Month: April 2022

Synthetic Route of C11H23Br. 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: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Monodisperse micelles composed of poly(ethylene glycol) attached surfactants: platonic nature in a macromolecular aggregate. Author is Lee, Ji Ha; Matsumoto, Hayata; Fujii, Shota; Takahashi, Rintaro; Sakurai, Kazuo.

Among the many studies on micelles, dating back more than 100 years, we first found a series of monodisperse micelles: spherical micelles made from calix[4]arene surfactants exhibited monodispersity in aggregation number (Nagg) with values of 4, 6, 8, 12, and 20. We named these Platonic micelles because these values coincided with the face numbers of the Platonic solids. The preferred Nagg values were explained in relation to the math. Tammes problem: how to obtain the best coverage of a sphere surface with multiple identical circles. In this paper, we synthesized poly(ethylene glycol)-attached surfactants and carried out small-angle X-ray scattering (SAXS) and anal. ultracentrifugation (AUC) to determine the Nagg. We found that these polymeric surfactants also formed monodispersed micelles and Nagg discontinuously increased from 20 to 24, and then 32 with increasing the alkyl carbon numbers from 9 to 11 continuously. The determined Nagg was greater than 20 and the Platonic solid numbers We assumed that the preferred Nagg values could be explained in relation to the Tammes problem as well.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

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: 693-67-4, is researched, Molecular C11H23Br, about Anodic Oxidation of Dithiane Carboxylic Acids: A Rapid and Mild Way to Access Functionalized Orthoesters, the main research direction is dithianecarboxylic acid alc electrochem oxidation orthoesterification green chem; ortho ester preparation.Electric Literature of C11H23Br.

A new electrochem. methodol. has been developed for the preparation of a wide variety of functionalized orthoesters under mild and green conditions from easily accessible dithiane derivatives The new methodol. also offers an unprecedented way to access tri(fluorinated) orthoesters, a class of compound that has never been studied before. This provides the community with a rapid and general method to prepare libraries of functionalized orthoesters from simple and readily available starting materials.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Electric Literature of C10H10Cl2N2Pt. 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: cis-Dichlorobis(pyridine)platinum(II), is researched, Molecular C10H10Cl2N2Pt, CAS is 15227-42-6, about Research at ICI Central Petrochemical and Polymer Laboratory, Runcorn Heath. NQR spectrometry. Author is Fryer, C. W..

The use of 35Cl nuclear quadrupole resonance (NQR) in the study of transition metal compounds is discussed. In the NQR spectra of cis-and trans-L2PtCl2, the difference in the 35Cl NQR frequencies (νtrans-νcis) increases 0.95, 1.98, 3.1 MHz, for L = Me2NH, pyridine, and Bu3P, resp. Frequency variation is greater among the trans compounds Charge donating properties of L to Pt have a larger effect on the ν 35 Cl attached to the Pt than does the weakening influence of L. The 35Clν for bridging Cl in trans-L2Pt2Cl4 and trans-L2Pd2Cl4 are much lower (at 15.46 and 12.84 MHz, resp.) than the frequencies of the terminal Cl(at 22.36 and 19.56 MHz). This difference can be used in studying cluster compounds

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Pazderski, Leszek; Szlyk, Edward; Sitkowski, Jerzy; Kamienski, Bohdan; Kozerski, Lech; Tousek, Jaromir; Marek, Radek published the article 《Experimental and quantum-chemical studies of 15N NMR coordination shifts in palladium and platinum chloride complexes with pyridine, 2,2′-bipyridine and 1,10-phenanthroline》. Keywords: palladium platinum pyridine bipyridine phenanthroline complex NMR chem shift.They researched the compound: cis-Dichlorobis(pyridine)platinum(II)( cas:15227-42-6 ).SDS of cas: 15227-42-6. 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:15227-42-6) here.

Pd and Pt chloride complexes with pyridine (py),2,2′-bipyridine (bpy) and 1,10-phenanthroline (phen), trans-/cis-[M(py)2Cl2], [M(py)4]Cl2, trans-/cis-[M(py)2Cl4], [M(bpy)Cl2], [M(bpy)Cl4], [M(phen)Cl2], [M(phen)Cl4], where M = Pd, Pt, was studied by 1H, 195Pt, and 15N NMR. The 90-140 ppm low-frequency 15N coordination shifts are discussed in terms of such structural features of the complexes as the type of platinide metal, oxidation state, coordination sphere geometry and the type of ligand. The results of quantum-chem. NMR calculations were compared with the exptl. 15N coordination shifts, well reproducing their magnitude and correlation with the mol. structure.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Lee, Cheng-Ting; Tsai, Chang-Che; Wu, Pei-Jhen; Yu, Bor-Yih; Lin, Shiang-Tai published an article about the compound: Picolinamide( cas:1452-77-3,SMILESS:O=C(N)C1=NC=CC=C1 ).Formula: C6H6N2O. 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:1452-77-3) through the article.

