Category: 693-67-4

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, Mendeleev Communications called Synthesis and biological evaluation of novel bispyridinium salts containing naphthalene-2,7-diylbis(oxy) spacer, Author is Vereshchagin, Anatoly N.; Frolov, Nikita A.; Pakina, Anna S.; Hansford, Karl A.; Egorov, Mikhail P., which mentions a compound: 693-67-4, SMILESS is CCCCCCCCCCCBr, Molecular C11H23Br, Name: 1-Bromoundecane.

Novel five bispyridinium salts based on a naphthalene-2,7-diylbis(oxy) spacer were synthesized. The obtained compounds showed stronger biol. activity against five strains of bacteria and two fungi as compared to modern biocides such as cetylpyridinium chloride, chlorhexidine bigluconate, 1-decyl-3-(4-(4-[(1-decylpyridin-1-ium-3-yl)oxy]phenyl)phenoxy)pyridin-1-ium dibromide, etc. used in the pharmaceutical market.

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Recommanded Product: 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 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.

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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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.Rieth, Thorsten; Tober, Natalie; Limbach, Daniel; Haspel, Tobias; Sperner, Marcel; Schupp, Niklas; Wicker, Philipp; Glang, Stefan; Lehmann, Matthias; Detert, Heiner researched the compound: 1-Bromoundecane( cas:693-67-4 ).Product Details of 693-67-4.They published the article 《Impact of substitution pattern and chain length on the thermotropic properties of alkoxy-substituted triphenyl-tristriazolotriazines》 about this compound( cas:693-67-4 ) in Molecules. Keywords: cyanuric chloride alkoxyaryltetrazole preparation cyclocondensation; trisalkoxyaryl tristriazolotriazine preparation thermal isomerization; X-ray diffraction; differential scanning calorimetry; discotic liquid crystals; heterocycles; polarizing optical microscopy; star-shaped compounds; structure–property relation; swallow-tail. We’ll tell you more about this compound (cas:693-67-4).

Tristriazolotriazines with a threefold alkoxyphenyl substitution were prepared and studied by DSC, polarized optical microscopy (POM) and X-ray scattering. Six pentyloxy chains are sufficient to induce liquid-crystalline behavior in these star-shaped compounds Thermotropic properties of tristriazolotriazines with varying substitution patterns and a periphery of linear chains of different lengths, branching in the chain and swallow-tails, are compared. Generally, these disks display broad and stable thermotropic mesophases, with the tangential tristriazolotriazines being superior to the radial isomer. The structure-property relationships of the number of alkyl chains, their position, length and structure were studied.

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Electric Literature 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 Guest Vapor-Induced State Change of Structural Liquid Pillar[6]arene. Author is Ogoshi, Tomoki; Maruyama, Keisuke; Sakatsume, Yuma; Kakuta, Takahiro; Yamagishi, Tada-aki; Ichikawa, Takahiro; Mizuno, Motohiro.

State change is a key phenomenon in materials science. We report the first observation of vapor-responsive reversible structural liquid-to-solid and solid-to-structural liquid state changes. We observed that a macrocyclic compound, a pillar[6]arene derivative bearing 12 n-hexyl substituents, is a room temperature structural liquid with unique properties. Formation of a host-guest complex between the pillar[6]arene cavity and the n-hexyl substituent results in a structural liquid with nanoscale structural heterogeneities. The structural liquid solidifies when exposed to competitive cyclohexane guest vapor, whereupon cyclohexane replaces the n-hexyl substituents in the pillar[6]arene cavity and the n-hexyl substituents located outside of the cavity crystallize into distinct nanolayer assemblies. The solid reverts back to the structural liquid when the cyclohexane guest is removed through heating under reduced pressure because of rethreading of the n-hexyl substituents into the cavity. The structural liquid-to-solid and solid-to-structural liquid changes are reversible through the uptake and release of cyclohexane guest vapor.

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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: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Novel esterquat-based herbicidal ionic liquids incorporating MCPA and MCPP for simultaneous stimulation of maize growth and fighting cornflower.Formula: C11H23Br.

Modern agricultural practices are often based on the use of mixtures of specific herbicides to achieve efficient crop protection. The major drawbacks of com. herbicidal formulations include the necessity to incorporate toxic surfactants and high volatility of active substances. Transformation of herbicides into herbicidal ionic liquids (HILs) seems to be a promising alternative which allows to almost completely reduce volatility due to ionic interactions. In the scope of this research, we transformed (2-methyl-4-chlorophenoxy)acetic acid (MCPA) into a quaternary ester (esterquat) with the use of derivatives of 2-dimethylaminoethanol. The obtained esterquats were later coupled with (±)-2-(4-chloro-2-methylphenoxy)propionic acid (MCPP) in the form of an anion. The combination of MCPA and MCPA is commonly applied in the UK, EU countries and also in the USA to increase the spectrum of targeted weed species. In the framework of this study, novel HILs with an esterquat moiety incorporating a long alkyl chain (C8, C9, C10, C11, C12, C14) were prepared and characterized in terms of basic physicochem. properties (solubility and volatility) as well as biodegradability. Their phytotoxicity was assessed towards cornflower (Centaurea cyanus) as a model weed and maize (Zea mays) as a crop plant. The presence of the esterquat cation contributed to satisfactory solubility in water and other low polar solvents, which eliminates the need to add exogenous adjuvants. Further experiments indicated that the tested HILs stimulated the germination stage of maize and maintained high herbicidal activity towards cornflower. No significant differences in terms of properties were observed in case of HILs which included alkyl substituents with an odd number of carbon atoms. Future studies should be focused on structural modifications in order to improve the biodegradability as well as field studies for evaluation of com. applications.

