Category: 693-67-4

Mohammad, Abdulkarim-Talaq; Al-Mohammedi, Mohammad Hameed; Ghdhayeb, Mohammed Zghair; Husain Al-Majidi, Suaad Mohammed published the article 《Coumarin dimers of benzidine and phenylenediamine cores: synthesis, characterisation and mesomorphic properties》. Keywords: coumarin Schiff base liquid crystal preparation diastereoselective mesomorphic property.They researched the compound: 1-Bromoundecane( cas:693-67-4 ).Formula: C11H23Br. 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.

Three new homologous series of coumarin heterocycles-derived mesogens I (X = biphenyl-4,4′-diyl, benzene-1,4-diyl, 3,3′-dimethoxy-biphenyl-4,4′-diyl; R = C6H13, C10H21, C14H29, etc.) have been synthesized and characterized. The sym. dimers of coumarin contain two Schiff base moieties as connecting groups with Ph or biphenyl central cores. Thermal, mesophase behaviors and textural types were studied by DSC and POM instrumentations. The nematic mesophase was enhanced prominently for most of the compounds, and appeared in relatively medium to long alkyl chain at both terminals of the mols.

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

Category: tetrahydroisoquinoline. 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 Polar functional group-containing glycolipid CD1d ligands modulate cytokine-biasing responses and prevent experimental colitis. Author is Inuki, Shinsuke; Hirata, Natsumi; Kashiwabara, Emi; Kishi, Junichiro; Aiba, Toshihiko; Teratani, Toshiaki; Nakamura, Wataru; Kojima, Yoshimi; Maruyama, Toru; Kanai, Takanori; Fujimoto, Yukari.

The MHC class I-like mol. CD1d is a nonpolymorphic antigen-presenting glycoprotein, and its ligands include glycolipids, such as α-GalCer. The complexes between CD1d and ligands activate natural killer T cells by T cell receptor recognition, leading to the secretion of various cytokines (IFN-γ, IL-4, IL-17A, etc.). Herein, we report structure-activity relationship studies of α-GalCer derivatives containing various functional groups in their lipid acyl chains. Several derivatives have been identified as potent CD1d ligands displaying higher cytokine induction levels and/or unique cytokine polarization. The studies also indicated that flexibility of the lipid moiety can affect the binding affinity, the total cytokine production level and/or cytokine biasing. Based on our immunol. evaluation and investigation of physicochem. properties, we chose bisamide- and Bz amide-containing derivatives 2 and 3, and evaluated their in vivo efficacy in a DSS-induced model of ulcerative colitis. The derivative 3 that exhibits Th2- and Th17-biasing responses, demonstrated significant protective effects against intestinal inflammation in the DSS-induced model, after a single i.p. injection.

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

Application In Synthesis 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 Synthesis and biological evaluation of novel bis-quaternary ammonium compounds with p-terphenyl spacer. Author is Vereshchagin, Anatoly N.; Frolov, Nikita A.; Konyuhova, Valeria Yu.; Dorofeeva, Evgeniya O.; Hansford, Karl A.; Egorov, Mikhail P..

Bis-quaternary ammonium compounds I·2 Br- [R = H(CH2)n; n = 7, 8, 9, 10, 11] with a p-terphenyl spacer between two pyridinium heads were synthesized. I·2 Br- (n = 8) was superior to the known benzalkonium chloride, miramistin and chlorhexidine bisgluconate in its MIC values against five pathogenic bacteria.

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

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.Santos, Peter J.; Cao, Zhen; Zhang, Jianyuan; Alexander-Katz, Alfredo; Macfarlane, Robert J. researched the compound: 1-Bromoundecane( cas:693-67-4 ).COA of Formula: C11H23Br.They published the article 《Dictating Nanoparticle Assembly via Systems-Level Control of Molecular Multivalency》 about this compound( cas:693-67-4 ) in Journal of the American Chemical Society. Keywords: dictating nanoparticle assembly system multivalency. We’ll tell you more about this compound (cas:693-67-4).

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

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.Wang, Ze-Zhong; Wang, Guang-Zu; Zhao, Bin; Shang, Rui; Fu, Yao researched the compound: 1-Bromoundecane( cas:693-67-4 ).Quality Control of 1-Bromoundecane.They published the article 《Cobalt-Catalyzed Decarboxylative Methylation and Ethylation of Aliphatic N-(Acyloxy)phthalimides with Organoaluminum Reagents》 about this compound( cas:693-67-4 ) in Synlett. Keywords: acyloxyphthalimide organoaluminum reagent decarboxylative methylation ethylation cobalt catalyst. We’ll tell you more about this compound (cas:693-67-4).

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.

Although many compounds look similar to this compound(693-67-4)Quality Control of 1-Bromoundecane, numerous studies have shown that this compound(SMILES:CCCCCCCCCCCBr), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

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 Novel (-)-goniofufurone mimics: Synthesis, antiproliferative activity and SAR analysis. Author is Zelenovic, Bojana Sreco; Kekezovic, Sladjana; Popsavin, Mirjana; Kojic, Vesna; Benedekovic, Goran; Popsavin, Velimir.

