Tag: M.W=100-200

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 Organoborane Acceptor-Substituted Polythiophene via Side-Group Borylation. Author is Li, Haiyan; Sundararaman, Anand; Venkatasubbaiah, Krishnan; Jaekle, Frieder.

Organoborane acceptor-modified polythiophene was prepared from silylated polythiophene via a new polymer modification strategy. The attachment of electron-deficient dimesitylboryl groups leads to a significant decrease of the LUMO levels as evidenced by a strong bathochromic shift in the UV-visible absorption and emission spectra and the observation of reversible reduction waves in the cyclic voltammogram at significantly less cathodic potentials than for the silylated precursor polymer. The modification of conjugated polymers with electron-deficient boryl groups provides a new design principle for the preparation of electronically interesting materials.

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

Mathieu, Didier; Defranceschi, Mireille; Lecayon, Gerard; Delhalle, Joseph published an article about the compound: 2-Methylglutaronitrile( cas:4553-62-2,SMILESS:N#CC(C)CCC#N ).Application of 4553-62-2. 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:4553-62-2) through the article.

RHF/3-21G vibrational frequencies and intensities are calculated for acrylonitrile dimers (S-2-methylglutaronitrile) and pentamers differing by their conformation and/or configuration to comprehend the influence of these 2 structural characteristics on the IR spectra of polyacrylonitrile chains. The isotactic pentamer tends to adopt a (TG)3 helix while for the syndiotactic configuration, 2 conformations of similar total energy are obtained. On the basis of these structures, it is found that the calculated IR spectra follow the reported exptl. trends. Of particular interest is the theor. verification of the exptl. observation made by M. Minagawa et al. (1988) that the intensity ratio between bands at 1230 and 1250 cm-1 depends on the stereochem. structure of polyacrylonitrile and provides a measure of their isotacticity percentage.

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

Reference of (2S)-(+)-3-Chloropropane-1,2-diol. 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: (2S)-(+)-3-Chloropropane-1,2-diol, is researched, Molecular C3H7ClO2, CAS is 60827-45-4, about Biodegradation of 3-Chloro-1,2-propanediol with Saccharomyces cerevisiae. Author is Bel-Rhlid, Rachid; Talmon, Jean P.; Fay, Laurent B.; Juillerat, Marcel A..

A novel enzymic dehalogenating activity of 3-chloro-1,2-propanediol (3-MCPD) with Saccharomyces cerevisiae (baker’s yeast) is reported. All bioconversion assays were carried out under aerobic conditions at 28°, and the kinetics were monitored. The biodegradation was performed at different pH values (6.2, 7.0, and 8.2), in the presence and absence of glucose, using racemic 3-MCPD at two different concentrations (7.3 μmol/L and 27 mmol/L). Optimal conversion (68%) of racemic (R,S)-3-MCPD at a concentration of 27 mmol/L was achieved after 48 h of reaction time, at pH 8.2, and in the presence of glucose. At a concentration of 7.3 μmol/L, 73% degradation was observed after 72 h, at pH 8.2 and in the absence of glucose. Under the same exptl. conditions, the conversion of pure (S)-3-MCPD (85%) was higher than that of the (R)-enantiomer (60%).

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

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.Nakamura, Tetsuji; Yu, Fujio; Mizunashi, Wataru; Watanabe, Ichiro researched the compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4 ).Application In Synthesis of (2S)-(+)-3-Chloropropane-1,2-diol.They published the article 《Microbial transformation of prochiral 1,3-dichloro-2-propanol into optically active 3-chloro-1,2-propanediol》 about this compound( cas:60827-45-4 ) in Agricultural and Biological Chemistry. Keywords: prochiral dichloropropanol transformation chloropropanediol bacteria. We’ll tell you more about this compound (cas:60827-45-4).

