Month: March 2022

Category: iodides-buliding-blocks. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: (2S)-(+)-3-Chloropropane-1,2-diol, is researched, Molecular C3H7ClO2, CAS is 60827-45-4, about Solid Phase Behavior, Polymorphism, and Crystal Structure Features of Chiral Drug Metaxalone. Author is Bredikhin, Alexander A.; Zakharychev, Dmitry V.; Gubaidullin, Aidar T.; Bredikhina, Zemfira A..

In addition to the previously known A-rac and B-rac polymorphs of the chiral drug metaxalone 1, an enantiopure A-(S)-form was obtained and studied. According to x-ray anal., the crystalline organization of this form is close to the A-rac-1 polymorph. Crystallization of metaxalone melts is accompanied by the formation of a previously unknown metastable C-phase, which in the case of both racemic and enantiomeric samples are transformed into A-rac-1 or A-(S)-1. Anal. of the PXRD and IR spectra of crystalline samples revealed a similarity of the internal structure for the A-(S)-1, A-rac-1, C-(S)-1, and C-rac-1 crystalline forms and the essential difference of all of these phases from the B-rac-1 phase. According to the thermochem. data, the dependences of the change in the Gibbs free energy for all the phases studied are plotted in the interval from the m.p. to 20°. Under standard conditions, the crystalline modifications of metaxalone, relative to ΔG0, form such a series: B-rac-1 < A-(S)-1 ≈ A-rac-1 < C-rac-1 < C-(S)-1. A model that describes all the exptl. revealed features of metaxalone crystallization is proposed. If you want to learn more about this compound((2S)-(+)-3-Chloropropane-1,2-diol)Category: iodides-buliding-blocks, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(60827-45-4).

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

Electric Literature of C9H11Cu. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. 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. Author is Panetti, Grace B.; Robinson, Jerome R.; Carroll, Patrick J.; Gau, Michael R.; Manor, Brain C.; Walsh, Patrick J.; Schelter, Eric J..

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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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.Suzuki, Toshio; Kasai, Naoya 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 《A novel method for the generation of (R)- and (S)-3-chloro-1,2-propanediol by stereospecific dehalogenating bacteria and their use in the preparation of (R)- and (S)-glycidol》 about this compound( cas:60827-45-4 ) in Bioorganic & Medicinal Chemistry Letters. Keywords: resolution chloropropandiol stereospecific dehalogenating bacteria; glycidol. We’ll tell you more about this compound (cas:60827-45-4).

A novel and effective method for the preparation of highly pure optically active (R)- and (S)-3-chloro-1,2-propanediol (99.5% ee and 99.4% ee, resp.) was established based on stereospecific dehalogenation and assimilation with bacteria. From these intermediates highly pure optically active (R)- and (S)-glycidol (99.3% ee and 99.4% ee, resp.) were prepared

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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, Engineering in Life Sciences called Biosynthesis of (R)-epichlorohydrin at high substrate concentration by kinetic resolution of racemic epichlorohydrin with a recombinant epoxide hydrolase, Author is Jin, Huo-Xi; Liu, Zhi-Qiang; Hu, Zhong-Ce; Zheng, Yu-Guo, which mentions a compound: 60827-45-4, SMILESS is OC[C@H](O)CCl, Molecular C3H7ClO2, Safety of (2S)-(+)-3-Chloropropane-1,2-diol.

The substrate concentration and yield were shown to be very low in the production of (R)-epichlorohydrin by hydrolysis of racemic epichlorohydrin using epoxide hydrolases in previous studies. In this work, we synthesized an epoxide hydrolase gene from Agrobacterium radiobacter and expressed it in Escherichia coli by the PCR assembly method. The recombinant A. radiobacter epoxide hydrolase (ArEH) was applied in the preparation of (R)-epichlorohydrin and, a yield of 42.7% with ≥99% enantiomeric excess (ee) from 25.6 mM racemic epichlorohydrin was obtained. However, the ee of (R)-epichlorohydrin was not able to reach 99% due to substrate and product inhibition when the substrate concentration was over 320 mM. Inhibition studies revealed that (S)-3-chloro-1,2-propanediol displayed non-competitive inhibition in the conversion of (S)-epichlorohydrin but non-significant inhibition for (R)-epichlorohydrin. Moreover, ArEH was successfully applied in the preparation of (R)-epichlorohydrin at high substrate concentration by eliminating the substrate inhibition. The substrate concentration increased to 448 mM by intermittent feeding of the substrate and to 512 mM by using a two-phase reaction system, with a high yield (>27%) and ee (>98%) of (R)-epichlorohydrin. This is the first report of high-yield production of (R)-epichlorohydrin at high substrate concentration, laying the foundations for its application on the industrial scale.

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

Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II). 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: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Inductive and electrostatic effects on cobalt porphyrins for heterogeneous electrocatalytic carbon dioxide reduction. Author is Zhu, Minghui; Yang, Deng-Tao; Ye, Ruquan; Zeng, Joy; Corbin, Nathan; Manthiram, Karthish.

Electrochem. carbon dioxide reduction enables conversion of carbon dioxide into fuels and chems. with renewable energy input. Cobalt-based mol. complexes have exhibited high selectivity, activity, and stability for transforming carbon dioxide into carbon monoxide. Through evaluating immobilized cobalt porphyrins functionalized with various peripheral substituents, we demonstrated that their activity is affected not only by the electronegativity of the substituents, but importantly, also by the charge of the substituents. The performance of immobilized cobalt porphyrins can be improved by introducing electron-donating and pos. charged functional groups. Through kinetic studies, we were able to understand the mechanism by which electron-donating groups enhance the observed rates of carbon dioxide reduction and how cationic functionality may contribute towards electrostatic stabilization of the intermediate formed in the rate-determining step. Our methodol. provides a robust and exptl.-verified method of computationally predicting the electronic effect of peripheral substitution and hence the catalytic activity of substituted porphyrins.

