Tag: M.W:200-300

Cruickshank, Ewan; Strachan, Grant J.; Storey, John MD; Imrie, Corrie T. published an article about the compound: 1-Bromoundecane( cas:693-67-4,SMILESS:CCCCCCCCCCCBr ).Safety of 1-Bromoundecane. 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.

The synthesis and characterization of the first eleven members of the 4′-(alkylthio)[1,1′-biphenyl]-4-carbonitriles, I [n = 1, 2, 3, etc.] was reported. All eleven members I showed monotropic liquid crystal behavior. The first six members were exclusively nematogenic, the seventh member showed nematic and smectic A phases and the higher homologues only smectic A behavior. A comparison of their transitional behavior with that of the corresponding alkyl and alkyloxy-cyanobiphenyls revealed a new pattern of behavior. Specifically, the nematic-isotropic transition temperatures showed a large decrease on passing from the methylthio to ethylthio homologues. This unexpected behavior was interpreted in terms of chalcogen bonding.

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

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 Screening Libraries of Amphiphilic Janus Dendrimers Based on Natural Phenolic Acids to Discover Monodisperse Unilamellar Dendrimersomes, published in 2019-02-11, which mentions a compound: 693-67-4, mainly applied to dendrimer dendrimersome, Synthetic Route of C11H23Br.

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

Product Details of 693-67-4. 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 Mn(II) and Zn(II) complexes of a benzimidazole ligand having undecyl chains: Crystal structures, photophysical and thermal properties. Author is Kirpik, Hilal; Kose, Muhammet.

A new tridentate benzimidazole ligand (L-C11) containing undecyl chains and its Mn(II) and Zn(II) complexes were synthesized and characterized by spectroscopic and anal. methods. Mol. structures of complexes [Mn(L-C11)Cl2] and [Zn(L-C11)Cl2] were evaluated by x-ray diffraction studies. The x-ray data showed metal ions in both complexes are five-coordinate with distorted square pyramidal geometry around the metal centers. The undecyl chains in the structure of the complexes are aligned in an interdigitated manner (head to tail) forming a non-polar domain. The aggregation properties of the ligand and its complexes were studied by UV-visible absorption and emission spectroscopies in DMF-water mixtures The emission spectral data revealed that the compounds showed aggregation induced quenching (AIQ) in DMF-water solutions Moreover, thermal properties of the compounds were studied by TG, DTG and DSC anal.

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

Recommanded Product: 1-Bromoundecane. 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 Exceptional dual fluorescent, excited-state intramolecular proton-transfer (ESIPT) columnar liquid crystals characterized by J-stacking and large Stokes shifts. Author is Kanakala, Madhu Babu; Yelamaggad, Channabasaveshwar V..

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

Electric Literature of C11H23Br. 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 Alkyl Chain Tuning of Small Molecule Acceptors for Efficient Organic Solar Cells. Author is Jiang, Kui; Wei, Qingya; Lai, Joshua Yuk Lin; Peng, Zhengxing; Kim, Ha Kyung; Yuan, Jun; Ye, Long; Ade, Harald; Zou, Yingping; Yan, He.

The field of organic solar cells has seen rapid developments after the report of a high-efficiency (15.7%) small mol. acceptor (SMA) named Y6. In this paper, we design and synthesize a family of SMAs with an aromatic backbone identical to that of Y6 but with different alkyl chains to investigate the influence of alkyl chains on the properties and performance of the SMAs. First, we show that it is beneficial to use branched alkyl chains on the nitrogen atoms of the pyrrole motif of the Y6. In addition, the branching position of the alkyl chains also has a major influence on material and device properties. The SMA with 3rd-position branched alkyl chains (named N3) exhibits optimal solubility and electronic and morphol. properties, thus yielding the best performance. Further device optimization using a ternary strategy allows us to achieve a high efficiency of 16.74% (and a certified efficiency of 16.42%).