Divergent syntheses of novel (-)-goniofufurone mimics with an alko-xymethyl group as the side chain have been accomplished from D-glucose in nine synthetic steps and in overall yields 6.7-8.7%. Their in vitro antiproliferative activity was evaluated against eight human tumor cell lines as well as a single normal cell line. All analogs demonstrated powerful to good antiproliferative effects toward all malignant cell lines under evaluation. Against the HL-60 cell line, all mimics showed increased activities being 27- to 1604-fold more potent than the lead compound, (-)-goniofufurone. Remarkably, the majority of synthesized analogs displayed higher or similar activity to the com. antitumor agent doxorubicin (DOX) against A549 cell line. The most potent compound exhibited 196-fold stronger cytotoxicity than DOX in the culture of this cell line.

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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 Amphiphilic Star-Shaped Calix[4]resorcinarene as Stationary Phase for Capillary Gas Chromatography, published in 2019-11-30, which mentions a compound: 693-67-4, Name is 1-Bromoundecane, Molecular C11H23Br, Computed Properties of C11H23Br.

This work describes the separation performance of the amphiphilic star-shaped calix[4]resorcinarene (C4A-CL)(I) as the stationary phase for capillary gas chromatog. (GC). The statically coated C4A-CL capillary column exhibited medium polarity and high column efficiency of 3877 plates m-1 determined by naphthalene at 120 °C. Importantly, the C4A-CL column exhibited extremely high resolving capability for aliphatic analytes with varying polarity, including n-alkanes, esters, ketones, alcs., and bromoalkanes. In addition, the C4A-CL column exhibited high selectivity and resolving capability for positional, structural and cis-/trans-isomers. Among them, the C4A-CL column displayed advantageous resolving capability over the com. DB-17 column for aromatic amine isomers. Moreover, it was applied for the determination of isomer impurities in real samples, showing good potential in GC applications.

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

Product Details 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 Coumarin dimers of benzidine and phenylenediamine cores: synthesis, characterisation and mesomorphic properties. Author is Mohammad, Abdulkarim-Talaq; Al-Mohammedi, Mohammad Hameed; Ghdhayeb, Mohammed Zghair; Husain Al-Majidi, Suaad Mohammed.

Three new homologous series of coumarin heterocycles-derived mesogens I (X = biphenyl-4,4′-diyl, benzene-1,4-diyl, 3,3′-dimethoxy-biphenyl-4,4′-diyl; R = C6H13, C10H21, C14H29, etc.) have been synthesized and characterized. The sym. dimers of coumarin contain two Schiff base moieties as connecting groups with Ph or biphenyl central cores. Thermal, mesophase behaviors and textural types were studied by DSC and POM instrumentations. The nematic mesophase was enhanced prominently for most of the compounds, and appeared in relatively medium to long alkyl chain at both terminals of the mols.

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

SDS of cas: 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 Discovery, characterization and functional improvement of kumamonamide as a novel plant growth inhibitor that disturbs plant microtubules. Author is Ishida, Takashi; Yoshimura, Haruna; Takekawa, Masatsugu; Higaki, Takumi; Ideue, Takashi; Hatano, Masaki; Igarashi, Masayuki; Tani, Tokio; Sawa, Shinichiro; Ishikawa, Hayato.

In the present study, authors discovered a novel N-alkoxypyrrole compound, kumamonamide from Streptomyces werraensis MK493-CF1 and established a total synthesis procedure. Resulted in the bioactivity assays, it was found that kumamonamic acid, a synthetic intermediate of kumamonamide, is a potential plant growth inhibitor. Further, various derivatives of kumamonamic acid are developed, including a kumamonamic acid nonyloxy derivative (KAND), which displayed high herbicidal activity without adverse effects on HeLa cell growth. Authors also detected that kumamonamic acid derivatives disturb plant microtubules; and addnl., that KAND affected actin filaments and induced cell death. These multifaceted effects differ from those of known microtubule inhibitors, suggesting a novel mode of action of kumamonamic acid, which represents an important lead for the development of new herbicides.

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

Related Products of 693-67-4. 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. Compound: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Even-Odd Alkyl Chain-Length Alternation Regulates Oligothiophene Crystal Structure.

Alkyl chains of varied length and steric bulk are generally appended to π-conjugated chromophores to increase solubility These alkyl chains also regulate many aspects of the solid-state packing and, in turn, resultant electronic and optical properties of organic semiconductors, yet there remains little understanding as to how these moieties govern such characteristics. Here, we report on a series of (2,5-bis(3-alkylthiophen-2-yl) thieno[3,2-b]thiophenes) (BTTT) monomers where the single-crystal packing configurations and m.ps. alternate as a function of whether the alkyl side chains have an even or odd number of carbon atoms. When the alkyl chains contain an even number of carbon atoms, the mols. predominantly crystallize with the BTTT units of the stacked lamellae aligned in the same direction. In contrast, when the number of carbon atoms is odd, alternating lamellae are twisted with respect to their neighbors, i.e. the BTTT moieties in one layer are aligned in an orthogonal-like fashion to those in its neighboring lamellae, and the crystal m.ps. tend to be higher than those with the even-numbered alkyl chains. With d. functional theory calculations and geometric analyses, the variations in crystal structure and thus the differences in phys. properties are rationalized by an oscillating interlayer interaction that is a function of alkyl side chain atom count and length. This study characterizes an extreme case of an organic semiconductor crystal packing alternation to highlight the effect of even-odd assembly as an underutilized and under-reported handle for tuning the mol. packing of organic semiconductor materials.

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