Search Results - "alkyl group"

An unusual distribution of monomethylalkanes in Botryococcus Braunii-rich samples: Origin and significance. by Audino, Michiele, Grice, Kliti, Alexander, Robert, Boreham, Christopher, Kagi, Robert

“…Each member of a particular homologous series has a common alkyl group, each series differing to the next by two carbon atoms. …”
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Synthesis, local anaesthetic and antiarrhythmic activities of N-alkyl derivatives of proline anilides by Kalinin, D, Pantsurkin, Vladimir, Syropyatov, Boris, Kalinina, S, Rudakova, Irina, Vakhrin, Mikhail, Dolzhenko, Anton

“…We established that the local anaesthetic activity was sensitive to structural variations in the substitution pattern at the aromatic ring and the type of alkyl group at the proline nitrogen atom. Some of the prepared N-alkylproline anilides possessed significant antiarrhythmic activity with higher therapeutic indexes than the reference drugs.…”
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Alkyl-modified oligonucleotides as intercalating vehicles for doxorubicin uptake via albumin binding by Purdie, Laura, Alexander, Cameron, Spain, Sebastian G., Magnusson, Johannes P.

“…However, the cellular localization of the delivered doxorubicin, and ultimately the complex efficacy, is dependent on the nature of the linker between the alkyl group and the oligonucleotide.…”
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Synthesis, characterizations and anti-corrosion screening of sadimine and brosadimine / Nur Anis Atirah Zulkiflee by Zulkiflee, Nur Anis Atirah

“…A Schiff base is a compound that consists of carbon-nitrogen double bond with nitrogen connected to an aryl or alkyl group but not hydrogen. The objectives of this study are to synthesize Schiff bases ligands derived from salicylaldehyde and 5-bromosalicylaldehyde with ethylenediamine, to characterize the synthesized ligands and to carry out anti-corrosion screening on the Schiff bases ligands by weight loss method. …”
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Effect of modified clay on the morphological and thermal properties of PLA/PBAT nanocomposites by Osman, Mohd Junaedy, Ibrahim, Nor Azowa, Wan Yunus, Wan Md Zin

“…Increased interlayer spacing, reduced free water molecule within montmorillonite clay gallery spacing and existence of alkyl group signature confirmed that organomodified montmorillonite was successfully prepared via ion exchange technique. …”
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A New Type of Banana Shape Bifunctional Monomer of Ester Chalcones by Zainab, Ngaini, Mei Chee, Chua, Lian, Chin Lim

“…The hydroxyl chalcones, which differ in the length of alkyl group, CnH2n+1, where n= 10, 12 and 14 were synthesised via Claisen Schmidt condensation prior to the reaction with isophthaloyl dichloride. …”
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Synthesis and Applications of tert-Alkylphosphines by Barber, Thomas

“…Stereoelectronic properties of these ligands were measured and the variation in tert-alkyl group was shown to have a significant impact. …”
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Surface modification of cellulose nanocrystal isolated from oil palm biomass using formic acid hydrolysis at different temperature / Dian Nur Elleina Fatanah by Fatanah, Dian Nur Elleina

“…The modify CNC from both oil palm biomass show higher crystallinity index (~99%) compare to unmodified CNC (~70%) due to present of the hydrogen bonding between OH group in nanocellulose and alkyl group in Ts2O. The modify CNCs show face centered cubic (FCC) crystal structure. …”
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Corrosion inhibition, adsorption and thermodynamic properties of hydrophobic-tailed imines on carbon steel in hydrochloric acid solution: a comparative study by Mohd, Noor Khairin, Yeong, Shoot Kian, Ibrahim, Nor Azowa, Mohd Nor, Siti Mariam, Wan Yunus, Wan Md. Zin, Ghazali, Mariyam Jameelah, Lim, Wen Huei

“…In contrast, DMPHH-B, a compound with a branched alkyl group increased corrosion damage.…”
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Synthesis, Structural Characterization And Anticancer Studies Of Asymmetrical And Symmetrical Dinuclear Silver(I) Di-nheterocyclic Carbene Complexes by Nazri, Muhammad Zulhelmi