This work aims at evaluating potential direct CO2 conversion processes through systematic screening and process simulation. Fifteen direct routes converting CO2 to carbonates or carbamates, with in situ chem. dehydration using 2-cyanopyridine (2-CP) are focused. The work covers an extensive examination (and supplement) on the phys. properties, selection of promising routes, process simulation, optimization, environmental, and techno-economic evaluation. Firstly, three promising routes were selected, producing di-Me carbonate (DMC), di-Pr carbonate (DPC), and Iso-Pr N-phenylcarbamate (IPPhCM), based on three criteria: azeotropic search, product selectivity and reacting conditions. Next, the corresponding processes were simulated, optimized, heat-integrated, and systematically compared with the previously-proposed di-Et carbonate (DEC) process through environmental and economic anal. From environmental anal., the CO2 emission rate (CO2-e, in kg/kg-product) was 0.067, 0.088, -0.040 and -0.154 for producing DMC, DPC, IPPhCM and DEC, resp. By reducing the excess ratio used for reaction (i.e. 2-CP/alc. or amine/alc.), the CO2-e improved to -0.122, -0.086, and -0.117 for producing DMC, DPC and IPPhCM, resp. Finally, the min. required selling prices (MRSP) at 15% internal rate of return (IRR) were determined, with the unit price of 2-CP, 2-picolinamide (2-PA), and the reactor residence time regarded as uncertainties. The MRSPs for DMC, DPC, IPPhCM and DEC are found in the range of 1.50-4.96, 2.29-4.24, 2.07-4.06 and 1.12-2.81 (all in USD/kg), resp. Future studies exploring the com. availability and the regeneration of 2-CP, and the feasibility of reducing the excess ratio and the reaction residence time are considered helpful.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Recommanded Product: 1-Bromoundecane. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Cobalt-Catalyzed Decarboxylative Methylation and Ethylation of Aliphatic N-(Acyloxy)phthalimides with Organoaluminum Reagents. Author is Wang, Ze-Zhong; Wang, Guang-Zu; Zhao, Bin; Shang, Rui; Fu, Yao.

A cobalt-catalyzed decarboxylative methylation of aliphatic redox-active esters [N-(acyloxy)phthalimides; RAEs] I (R = heptadecyl, 1-[(4-methylphenyl)sulfonyl]piperidin-4-yl, 1-benzoylpyrrolidin-2-yl, 4-(4-chlorophenoxy)butyl, etc.) with trimethylaluminum under mild conditions was developed, providing a method for transforming a carboxylate group into a Me group without redox fluctuation. Primary and secondary RAEs I were both amenable substrates, whereas a tertiary RAE delivered an elimination product. Triethylaluminum was also used to deliver a decarboxylative ethylation product RC2H5.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Category: tetrahydroisoquinoline. 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: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Screening Libraries of Amphiphilic Janus Dendrimers Based on Natural Phenolic Acids to Discover Monodisperse Unilamellar Dendrimersomes. Author is Buzzacchera, Irene; Xiao, Qi; Han, Hong; Rahimi, Khosrow; Li, Shangda; Kostina, Nina Yu.; Toebes, B. Jelle; Wilner, Samantha E.; Moller, Martin; Rodriguez-Emmenegger, Cesar; Baumgart, Tobias; Wilson, Daniela A.; Wilson, Christopher J.; Klein, Michael L.; Percec, Virgil.