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

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 Inhibition of bacterial growth and galactosyltransferase activity of WbwC by α, ω-bis(3-alkyl-1H-imidazolium)alkane salts: Effect of varying carbon content. Author is Kocev, Alexander; Melamed, Jacob; Wang, Shuo; Kong, Xianqi; Vlahakis, Jason Z.; Xu, Yaozu; Szarek, Walter A.; Brockhausen, Inka.

A series of compounds was designed and synthesized having two imidazolium rings separated by a polymethylene spacer and having alkyl substituents on each of the imidazolium rings. The compounds were assayed for their effects on the activity of galactosyltransferase WbwC, and also on the growth of Gram-neg. and Gram-pos. bacteria, as well as human cells. The inhibition observed on enzyme activities and cell growth was dependent on the total number of carbons in the spacer and the alkyl substituents on the imidazolium rings. These readily synthesized, achiral compounds have potential as antimicrobial and antiseptic agents.

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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.Tun Nur Iskandar, Nur Amanina Juniasari; Guan-Yeow, Yeap; Maeta, Nobuyuki; Ito, Masato M.; Nakamura, Yoshiyuki; Gas, Katarzyna; Sawicki, Maciej researched the compound: 1-Bromoundecane( cas:693-67-4 ).Application of 693-67-4.They published the article 《Anisotropic and magnetic properties in non-metal and non-radical organic aggregates of tri-substituted phenyl derivatives》 about this compound( cas:693-67-4 ) in New Journal of Chemistry. Keywords: alkoxy Ph imine biphenyl ester preparation anisotropic magnetic property. We’ll tell you more about this compound (cas:693-67-4).

A new series of tri-substituted Ph derivatives containing an aromatic imine unit and biphenyl ester possessing various numbers of carbon atoms at the terminal alkoxy chain, OCnH2n+1 (n = 7-12), along with a lateral o-ethoxy substituent have been successfully prepared and characterized by CHN microanal. along with spectroscopic techniques (FTIR, 1H- and 13C-NMR). The texture observation under polarized light revealed that all the soft condensed materials exhibited an enantiotropic nematic (N) phase. The current studies have shown that the mesomorphic behavior is greatly influenced by the length of the alkoxy chains wherein the thermal stability of a tri-substituted Ph derivative will decrease if the terminal alkoxy chain is increased from n = 7 to 12. For the first time, these materials which do not possess any magnetic species in their structure, demonstrate magnetic interaction through naked eye observation as well as quant. measurement using a SQUID magnetometer.

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

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: 1-Bromoundecane.Congdon, Molly; Fritzemeier, Russell G.; Kharel, Yugesh; Brown, Anne M.; Serbulea, Vlad; Bevan, David R.; Lynch, Kevin R.; Santos, Webster L. published the article 《Probing the substitution pattern of indole-based scaffold reveals potent and selective sphingosine kinase 2 inhibitors》 about this compound( cas:693-67-4 ) in European Journal of Medicinal Chemistry. Keywords: alkylindolyl oxadiazolylpyrrolidine preparation sphingosine kinase inhibition SAR mol docking; Molecular docking; SAR; SphK2; Sphingosine; Sphingosine 1-phosphate; Sphingosine kinase. Let’s learn more about this compound (cas:693-67-4).

Elevated levels of sphingosine 1-phosphate (S1P) and increased expression of sphingosine kinase isoforms (SphK1 and SphK2) have been implicated in a variety of disease states including cancer, inflammation, and autoimmunity. Selective inhibition of either SphK1 or SphK2 has been demonstrated to be effective in modulating S1P levels in animal models. Previously, authors reported a SphK2 naphthalene-based selective inhibitor, (R)-2-(3-(7-(pentyloxy)naphthalen-2-yl)-1,2,4-oxadiazol-5-yl)pyrrolidine-1-carboximidamide hydrochloride, which displays approx. 7-fold selectivity for hSphK2 over hSphK1 and has a SphK2 Ki value of 1.0μM. To improve SphK2 potency and selectivity, author’s designed, synthesized, and evaluated a series of indole-based compounds derived from (R)-2-(3-(7-(pentyloxy)naphthalen-2-yl)-1,2,4-oxadiazol-5-yl)pyrrolidine-1-carboximidamide hydrochloride. After investigating substitution patterns around the indole ring, author’s discovered that 1,5-disubstitution promoted optimal binding in the SphK2 substrate binding site and subsequent inhibition of enzymic activity. Author’s studies led to the identification of I (SphK2 Ki = 90 nM, >110 fold selective for SphK2 over SphK1). Mol. modeling studies revealed key nonpolar interactions with Val308, Phe548, His556, and Cys533 and hydrogen bonds with both Asp211 and Asp308 as responsible for the high SphK2 inhibition and selectivity.