“…The asymmetrical bis-benzimidazolium salts were prepared in two different substituents series comprising N-(2-bromoethyl)-N’-benzylbenzimidazolium bromide with R-alkyl group (R = CH3, C2H5, C3H7, C4H9, C5H11 and C6H13) (1‧Br – 6‧Br) as the first series and R-aryl group (R = 2-CN, 3-CN and 4-CN) (7‧Br – 15‧PF6) as the second series consisting of ethylene, propylene and butylene bridges, respectively. …”
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Utilization of De-Oiled Spent Bleaching Clay as a Catalyst for Transesterification of Palm Olein by Rehan, Zainol Abidin, Gaanty Pragas, Maniam, Mohd Hasbi, Ab. Rahim

“…The reaction involves the breakage of the glycerol structure and exchanges of alkyl group between the alcohol and ester part of the triglycerides molecule; as such, the reaction is known as transesterification (Alba-Rubio et al., 2010). …”
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Optimization of solidifications/stabilization for petroleum-based waste using blended cement / Asna Mohd Zain by Asna, Mohd Zain

“…The reaction of silica and carboxylic acid with hydrocarbon formed cyclic siloxane and acid ester. 1H-NMR exhibits alkyl group’s hydrogen in the solidified sludge. Similar 1H groups were present in the leachate but inclusive of aromatic proton. 13C-NMR indicates the presence of straight chain alkane’s carbon in the solidified sludge. …”
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Modification of coconut coir as adsorbent in oil spill removal by Mohamad Mukhair, Hayati

“…The high intensity of C-H stretching for CH2 and CH3 also indicates an increasing of alkyl group in esterified coir. For PMA-g-coir, the presence of C=O stretching of an ester functional group of polymethyl acrylate (PMA) give evidence of grafting. …”
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Synthesis and characterisation of ionic mixed copper (ll) carboxylate complexes, K[n][Cu[2](p-OC[6]H[4]COO)[n](RCOO)[4]-[n\] as thermally stable solar cell materials / Lailatun Naz... by Ozair, Lailatun Nazirah

“…Their general formula is Kn[Cu2(p-OC6H4COO)n(RCOO)4-n], where n = 1-3, and R = saturated or unsaturated alkyl group. Two methods were used to prepare these complexes: one-pot and ligand-exchange reactions. …”
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Lipase-Catalyzed Synthesis Of Caffeic Acid Bornyl Ester by Yusof, Nurul Nadzirah Mohd

“…The synthesis of CABE was conducted by the screening of important parameters such as types of immobilized enzyme (Novozym 435, Lipozyme TLIM and Lipozyme RMIM), organic solvents (isooctane, n-hexane, n-heptane, toluene and n-hexane:acetone) and effect of alkyl group (methyl caffeate and ethyl caffeate) followed by investigating the effect of reaction parameters such as enzyme loading (25 – 250 U), reaction time (0 – 84 h), substrate ratio of borneol to ethyl caffeate (1:1, 1.5:1, 2:1, 2.5:1 and 3:1), reaction temperature (30 – 60°C) and optimum reaction conditions based on traditional one factor at a time (OFAT) method. …”
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Synthesis and antimicrobial studies of hydroxylated chalcone derivatives with variable chain length by Zainab, Ngaini, Siti M., Haris Fadzillah, Hasnain, Hussain

“…The synthesised chalcone derivatives consisted of hydroxyl groups at either ortho, meta or para position and differed in the length of the alkyl groups, CnH2nþ1, where n¼6, 10, 12 and 14. The structures of all compounds were defined by elemental analysis, IR, 1H- and 13C-NMR. …”
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Synthesis of Glycosides Bearing Chalcone Derivatives via Ferrier Rearrangement by Zainab, Ngaini, Dayang H., Abang Kamaluddin

“…The compounds differ in the length of alkyl groups, CnH2n+1, where n= 7, 8 and 9.…”
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Synthesis and characterization of chalcone-substituted phosphazenes by Zainab, Ngaini, Norashikin Irdawaty, Abd Rahman

“…The compounds differ in the length of alkyl groups, CnH2n+1, where n = 10, 12, and 14.…”
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Synthesis and Characterization of Cyclotriphosphazenes Bearing Chalcones Derivatives by Zainab, Ngaini, Norashikin Irdawaty, Abd Rahman

“…The compounds differ in the length of alkyl groups, CnH2n+1, where n = 10, 12, and 14, respectively. …”
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Preparation and characterization of poly (e-caprolactone)/TiO2 micro-composites by M., Shoja, K., Shameli, Ahmad @ Ayob, Mansor, Z., Zakaria

“…The FTIR spectra indicated that the C=O of PCL shifted when TiO2MPs was added, indicating that some Van der Waals bonding between the alkyl groups of TiO2 and the ester group of PCL were formed. …”
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