Natural, including plant, and synthetic phenolic acids are employed as building blocks for the synthesis of constitutional isomeric libraries of self-assembling dendrons and dendrimers that are the simplest examples of programmed synthetic macromols. Amphiphilic Janus dendrimers are synthesized from a diversity of building blocks including natural phenolic acids. They self-assemble in water or buffer into vesicular dendrimersomes employed as biol. membrane mimics, hybrid and synthetic cells. These dendrimersomes are predominantly uni- or multilamellar vesicles with size and polydispersity that is predicted by their primary structure. However, in numerous cases, unilamellar dendrimersomes completely free of multilamellar assemblies are desirable. Here, we report the synthesis and structural anal. of a library containing 13 amphiphilic Janus dendrimers containing linear and branched alkyl chains on their hydrophobic part. They were prepared by an optimized iterative modular synthesis starting from natural phenolic acids. Monodisperse dendrimersomes were prepared by injection and giant polydisperse by hydration. Both were structurally characterized to select the mol. design principles that provide unilamellar dendrimersomes in higher yields and shorter reaction times than under previously used reaction conditions. These dendrimersomes are expected to provide important tools for synthetic cell biol., encapsulation, and delivery.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

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 Unusual chemical behavior and molecular structure of a platinum(II) complex with N,N-diethylhydroxylamine, published in 1992-09-30, which mentions a compound: 15227-42-6, Name is cis-Dichlorobis(pyridine)platinum(II), Molecular C10H10Cl2N2Pt, Category: tetrahydroisoquinoline.

cis-[PtL2Cl2] (L = Et2NOH) was prepared by the reaction of K2PtCl4 with L. cis-[PtL2Cl2] does not react with amines (NH3, pyridine, Et2NOH) and L does not react with cis-[PtA2Cl2] (A = NH3, py). cis-[PtL2Cl2] is monoclinic, space group C2, a 7.569(2), b 12.384(7), c 15.428(2) Å, β 100.00(2)°, Z = 4, R = 0.0287. One L coordinates to Pt through the N atom whereas the other is in the zwitterionic form and coordinates through the O atom. The low reactivity of cis-[PtL2Cl2] in substitution reactions is explained on the basis of H bonding and agostic interactions due to which the axial positions in the square planar complexes are blocked against nucleophilic attack.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

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: cis-Dichlorobis(pyridine)platinum(II), is researched, Molecular C10H10Cl2N2Pt, CAS is 15227-42-6, about The effect of complexation with platinum in polyfluorene derivatives: A photo- and electro-luminescence study.Application of 15227-42-6.

The synthesis and characterization of a polymeric structure containing fluorene units statistically linked to 3-cyclohexyl-thiophene and bipyridine PFOTBipy-poly[(4-hexylthiophene-2,5-diyl)(9,9-dihexyl-fluoren-2,7-diyl)-co-(bipyridine-5.5′-diyl)(9,9-dihexyl-fluoren-2,7-diyl)], is reported. The complexation with platinum was possible through the bipyridil units present in 10%, 50% and 100% content. The structure has a fluorenyl moiety between each bipyridine and thiophene groups resulting in a stable and efficient light-emitting polymeric material combining the well known emissive properties of fluorene, the charge mobility generated by thiophene and the electron-transfer properties of a metal complex as well. All the polymers were photo and electroluminescent materials, and showed phosphorescence at low temperatures Photoluminescence properties were studied by steady state and time resolved spectroscopy and showed changes of both emission peak and relative intensity of the emission bands depending on the relative amount of the platinum complex. The electroluminescence followed the trends found for photoluminescence. The blue emission of the copolymer without platinum is due to the fluorenyl segments and for higher complex contents the emission is characteristic of the aggregates involving the bipyridinyl moieties. Therefore, emission color can be tuned by the complex content. The turn-on voltage was strongly reduced from 22 to 8 V for the 100% complexed copolymer, as compared to the device made with the non complexed one, but the luminance decreased, due to quenching or trapping effects.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Recommanded Product: Picolinamide. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Dehydration of primary amides to nitriles catalyzed by [CNC]-pincer hydrido cobalt(III) complexes. Author is Ren, Shishuai; Wang, Yangyang; Yang, Fei; Sun, Hongjian; Li, Xiaoyan.

The dehydration reactions from primary amides to nitriles were catalyzed by the [CNC]-pincer hydrido cobalt(III) complexes [(ortho-F4C6-CH=N-C10H6)Co(III)(H)(PMe3)2], [(2,5-F2C6H2-CH=N-C10H6)Co(III)(H)(PMe3)2] (I) and [(2,4,5-F3C6H-CH=N-C10H6)Co(III)(H)(PMe3)2] as catalysts with (EtO)3SiH as an efficient reducing agent. These hydrido cobalt(III) complexes as catalysts are suitable for many substrates and have good functional group tolerance. Among the three cobalt hydrides, complex I is the best catalyst. This is the first hydrido cobalt complex-catalyzed dehydration of primary amides to nitriles.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem