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Journal articles on the topic 'Alkyl Ether Carboxylate'

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1

Liepa, AJ, AJ Liepa, JS Wilkie, JS Wilkie, KN Winzenberg, and KN Winzenberg. "Preparation of Some 1-Alkyl-4-[1-(ethoxyimino)butyl]-3-hydroxy-5-oxocyclohex-3-ene-1-carboxylic Acid Ester and Amide Herbicides by Reductive Alkylation of 3,5-Dimethoxybenzoic Acid." Australian Journal of Chemistry 42, no. 8 (1989): 1217. http://dx.doi.org/10.1071/ch9891217.

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Reductive alkylation of 3,5-dimethoxybenzoic acid with haloalkanes afforded the 1-alkyl- 3,5-dimethoxycyclohexa-2,5-diene-1-carboxylic acid derivatives (3a-e) which, upon esterification and hydrolysis, furnished methyl 1-alkyl-3-hydroxy-5-oxocyclohex-3-ene-l-carboxylate derivatives (4f-j). Reaction of (4f-j) with butyric anhydride gave methyl 1-alkyl-4-butyryl- 3-hydroxy-5-oxocyclohex-3-ene-1-carboxylate derivatives (6a-e) which were converted into methyl 1-alkyl-4-[1-( ethoxyimino )butyl]-3-hydroxy-5-oxocyclohex-3-ene-1-carbo xyate derivatives (2a-e). Similarly, the oxime O-ether derivative (
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2

Yue, Xiu, Xiaoyun Fan, Qintang Li, Xiao Chen, and Chuanyi Wang. "Aggregation behaviors of alkyl ether carboxylate surfactants in water." Journal of Molecular Liquids 227 (February 2017): 161–67. http://dx.doi.org/10.1016/j.molliq.2016.12.010.

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3

Liu, Ziyu, Lei Zhang, Xulong Cao, et al. "Effect of Electrolytes on Interfacial Tensions of Alkyl Ether Carboxylate Solutions." Energy & Fuels 27, no. 6 (2013): 3122–29. http://dx.doi.org/10.1021/ef400458q.

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4

Myrdek, Thomas, Crisan Popescu, and Werner Kunz. "Physical-chemical properties of newly synthesized tetraalkylammonium alkyl ether carboxylate ionic liquids." Journal of Molecular Liquids 322 (January 2021): 114947. http://dx.doi.org/10.1016/j.molliq.2020.114947.

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5

Yang, Zhiqiang, Benjamin J. Dennis-Smither, Zhuoran Xu, et al. "Kinetic and Spectroscopic Studies of Methyl Ester Promoted Methanol Dehydration to Dimethyl Ether on ZSM-5 Zeolite." Chemistry 5, no. 1 (2023): 511–25. http://dx.doi.org/10.3390/chemistry5010037.

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Methyl carboxylate esters have been shown to be potent promoters of low-temperature methanol dehydration to dimethyl ether (DME) using various zeolite catalysts. In the present work, catalytic kinetic studies, in-situ Fourier-transform infrared spectroscopy (FT-IR) and solid-state nuclear magnetic resonance spectroscopy (NMR) techniques were used to elucidate the promotional mechanism of methyl carboxylate esters on methanol dehydration to DME, using the medium pore zeolite H-ZSM-5 (MFI) as the catalyst. Kinetic studies were performed using the very potent methyl n-hexanoate promoter. The DME
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6

Warashina, Takuya, Daisuke Matsuura, Tetsuya Sengoku, Masaki Takahashi, Hidemi Yoda, and Yoshikazu Kimura. "Regioselective Formylation of Pyrrole-2-Carboxylate: Crystalline Vilsmeier Reagent vs Dichloromethyl Alkyl Ether." Organic Process Research & Development 23, no. 4 (2018): 614–18. http://dx.doi.org/10.1021/acs.oprd.8b00233.

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7

Xu, Hujun, and Yuanhong Xu. "Study of the Complex System of Fatty Alcohol Polyoxyethylene Ether Carboxylate and Alkyl Betaine for Heavy Oil Recovery." Tenside Surfactants Detergents 54, no. 6 (2017): 546–50. http://dx.doi.org/10.3139/113.110532.

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8

Denk, Patrick, Asmae El Maangar, Jyotsana Lal, David Kleber, Thomas Zemb, and Werner Kunz. "Phase diagrams and microstructures of aqueous short alkyl chain polyethylene glycol ether carboxylate and carboxylic acid triblock surfactant solutions." Journal of Colloid and Interface Science 590 (May 2021): 375–86. http://dx.doi.org/10.1016/j.jcis.2021.01.061.

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9

Yunusov, Timur, Alexandra Scerbacova, Aliya Mukhametdinova, Denis Bakulin, and Alexey Cheremisin. "Investigation of alkyl ether carboxylate surfactant flooding efficiency in carbonate reservoirs using NMR and X-ray in situ saturation monitoring techniques." Fuel 400 (November 2025): 135820. https://doi.org/10.1016/j.fuel.2025.135820.

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10

MD AKHIR, NUR ASYRAF, AFIF IZWAN ABD HAMID, ISMAIL MOHD SAAID, and ANITA RAMLI. "THE EFFECT OF HARDNESS AND TEMPERATURE ON INTERFACIAL TENSION OF INDIVIDUAL AND MIXED SURFACTANT SYSTEM." Science Proceedings Series 2, no. 1 (2020): 62–65. http://dx.doi.org/10.31580/sps.v2i1.1280.