If you want to learn more about this compound(5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II))Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(28903-71-1).

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 bimetallic nanoparticles in ionic liquids: Chemical routes vs physical vapor deposition.Computed Properties of C9H11Cu.

Ionic liquids (ILs) can be used to generate and stabilize metallic nanoparticles (MNPs) by several phys. and chem. routes. Here, the simultaneous decomposition of Ru and Cu organometallic precursors in IL is shown to yield core-shell Ru@CuNPs with smaller diameters and narrower size distributions than the corresponding monometallic NPs, in a broad range of Ru:Cu compositions They are probably formed by rapid nucleation of Ru cores followed by decomposition of the Cu precursor on their surface. This effect forces the formation of a bimetallic structure that does not form with the use of purely phys. processes such as PVD. These Cu, Ru, and Ru@CuNPs could be used for the formation of seed and barrier layers for the metalization of advanced interconnect structures.

If you want to learn more about this compound(Mesitylcopper(I))Computed Properties of C9H11Cu, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(75732-01-3).

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 Catalytic enantioselective synthesis of 2-(2-hydroxyethyl)indole scaffolds via consecutive intramolecular amido-cupration of allenes and asymmetric addition of carbonyl compounds.Recommanded Product: 75732-01-3.

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

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: (2S)-(+)-3-Chloropropane-1,2-diol, is researched, Molecular C3H7ClO2, CAS is 60827-45-4, about Inhibition of glycolysis in boar spermatozoa by α-chlorohydrin phosphate appears to be mediated by phosphatase activity, the main research direction is pig sperm glycolysis chlorohydrin phosphate phosphatase.Reference of (2S)-(+)-3-Chloropropane-1,2-diol.

(R,S)-α-chlorohydrin-1-phosphate, previously shown to have no anti-glycolytic activity on mature boar sperm in vitro, is a substrate for acid and/or neutral phosphatase(s) that are associated with washed sperm. The high phosphatase activity hydrolyses the ester to α-chlorohydrin which undergoes oxidation to (S)-3-chlorolactaldehyde, a specific inhibitor of sperm glyceraldehyde-3-phosphate dehydrogenase and triosephosphate isomerase, thereby exhibiting an anti-glycolytic action.

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

Davies, Robert P.; Hornauer, Stefan; White, Andrew J. P. published the article 《Models for the reactive states of homocuprates: syntheses, structures and reactivities of [Cu2Li2Mes4] and [Cu3LiMes4]》. Keywords: copper lithium tetranuclear mesityl metallacycle preparation structure; crystal structure copper lithium tetranuclear mesityl metallacycle; mol structure copper lithium tetranuclear mesityl metallacycle; enone regioselective addition reaction copper lithium mesityl metallacycle promotion; DFT structure copper lithium tetranuclear mesityl metallacycle.They researched the compound: Mesitylcopper(I)( cas:75732-01-3 ).Recommanded Product: 75732-01-3. 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.

The synthesis and characterization (including x-ray crystallog.) of two novel tetranuclear and thermally-stable Li arylcuprates, [Cu2Li2Mes4] and [Cu3LiMes4], are reported. [Cu3LiMes4] is a highly active regioselective promoter for the 1,4-addition of organolithiums to enones (e.g. ≤96% conversion of cyclohex-2-enone to 3-butylcyclohexanone). DFT studies of 3 isomeric forms of [Cu2Li2Mes4] are reported.

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

Recommanded Product: 28903-71-1. 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: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Pyrolyzed Co-Nx/C electrocatalysts supported on different carbon materials for oxygen reduction reaction in neutral solution. Author is Zhang, Lei; Ye, Daixin; Huang, Qiu-An; Zhao, Hongbin; Shao, Qinsi; Zhang, Jiujun.

In this work, a non-noble metal material, i.e., 5, 10, 15, 20-Tetrakis(4-methoxyphenyl)-21H, 23H-porphine cobalt(II) (CoTMPP), is chosen as the metal complex which adsorbs on three different carbon support materials, namely, black pearls 2000 (BP), ordered mesoporous carbon (MPC) and single layer graphene oxide (GO), to form CoTMPP/BP, CoTMPP/MPC, and CoTMPP/GO catalyst precursors, resp. These precursors are heat-treated at high temperatures to form Co-Nx/BP, Co-Nx/MPC, and Co-Nx/GO catalysts for ORR in neutral electrolyte solution, resp. Several characterization methods including XRD, SEM/TEM and XPS are employed. Electrochem. methods such as cyclic voltammetry (CV), rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) techniques are used to quant. measure the catalyzed ORR kinetic parameters. Effects of both carbon supports and heat-treatment temperature on the catalyst phys. properties and catalytic ORR activities were also studied. Regarding the catalytic ORR activity, the activity order was measured as: Co-Nx/BP > Co-Nx/MPC > Co-Nx/GO. The overall electron transfer number catalyzed by Co-Nx/BP is measured to be 4, while those by Co-Nx/MPC and Co-Nx/GO catalysts are 2-electron transfer pathways. Based on these measurements and our anal., an ORR mechanism is also proposed for facilitating further investigation and understanding.

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