Category: 693-67-4

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 Anodic Oxidation of Dithiane Carboxylic Acids: A Rapid and Mild Way to Access Functionalized Orthoesters, published in 2020-05-15, which mentions a compound: 693-67-4, Name is 1-Bromoundecane, Molecular C11H23Br, Synthetic Route 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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Kanakala, Madhu Babu; Yelamaggad, Channabasaveshwar V. published the article 《Exceptional dual fluorescent, excited-state intramolecular proton-transfer (ESIPT) columnar liquid crystals characterized by J-stacking and large Stokes shifts》. Keywords: phasmidic bissalicylideneaniline preparation columnar liquid crystal phase transition fluorescence.They researched the compound: 1-Bromoundecane( cas:693-67-4 ).SDS of cas: 693-67-4. 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:693-67-4) here.

Herein the synthesis, characterization, and ESIPT activity of a homologous series of novel phasmidic bis(N-salicylideneaniline) Col LCs. was reported. Optical microscopic, calorimetric and powder X-ray diffraction (XRD) studies evidence the occurrence of hexagonal columnar (Colh) phase having p6mm symmetry where the constituent slices result from the self-assembly of a pair of mesogens in a side-by-side manner facilitated by intense longitudinal π-π interactions. X-ray data confirm the absence of both directionally correlated tilting of the slices and transverse core-core interactions within the columns. Fluorescence probing clearly evidence the ESIPT occurring not only in DCM solution of the mesogens but also in their three-condensed states viz., solid, liquid crystal, and isotropic liquid phase; in general, two archetypal emission bands at ∼430 nm (weak) and ∼ 630 nm (strong) with large Stokes shifts (250-275 nm) of ESIPT phenomenon was observed The slow shift of emission maxima of the ESIPT fluorescence as a function of decreasing temperature without photoluminescence quenching coupled with the estimated tilt angle (θ) of the slices normal to the columnar axis (37 to 42°), from the XRD data, confirmed the formation of so-called Scheibe or J-aggregates. The redox activity, metal ion sensing ability, and solvatochromism of the mesogens was also investigated. The study suggests that these ESIPT Col LCs with band-gap of about 3 eV can be regarded as wide-bandgap semiconducting materials having the electronic characteristics falling between those of conventional semiconductors and insulators.

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SDS of cas: 693-67-4. 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: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about A selectable approach for polarity-fixed and polarity-controllable polymer films with hexagonal columnar structures. Author is Ohno, Takaya; Nonoshita, Sho; Akiyama, Azumi; Kohri, Michinari; Taniguchi, Tatsuo; Kishikawa, Keiki.

Electroresponsive columnar liquid crystalline urea compounds, N,N’-bis(3,4,5-trialkyloxyphenyl)ureas I and II (1 and 2, resp. ) possessing six and four terminal double bonds, were photopolymerized by UV irradiation in the liquid crystal phases to give polymerized compounds, labeled P-1-Colh and P-2-Colh, that possessed a hexagonal columnar structure. Furthermore, the photo polymerization of 1 and 2 sandwiched between two indium tin oxide-deposited glass plates with applying an elec. field (20 V μm-1), produced polymerized compounds, P-1-Colh-E and P-2-Colh-E, and polarized light optical microscopy clarified that the columns polymerized were aligned in parallel to the applied elec. field. In addition, by the phenomenon that polar substances absorb laser light (λ = 1064 nm) and emit second harmonic generation light (λ = 532 nm), the difference in electro-response between P-1-Colh-E and P-2-Colh-E has been revealed. The former was a polymer whose macropolarity was completely fixed, and the latter was a polymer whose macropolarity was controllable by applying an external voltage.

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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, U.S. Gov’t, Non-P.H.S., Journal of the American Chemical Society called Dictating Nanoparticle Assembly via Systems-Level Control of Molecular Multivalency, Author is Santos, Peter J.; Cao, Zhen; Zhang, Jianyuan; Alexander-Katz, Alfredo; Macfarlane, Robert J., which mentions a compound: 693-67-4, SMILESS is CCCCCCCCCCCBr, Molecular C11H23Br, COA of Formula: C11H23Br.

