Tag: M.W=100-200

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Structural Snapshots of a Flexible Cu2P2 Core that Accommodates the Oxidation States CuICuI, Cu1.5Cu1.5, and CuIICuII, the main research direction is copper phosphido dinuclear preparation structure electrochem oxidation luminescence; crystal structure copper dinuclear phosphinophenylphosphido complex.COA of Formula: C9H11Cu.

The phosphido-bridged dicopper(I) complex {(PPP)Cu}2 was synthesized and structurally characterized ([PPP]- = bis(2-diisopropylphosphinophenyl)phosphide). Cyclic voltammetry of {(PPP)Cu}2 in THF shows fully reversible oxidations at -1.02 V (Cu1.5Cu1.5/CuICuI) and -0.423 V (CuIICuII/Cu1.5Cu1.5). Chem. oxidation of {(PPP)Cu}2 by one electron yields the class III mixed-valence species [{(PPP)Cu}2]+ (EPR, UV-visible). Structural data establish an unexpectedly large change (0.538 Å) in the Cu···Cu distance upon oxidation state. Oxidation of {(PPP)Cu}2 by two electrons yields the dication [{(PPP)Cu}2]2+, an antiferromagnetically coupled dicopper(II) complex. Maintenance of a pseudotetrahedral geometry that is midway between a square plane and an ideal tetrahedron at the copper centers, along with a high degree of flexibility at the phosphide hinges, allows for efficient access to CuICuI, Cu1.5Cu1.5, and CuIICuII redox states without the need for ligand exchange, substitution, or redistribution processes.

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

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: 60827-45-4, is researched, SMILESS is OC[C@H](O)CCl, Molecular C3H7ClO2Journal, Tetrahedron: Asymmetry called Solid state properties and effective resolution procedure for guaifenesin, 3-(2-methoxyphenoxy)-1,2-propanediol, Author is Bredikhina, Zemfira A.; Novikova, Victorina G.; Zakharychev, Dmitry V.; Bredikhin, Alexander A., the main research direction is guaifenesin enantiomer resolution.Application In Synthesis of (2S)-(+)-3-Chloropropane-1,2-diol.

Racemic expectorant guaifenesin, 3-(2-methoxyphenoxy)-1,2-propanediol (2) undergoes spontaneous resolution upon crystallization This fact is confirmed by thermal anal. (single eutectic V-shape binary melting phase diagram, adequate entropy and free energy characteristics). Racemic 2 could be effectively resolved into (S)- and (R)-2 by a preferential crystallization procedure. Single enantiomer drugs levomoprolol and levotensin were obtained by starting from enantiomeric 2 through the sulfite route.

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

Reference of 2-Methylglutaronitrile. 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: 2-Methylglutaronitrile, is researched, Molecular C6H8N2, CAS is 4553-62-2, about Optimization of an immobilized-cell biocatalyst for production of 4-cyanopentanoic acid.

Optimization of microbial cell immobilization, catalyst specific activity, and volumetric productivity were required for scale-up of the nitrilase-catalyzed hydrolysis of 2-methylglutaronitrile to 4-cyanopentanoic acid, an intermediate in the preparation of 1,5-dimethyl-2-piperidone. As an alternative to the immobilization of Acidovorax facilis 72W cells in carrageenan, immobilization in alginate, followed by crosslinking with glutaraldehyde and polyethylenimine, produced a catalyst which was stable in reaction mixtures containing high concentrations of 4-cyanopentanoic acid ammonium salt. Immobilization in alginate produced catalysts with a higher nitrilase specific activity than was achieved in carrageenan, and volumetric productivity of 4-cyanopentanoic acid was increased from 19 to 49 g/L-h. Substituting alginate for carrageenan also eliminated 1 process step in the immobilization. A further increase in volumetric productivity to 79 g/L-h was achieved by using an immobilized Escherichia coli transformant which expresses A. facilis 72W nitrilase.

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

Borup, Bjoern; Huffman, John C.; Caulton, Kenneth G. published an article about the compound: Mesitylcopper(I)( cas:75732-01-3,SMILESS:[Cu]C1=C(C)C=C(C)C=C1C ).Related Products of 75732-01-3. 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:75732-01-3) through the article.

Reaction of Cu(I) mesityl with [Ba(OtBu)2(tBuOH)2]4 occurs with replacement of all protons by Cu to give an insoluble solid of empirical formula BaCu2(OtBu)4. This reacts with Et3PO to give a soluble product characterized by spectroscopic, combustion anal., and x-ray diffraction as (Et3PO)2Ba2Cu4(OtBu)8, an elongated octahedron (trans Ba2) with OtBu groups doubly bridging eight edges. The phosphine oxide has broken up an apparent polymer by coordination of one Et3PO to each Ba.

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

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Mesitylcopper(I)( cas:75732-01-3 ) is researched.Electric Literature of C9H11Cu.Leoni, Piero; Pasquali, Marco published the article 《Insertion of formaldehyde into a copper-carbon bond》 about this compound( cas:75732-01-3 ) in Journal of Organometallic Chemistry. Keywords: formaldehyde insertion copper carbon bond; mesitylcopper insertion formaldehyde. Let’s learn more about this compound (cas:75732-01-3).

Upon mixing equimolar amounts of mesitylcopper(I), CuAr, (Ar = 2,4,6-trimethylphenyl) and polymeric formaldehyde in THF in the presence of PPh3 the formaldehyde quickly dissolves. Gas-chromatog. anal. of the products after hydrolytic workup reveals the presence of mesityl alc., ArCH2OH (60% yield), the expected product of direct insertion of formaldehyde into a mesityl-copper bond. When the reaction is carried on for several days, 2,4,6-trimethylbenzyl formate and Me formate are the main products.

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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 Mesitylcopper – a powerful tool in synthetic chemistry.Application In Synthesis of Mesitylcopper(I).

A review. Since its first report in 1981, mesitylcopper has become an extremely popular and useful reagent, with many new applications emerging during the past decade. This review summarizes its structural and spectroscopic properties and gives a brief overview of the multitude of fascinating compounds and reactions that have been discovered by using mesitylcopper. Specifically, the role of mesitylcopper in synthesizing oligonuclear homo- and heteroleptic copper(I) frameworks, including biorelevant copper(I) complexes, and the application of mesitylcopper in stoichiometric and catalytic C-C and C-heteroatom bond-forming reactions and as a precursor for nanoparticles and intermetallic phases are covered.

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

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, Non-U.S. Gov’t, Organic Letters called Anti-Selective Direct Catalytic Asymmetric Aldol Reaction of Thiolactams, Author is Sureshkumar, Devarajulu; Kawato, Yuji; Iwata, Mitsutaka; Kumagai, Naoya; Shibasaki, Masakatsu, which mentions a compound: 75732-01-3, SMILESS is [Cu]C1=C(C)C=C(C)C=C1C, Molecular C9H11Cu, Product Details of 75732-01-3.

An anti-selective direct catalytic asym. aldol reaction of thiolactams is described. A soft Lewis acid/hard Bronsted base cooperative catalyst comprised of mesitylcopper/(R,R)-Ph-BPE exhibited high catalytic performance to produce an anti-aldol product with high stereoselectivity. The highly chemoselective nature of the present catalysis allows for the use of enolizable aldehydes as aldol acceptors. The diverse transformations of the thiolactam moiety highlight the synthetic utility of the present anti-aldol protocol.

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

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 Heterometallic Fluoroalkoxides of Barium and Copper(I). Syntheses and Structures of [(Me3NO)2Ba2Cu4(TFTB)8] and [(THF)2Ba2Cu2(HFTB)6], published in 1997-10-22, which mentions a compound: 75732-01-3, Name is Mesitylcopper(I), Molecular C9H11Cu, HPLC of Formula: 75732-01-3.

Reaction of HORF and in situ synthesized [Ba(ORF)2] (from Ba[N(SiMe3)2]2(THF)2 and HORF) with CuMes yields, in THF, [(THF)2Ba2Cu2(OCMe(CF3)2)6] (1). In the case of HORF = HOCMe2CF3, only upon addition of Me3NO is a soluble product obtained: [(Me3NO)2Ba2Cu4(OCMe2CF3)8] (2). 1 And 2 were characterized by x-ray crystallog. (1: triclinic, space group P1̅, R = 0.0557; 2: monoclinic, space group C2/c, R = 0.0643). 1 Has a square-planar Ba2Cu2O4 core structure with two addnl. alkoxides bridging the two bariums, giving the barium a tbp coordination environment. The structure of 2 is markedly different in that it has one more Cu-(OR) unit inserted into the Ba-(OR)-Ba unit. This gives the Ba2Cu4 core structure the shape of an octahedron and barium a square-pyramidal coordination environment. These structures are compared and contrasted with the structures of [Ba2Cu4(OCEt3)8], [(Et3PO)2Ba2Cu4(OtBu)8], and [(Me3NO)2Ba2Cu4(OtBu)8].

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

Quality Control of 2-Methylglutaronitrile. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2-Methylglutaronitrile, is researched, Molecular C6H8N2, CAS is 4553-62-2, about Enhancing selectivity and efficiency in the electrochemical synthesis of adiponitrile. Author is Blanco, Daniela E.; Dookhith, Aaliyah Z.; Modestino, Miguel A..

Adiponitrile is a large scale chem. intermediate used in the production of Nylon 6,6. It is primarily produced via two methods: the thermal hydrocyanation of butadiene and the electrochem. hydrodimerization of acrylonitrile. The thermochem. method is an energy intensive process that involves acutely toxic reactants such as hydrogen cyanide. On the other hand, the electrosynthesis of adiponitrile is a green chem. process that uses water-based electrolytes and can be directly coupled with renewable electricity sources such as wind or sunlight. Although this process is the largest organic electrochem. process in industry, it still faces many challenges owing to its low energy conversion efficiency and selectivity. Using a systematic approach, this study provides insights into mass transport and kinetic factors that influence the reaction performance, and demonstrates that by careful control of the composition of the electrolyte, concentration of reactants, operating current densities, and temperature, selectivities as high as 83% can be achieved. Our results provide electrochem. engineering guidelines to significantly improve the efficiency of the electrochem. production of adiponitrile and open up opportunities to the direct implementation of renewable-energy sources in chem. manufacturing

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

Electric Literature of C9H11Cu. 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 Ru-core/Cu-shell bimetallic nanoparticles with controlled size formed in one-pot synthesis. Author is Helgadottir, I.; Freychet, G.; Arquilliere, P.; Maret, M.; Gergaud, P.; Haumesser, P. H.; Santini, C. C..

Suspensions of bimetallic nanoparticles (NPs) of Ru and Cu have been synthesized by simultaneous decomposition of two organometallic compounds in an ionic liquid These suspensions have been characterized by Anomalous Small-Angle X-ray Scattering (ASAXS) at energies slightly below the Ru K-edge. It is found that the NPs adopt a Ru-core, a Cu-shell structure, with a constant Ru core diameter of 1.9 nm for all Ru : Cu compositions, while the Cu shell thickness increases with Cu content up to 0.9 nm. The formation of RuCuNPs thus proceeds through rapid decomposition of the Ru precursor into RuNPs of constant size followed by the reaction of the Cu precursor and agglomeration as a Cu shell. Thus, the different decomposition kinetics of precursors make possible the elaboration of core-shell NPs composed of two metals without chem. affinity.

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