; DBU = 1,8-Diazabicyclo(5.4.0)undec-7-ene] enabled the synthesis of the first copper-Rare Earth Metal BINOLate complex (CuDBU-REMB, Cu3RE(S-binol)3(DBU)3). CuDBU-REMB was compared to the analogous Li complex using x-ray crystallog. and Exchange NMR spectroscopy (EXSY). The results provide insight into the role of the secondary metal cation in the framework’s stabilization.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com