Nanoparticle assembly can be controlled by multivalent binding interactions between surface ligands, indicating that more precise control over these interactions is important to design complex nanoscale architectures. It has been well-established in natural materials that the arrangement of different mol. species in three dimensions can affect the ability of individual supramol. units to coordinate their binding, thereby regulating the strength and specificity of their collective mol. interactions. However, in artificial systems, limited examples exist that quant. demonstrate how changes in nanoscale geometry can be used to rationally modulate the thermodn. of individual mol. binding interactions. As a result, the use of nanoscale design features to regulate mol. bonding remains an underutilized design handle to control nanomaterials synthesis. Here we demonstrate a polymer-coated nanoparticle material where supramol. bonding and nanoscale structure are used in conjunction to dictate the thermodn. of their multivalent interactions, resulting in emergent bundling of supramol. binding groups that would not be expected on the basis of the mol. structures alone. Addnl., we show that these emergent phenomena can controllably alter the superlattice symmetry by using the mesoscale particle arrangement to alter the thermodn. of the supramol. bonding behavior. The ability to rationally program mol. multivalency via a systems-level approach therefore provides a major step forward in the assembly of complex artificial structures, with implications for future designs of both nanoparticle- and supramol.-based materials.

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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 Molecular Liquids called Coumarin substituted symmetric diaminopyridine molecules: Synthesis, mesomorphic characterizations and DFT studies, Author is Mohammad, AbdulKarim-Talaq; Al-Mohammed, Mohammad Hameed; Srinivasa, H. T.; Ameen, Wissam Ahmed, which mentions a compound: 693-67-4, SMILESS is CCCCCCCCCCCBr, Molecular C11H23Br, Recommanded Product: 693-67-4.

Synthesis and characterization of 2,6-diaminopyridine bearing sym. substituted coumarins I [R = n-pentyl, n-octyl, n-nonanyl, etc.] from a lateral side of the mols. was reported. All the mols. I were characterized by standard spectroscopic methods such as IR spectroscopy and NMR spectroscopy techniques. Mesomorphic properties were evaluated by the differential scanning calorimetry and the polarized optical microscope. The measurements showed that the lower members did not favor liquid crystal formation, while higher members were exhibiting liquid crystalline, namely nematic mesophase. The DFT computations manifest the nature of liquid crystal geometrical aspects.

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Rhodium-catalyzed direct alkylation of benzylic amines using alkyl bromides, published in 2019-01-31, which mentions a compound: 693-67-4, mainly applied to benzylmethylamino pyridine alkyl bromide rhodium catalyzed alkylation; Catalysis; C–H activation; C–H functionalization; Directing group, Electric Literature of C11H23Br.

The development and substrate scope evaluation of a direct alkylation protocol of the C(sp3)-H bond of benzylic amines using alkyl bromides was reported. This pyridine-directed method was initiated by elimination of the alkyl bromide to a terminal olefin, which was then the true alkylating agent.

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Reference of 1-Bromoundecane. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Novel green synthetic approach for liquid crystalline materials using multi-component reactions. Author is Shanker, G.; Srinatha, M. K.; Sandhya Kumari, D.; Ranjitha, B. S.; Alaasar, M..

Synthesis of disk-shape liquid crystalline materials using multi-component reactions is reported. Two new series, the compounds I (R = n-CnH2n+1; n = 6, 7, 8, 10, 11, 12) and II, were synthesized by coupling either 2,3-dihydroxynaphthalene or 2,6-dihydroxynaphthalene with the corresponding 3,4,5-tris(alkoxy)anilines under solvent-free conditions. The mol. structures of the new materials were confirmed using 1H NMR, 13C NMR and CHN elemental anal. The phase behavior was investigated using polarizing optical microscope and differential scanning calorimetry experiments All the materials exhibited room temperature discotic nematic phase during the cooling cycles as confirmed by X-ray diffraction studies. This synthetic approach provides multiple advantages such as high atom economy, short reaction time, mild reaction condition, simple workup, and do not require column chromatog. purification

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Related Products of 693-67-4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Facilitated transport of copper(II) across polymer inclusion membrane with triazole derivatives as carrier. Author is Gajda, Bernadeta; Plackowski, Radoslaw; Skrzypczak, Andrzej; Bogacki, Mariusz B..