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

Reference of 1-Bromoundecane. 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 Synthesis and Docking Study of N-(Cinnamoyl)-N’-(substituted)acryloyl Hydrazide Derivatives Containing Pyridinium Moieties as a Novel Class of Filamentous Temperature-Sensitive Protein Z Inhibitors against the Intractable Xanthomonas oryzae pv. oryzae Infections in Rice. Author is Zhou, Xiang; Feng, Yu-Mei; Qi, Pu-Ying; Shao, Wu-Bin; Wu, Zhi-Bing; Liu, Li-Wei; Wang, Yi; Ma, Hao-Dong; Wang, Pei-Yi; Li, Zhong; Yang, Song.

A series of novel N-(cinnamoyl)-N’-(substituted)acryloyl hydrazide derivatives containing pyridinium moieties I•X- [n = 4-11; R = Ph, 4-FC6H4, 2-thienyl, etc.; X = Br, I] were designed, and the anti-Xoo activity was determined The bioassay results showed that compound I•Br- [n = 10; R = Ph; X = Br] had excellent anti-Xoo activity (EC50 = 0.99 mg L-1) in vitro and distinct curative activity (63.2% at 200 mg L-1) in vivo. Further studies revealed that these designed compounds were XooFtsZ inhibitors, validating by the reduced GTPase activity of recombinant XooFtsZ, the non-filamentous XooFtsZ assembly observed in the TEM images, and the prolonged Xoo cells from the fluorescence patterns. Computational docking studies showed that compound I•Br- [n = 10; R = Ph; X = Br] had strong interactions with ASN34, GLN193, and GLN197 residues located in the α helix regions of XooFtsZ. The present study demonstrated the developed FtsZ inhibitors could serve as agents to control Xoo-induced infections.

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

Application 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 Effect of n-alkyl substitution on Cu(II)-selective chemosensing of rhodamine B derivatives.

Rhodamine B hydrazide-based mol. probes (1-10) were synthesized by derivatization with n-alkyl chains of different lengths at the hydrazide amino end. These probes exhibited selective absorption (A∼557) and fluorescence (I∼580) ‘off-on’ signal transduction along with a colorless → magenta color transition in the presence of Cu(II) ions among all the competitive metal ions investigated. The effective coordination of these probes to Cu(II) ions under the investigated environment forming [Cu·L]2+ (L = 1-5) and [Cu·L2]2+ (L = 6-10) complexes led to their spiro-ring opening, which in turn was expressed through signatory spectral peaks of ring-opened rhodamine. All these probes exhibited Cu(II) selectivity in signalling despite structural modifications to the core receptor unit through variation of the nature of the alkyl substituents. However, the sensitivity of the signalling and kinetics of the spiro-ring opening varied and could be correlated with the number of carbon atoms present in the n-alkyl substituents. Structural elucidation with X-ray diffraction and X-ray photoemission spectroscopic analyses provided further insight into the structure-function correlation in their Cu(II) complexes. These probes with Cu(II) coordination showed selectivity in signalling, high complexation affinity (log Ka = 4.8-8.8), high sensitivity (LOD = 4.1-80 nM), fast response time (rate = 0.0017-0.0159 s-1) and reversibility with counter anions, which ascertained their potential utility as chemosensors for Cu(II) ion detection.

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