Nine strains of bacteria isolated from soil were able convert 1,3-dichloro-2-propanol (DCP) to optically active 3-chloro-1,2-propanediol (MCP). The reaction was almost stoichiometric and the optical purity was ∼67-75% e.e. for (R)-isomer of MCP. Only one strain produced (S)-isomer of MCP with 38.8% e.e.

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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, Green Chemistry called Potential impacts of deep-sea injection of CO2 on marine organic chemistry, Author is Hu, Ji; Malic, Nino; Scott, Janet L.; Strauss, Christopher R., the main research direction is deep sea injection carbon dioxide effect marine organic chem; carbon dioxide epoxide effect marine organic chem seawater injection.Category: iodides-buliding-blocks.

The extent of reaction of epoxides in salt water changed markedly following introduction of gaseous or liquid CO2. Higher concentrations of β-chlorohydrins in carbonated salt water vs. concentrations in salt water alone were attributed to greater acidity of the aqueous phase. This suggested regimes for sequestering CO2 by deep sea injection should account for potential effects on marine organic chem. No evidence was obtained for enhanced nucleophilicity of Cl- through potential desolvation at the CO2-water interface.

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

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: 75732-01-3, is researched, Molecular C9H11Cu, about Toward absolute asymmetric synthesis of coordination polymers with bidentate sulfide ligands, the main research direction is copper halo mesityl sulfide complex preparation crystal structure.Application of 75732-01-3.

In search for sulfide-containing coordination polymers that crystallize as conglomerates, five new copper(I) complexes with prochiral sulfide ligands were prepared and characterized by single crystal x-ray structure determination Three unsym. sulfides were used: Ph propargyl sulfide (Sprop), allyl Me sulfide (Sally), and 2,5-dithiahexane (SS). In [CuCl(Sprop)]n (1), layers are formed via π-coordination of propargyl groups to copper(I). In [Cu2Br2(Sprop)4] (2), discrete dimers form with non-coordinating propargyl groups. In [CuCl(Sally)]n (3), layers are formed via π-coordination of allyl groups to copper(I), but disordered Sally ligands are also found. The mesitylcopper complex [Cu4(Mes)4(Sally)2] (4) is chiral but discrete. In [Cu4(Mes)4(SS)]n (5), racemic chains are formed by the SS ligand. Three out of five complexes prepared thus form coordination polymers, and all of the five complexes (1-5) exhibit terminal sulfide ligands that could be oxidized selectively when incorporated in an enantiopure polymer. Unfortunately none of 1-5 crystallized as a conglomerate, but whether this reflects an inherent tendency in this system is too early to say.

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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: 2-Methylglutaronitrile(SMILESS: N#CC(C)CCC#N,cas:4553-62-2) is researched.Safety of 4-(Piperazin-1-yl)phenol. The article 《Microbial degradation of nitrile compounds. Part IV. Fungal degradation of triacrylonitrile》 in relation to this compound, is published in Agricultural and Biological Chemistry. Let’s take a look at the latest research on this compound (cas:4553-62-2).

Two fungal strains (TG-1 and TG-2) which utilized triacrylonitrile (I) as N source were isolated from soil and identified as Fusarium merismoides merismoides and F. solani solani, resp. F. merismoides TG-1 could utilize I, adiponitrile, glutaronitrile, diacrylonitrile, and 2,4-dicyano-1-butene as N sources. Conditions for cultivation of the strain were studied. Degradation products of I were a mixture of 5,7-dicyanoheptanoic acid (62%) and 4,7-dicyanoheptanoic acid (II) (38%). A mixture of 5,7-dicyanoheptanoic acid (11%) and II (89%) was also obtained from the culture broth of F. solani TG-2.

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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, Journal of Thermal Analysis and Calorimetry called Ab initio and DFT calculations of three-body interactions in chiral mixtures, Author is Fujisawa, M.; Kimura, T., which mentions a compound: 60827-45-4, SMILESS is OC[C@H](O)CCl, Molecular C3H7ClO2, Quality Control of (2S)-(+)-3-Chloropropane-1,2-diol.

In order to elucidate the enthalpic stabilization of a 2-methyl-1,4-butanediol system (2M14BD) and a 3-chloro-1,2-propanediol (3C12PDO) system by mixing of each (R)- and (S)-enantiomers, three-body interaction energies are obtained by PW91/6-311G** and MP2/6-311G** level calculations The differences between homochiral interactions and heterochiral interactions in a 3C12PDO system are found. On the other hand, in 2M14BD systems, very slight differences can be observed between the three-body interaction energies of the three ternary systems. Further, the relationship between excess enthalpies and chiral interactions is discussed.

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

COA of Formula: C6H8N2. 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: 2-Methylglutaronitrile, is researched, Molecular C6H8N2, CAS is 4553-62-2, about Optical recognition of alkyl nitrile by a homochiral iron(II) spin crossover host. Author is Qin, Long-Fang; Pang, Chun-Yan; Han, Wang-Kang; Zhang, Feng-Li; Tian, Lei; Gu, Zhi-Guo; Ren, Xuehong; Li, Zaijun.

A homochiral complex 1·MeCN (fac -Λ-[FeL3](ClO4)2·MeCN), where L = was synthesized by the multicomponent self-assembly of (R)-phenylethylamine, 1-methyl-2-imidazolecarboxaldehyde and iron(II) ions in acetonitrile solution X-ray crystallog. anal. revealed that complex 1·MeCN crystallized in the chiral space group P21. The octahedral coordination mononuclear [FeL3]2+ cations are stacked into a left-handed double helix supramol. structure along the a axis with uncoordinated acetonitrile mols. filling the helical channel. When 1·MeCN redissolved in racemic lactonitrile (LN) or methylglutaronitrile (MGN), the [FeL3]2+ cations can recognize one enantiomeric alkyl nitrile by forming 1·1/3(R)-LN or 1·1/3(S)-MGN crystals. 1·1/3(R)-LN and 1·1/3(S)-MGN crystallized in the P212121 space group, and the [FeL3]2+ cations are stacked in a triple helix mode with the enantiomeric alkyl nitrile captured in the helical channel. Magnetic measurement indicated that 1·MeCN displayed spin-crossover at 355 K, while the transition temperature became 220 K after desolvation. However, 1·1/3(R)-LN and 1·1/3(S)-MGN exhibited incomplete and reversible spin-crossover behaviors at ∼363 K. The mononuclear iron(II) complex could be used as a host for racemic alkyl nitrile separation, and the spin-crossover property was influenced by the process of chiral recognition.

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

Bomparola, Roberta; Davies, Robert P.; Hornaeur, Stefan; White, Andrew J. P. 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.

Li organoamidocuprates LiCuR(NR’2) are an important class of organocopper reagents and found widespread application in conjugate addition and other bond-forming reactions. The dependence of the structures and equilibrium of these species on the steric and electronic properties of the amido group is reported in both the solid state and in solution Three different cuprate complexes were crystallog. characterized: the organoamidocuprate [Cu2Li2Mes2TMP2] (2) (TMP = 2,2,6,6-tetramethylpiperidide) which is shown to adopt a head-to-tail conformation; [Cu2Li2(N(CH2Ph)CH2CH2NMe2)4] (3) which is a homoamidocuprate and contains addnl. coordination of the Li centers from intra-mol. tertiary amine groups; and the diastereomeric organoamidocuprate [Cu2Li2Mes2(N(R-CH(Ph)Me)(CH2CF3))2] (4) which adopts a head-to-head conformation. Complex 4 is unique in being the 1st crystallog. characterized example of a head-to-head isomer of a heterocuprate, and its structure also has implications for the use of scalemic amidocuprates in asym. induced conjugate addition The solution equilibrium of all new complexes also were studied using 7Li NMR spectroscopy, and in each case the species observed in the crystal structure was shown to also be the predominant isomer in solution

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