This study investigates copper(II) ion transport through a polymer inclusion membrane (PIM) containing 1-alkyl-1,2,4-triazole (n = 8, 9, 10, 11, 12, 14), o-nitrophenyl octyl ether as the plasticizer and cellulose triacetate as the polymer matrix. The feeding phase was a solution of 0.1 mol/dm3CuCl2 and an equimolar (0.1 mol/dm3) mixture of copper, nickel, and cobalt chlorides with varying concentrations of chloride anions (from 0.5 to 5.0 mol/dm3) established with NaCl. The receiving phase was demineralized water. The flow rate of the source and receiving phases through the membrane module was within the range from 0.5 cm3/min to 4.5 cm3/min. The tests were carried out at temperatures of 20, 30, 40 and 50°C. Transport of NaCl through the membrane was excluded for the duration of the test. It was noted that the flow rate through the membrane changes depending on the length of the carbon chain in the alkyl substituent from 16.1μmol/(m2s) to 1.59μmol/(m2s) in the following order: C8 > C9 > C10 > C11 > C12 > C14. The activation energy was 71.3 ± 3.0 kJ/mol, indicating ion transport through the PIM controlled with a chem. reaction. Results for transport in case of the concurrent separation of copper(II), nickel(II), and cobalt(II) indicate a possibility to sep. them in a selective manner.

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Application of 693-67-4. 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 Reactivity Ratios of MMA and N,N-Dimethyl-N-{2-[(2-methylprop-2-enoyl)oxy]ethyl}undecane-1-aminium Bromide in Thermal and UV Initiation Copolymerization. Author is Liu, Yixian; Xu, William Z.; Charpentier, Paul A..

Reactivity ratios for the copolymerization of Me methacrylate (MMA) and a quaternary ammonium compound (QAC) N,N-dimethyl-N-{2-[(2-methylprop-2-enoyl)oxy]ethyl}undecane-1-aminium bromide (dMEMUABr) were measured for the first time by using a thermal initiator azobisisobutyronitrile (AIBN) in deuterated DMSO (DMSO-d6) and deuterated chloroform (CDCl3) and a photo initiator 2-hydroxy-2-methylpropiophenone (HMP) under UV irradiation in CDCl3, resp. The consumption profiles for monomer in the thermal initiation copolymerization were monitored by in-situ 1H NMR while the data were analyzed by the Meyo-Lewis, Kelen-Tudos, and Meyer-Lowry methods, showing that the reactivity ratio of dMEMUABr is lower than that of MMA in DMSO-d6 but much higher in CDCl3. The significantly different reactivity ratios of dMEMUABr in DMSO-d6 from that in CDCl3 are attributed to micelle formation. These findings enable addnl. flexibility in the design and development of antimicrobial poly(MMA-co-dMEMUABr) coatings with desired copolymer chain sequence.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-Bromoundecane( cas:693-67-4 ) is researched.Recommanded Product: 693-67-4.Buniya, Meaad K.; Mohammad, Abdulkarim-Talaq; Al-Majidi, Suaad Mohammed Husain published the article 《Antibacterial studies of some novel Schiff base compounds》 about this compound( cas:693-67-4 ) in Materials Today: Proceedings. Keywords: aminomethyl benzyliminomethyl phenyl alkoxybenzoate Schiff base preparation antibacterial. Let’s learn more about this compound (cas:693-67-4).

A new series of 4-(((4-(aminomethyl)benzyl)imino)methyl)Ph 4-(alkyloxy)benzoates I [R = n-hexyl, n-octyl, n-tetradecyl, etc.] were synthesized and characterized. The condensation reaction of 4-formylphenyl 4-(alkyloxy)benzoate with 1,4-bis(aminomethyl)benzene yielded the title Schiff base compounds I. Titled compounds I containing a terminal alkoxy chain range from n = 6-14 carbon atoms. FT-IR and multinuclear-NMR were used to determine the structures of target compounds I. Compounds I were subjected antimicrobial studies found to have significant activity against the selected bacterial under study.

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