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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 Synthesis and microbiological properties of novel bis-quaternary ammonium compounds based on 4,4′-oxydiphenol spacer, published in 2019-09-30, which mentions a compound: 693-67-4, Name is 1-Bromoundecane, Molecular C11H23Br, COA of Formula: C11H23Br.

Novel gemini (tail-head-spacer-head-tail) bis-quaternary ammonium compounds I [n = 7, 8, 9, etc.] with a 4,4′-oxydiphenol spacer between two pyridinium heads were synthesized and compared with commonly used antiseptics such as benzalkonium chloride and chlorhexidine gluconate. Analogs bearing C8H17, C9H19 and C10H21 aliphatic groups displayed potent broad spectrum in-vitro activity against five bacterial strains and two fungi, with min. inhibitory concentrations relatively independent of the counter ion.

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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.Garcia, Anthony D.; Leech, Matthew C.; Petti, Alessia; Denis, Camille; Goodall, Iain C. A.; Dobbs, Adrian P.; Lam, Kevin published the article 《Anodic oxidation of dithiane carboxylic acids: a rapid, mild and practical way to access functionalised orthoesters》 about this compound( cas:693-67-4 ) in ChemRxiv. Keywords: anodic oxidation dithiane carboxylic acid ortho ester synthesis. Let’s learn more about this compound (cas:693-67-4).

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 [e.g., I → II (99%) in MeOH in presence of NaOMe using graphite electrodes]. 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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Zuma, Nonkululeko H.; Smit, Frans J.; Seldon, Ronnett; Aucamp, Janine; Jordaan, Audrey; Warner, Digby F.; N’Da, David D. published an article about the compound: 1-Bromoundecane( cas:693-67-4,SMILESS:CCCCCCCCCCCBr ).SDS of cas: 693-67-4. 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:693-67-4) through the article.

To improve TB efficacy of nitrofurantoin (NFT), a series of NFT analogs I [R = Me, Et, Bn, etc.] was synthesized and evaluated in vitro for anti-mycobacterial activity against the laboratory strain, Mtb H37Rv and for potential cytotoxicity using human embryonic kidney (HEK-293) and Chinese hamster ovarian (CHO) cells. The NFT analogs showed good safety profiles, enhanced anti-mycobacterial potency, improved lipophilicity, as well as reduced protein binding affinity. Analog I [R = n-Bu] which contains an eight carbon aliphatic chain was the most active, equipotent to isoniazid (INH), a major front-line agent, with MIC90 = 0.5μM, 30-fold more potency than the parent drug, nitrofurantoin (MIC90 = 15μM), and 100-fold more selective towards mycobacteria. Therefore, compound I [R = n-Bu] was identified as a validated hit for further investigation in the urgent search for new, safe and affordable TB drugs.

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Computed Properties of C11H23Br. 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 Incorporation of alkylthio side chains on benzothiadiazole-based non-fullerene acceptors enables high-performance organic solar cells with over 16% efficiency. Author is Cheung, Andy Man Hong; Yu, Han; Luo, Siwei; Wang, Zhen; Qi, Zhenyu; Zhou, Wentao; Arunagiri, Lingeswaran; Chang, Yuan; Yao, Huatong; Ade, Harald; Yan, He.

Y6-type non-fullerene acceptors (NFAs) with an acceptor-donor-acceptor′-donor-acceptor (A-D-A′-D-A) structure have been very popular in the field of organic solar cells (OSCs) due to their excellent performances. In this study, two novel NFAs, BTPS-4F and BTPS-4Cl were designed by incorporating undecylthio side chains into a thienothiophene moiety and connecting it to two different halogenated 2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile end groups (2F-IC and 2Cl-IC) resp. When blended with a donor polymer, PM6, BTPS-4F-based devices achieved a high power conversion efficiency (PCE) of up to 16.2% with an open-circuit voltage (VOC) of 0.82 V, a short-circuit c.d. (JSC) of 25.2 mA cm-2 and a fill factor (FF) of 0.78, while BTPS-4Cl-based devices achieved an inferior PCE of 13.5%. This is the first time alkylthio chains are employed on Y6-like NFAs to achieve high-performance OSCs. Subsequent characterization showed that the upshifted energy level of BTPS-4F and the better intermol. packing in PM6:BTPS-4F blends are the major reasons for the enhanced performance of BTPS-4F-based devices over BTPS-4Cl-based ones. This work provides high-performance non-fullerene acceptors for OSCs and demonstrates a promising mol. design strategy that can effectively regulate their energy levels and morphol.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-Bromoundecane(SMILESS: CCCCCCCCCCCBr,cas:693-67-4) is researched.Product Details of 5451-40-1. The article 《A selectable approach for polarity-fixed and polarity-controllable polymer films with hexagonal columnar structures》 in relation to this compound, is published in Materials Letters. Let’s take a look at the latest research on this compound (cas:693-67-4).

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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