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Surfactant flooding is one of the chemical enhanced oil recovery (CEOR) techniques that can be used to improve oil recovery. The surfactant injection reduces the oil-water interfacial tension and mobilizes residual oil towards the producing well. In this paper, the performance of alkyl ether carboxylate (AEC) and calcium lignosulfonate (CLS) in individual and mixed surfactant systems were investigated based on their ability to reduce the interfacial tension through a spinning drop method. The interfacial tensions of individual and mixed surfactant systems in different brine systems were measur
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11

Vodrážka, Petr, Lucie Řimnáčová, Petra Berková, et al. "A New, Validated GC-PICI-MS Method for the Quantification of 32 Lipid Fatty Acids via Base-Catalyzed Transmethylation and the Isotope-Coded Derivatization of Internal Standards." Metabolites 15, no. 2 (2025): 104. https://doi.org/10.3390/metabo15020104.

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Background: Fatty acids (FAs) represent a ubiquitous class of nonpolar alkyl carboxylate metabolites with diverse biological functions. Nutrition, metabolism, and endogenous and exogenous stress influence the overall FA metabolic status and transport via the bloodstream. FAs esterified in lipids are of particular interest, as they represent promising biomarkers of pathological diseases and nutritional status. Methods: Here, we report a validated gas chromatographic-mass spectrometric (GC-MS) method for the quantitative analysis of 32 FAs exclusively bound in esterified lipids. The developed sa
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12

Hu, Xiao-Qiang, Zhiyong Hu, A. Stefania Trita, Guodong Zhang, and Lukas J. Gooßen. "Carboxylate-directed C–H allylation with allyl alcohols or ethers." Chemical Science 9, no. 23 (2018): 5289–94. http://dx.doi.org/10.1039/c8sc01741g.

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13

Chiappisi, Leonardo, Ingo Hoffmann, and Michael Gradzielski. "Membrane stiffening in Chitosan mediated multilamellar vesicles of alkyl ether carboxylates." Journal of Colloid and Interface Science 627 (December 2022): 160–67. http://dx.doi.org/10.1016/j.jcis.2022.07.006.

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14

K�nig, Hans, and Werner Strobel. "Separation, identification and determination of alkyl- and alkylphenol ether carboxylates by HPLC." Fresenius' Journal of Analytical Chemistry 338, no. 6 (1990): 728–31. http://dx.doi.org/10.1007/bf00323415.

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15

Xu, Wei, and Li Fen Hao. "Preparation of Carboxylated Polysiloxane and its Application in Leather Waterproofing." Advanced Materials Research 496 (March 2012): 519–22. http://dx.doi.org/10.4028/www.scientific.net/amr.496.519.

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A dodecyl/amino functionalized polysiloxane (RASO) was firstly prepared by copolymerization of octamethylcyclotetrasiloane (D4), aminopropylmethyldiethoxysilane (KH-551), dodecylmethyldimethoxysilane (HD-109), and hexamethydisiloxane (MM) under basic catalyst. Then novel carboxylated polysiloxane (RCAS) was prepared by reaction of RASO with maleic anhydride. Finally RCAS was emulsified with alkyl alcohol polyoxyethylene ether (AEO) to form RCAS emulsions which were utilized in leather waterproofing. The as-synthesized RCAS was characterized by FT-IR, 1H-NMR, TEM, and Particles size distributio
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16

Heo, Tae-Young, Inhye Kim, Liwen Chen, Eunji Lee, Sangwoo Lee, and Soo-Hyung Choi. "Effect of Ionic Group on the Complex Coacervate Core Micelle Structure." Polymers 11, no. 3 (2019): 455. http://dx.doi.org/10.3390/polym11030455.

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Pairs of ionic group dependence of the structure of a complex coacervate core micelle (C3M) in an aqueous solution was investigated using DLS, cryo-TEM, and SANS with a contrast matching technique and a detailed model analysis. Block copolyelectrolytes were prepared by introducing an ionic group (i.e., ammonium, guanidinium, carboxylate, and sulfonate) to poly(ethylene oxide-b-allyl glycidyl ether) (NPEO = 227 and NPAGE = 52), and C3Ms were formed by simple mixing of two oppositely-charged block copolyelectrolyte solutions with the exactly same degree of polymerization. All four C3Ms are spher
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17

Illous, Estelle, Simon Doblinger, Silvio Pipolo, Jesús F. Ontiveros, Raphaël Lebeuf, and Jean-Marie Aubry. "Salt-tolerance of alkyl-glyceryl ether carboxylates hydrotropes and surfactants. Dramatic effect of the methylation of the glyceryl spacer." Journal of Colloid and Interface Science 585 (March 2021): 808–19. http://dx.doi.org/10.1016/j.jcis.2020.10.061.

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18

Carruthers, William, and Roger C. Moses. "Cycloaddition of 2,3,4,5-tetrahydropyridine N-oxide to isobutyl vinyl ether and allyl alcohol; methyl 2- formylmethylpiperidine-1-carboxylate." Journal of the Chemical Society, Perkin Transactions 1, no. 8 (1988): 2251. http://dx.doi.org/10.1039/p19880002251.

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19

Tejedor, David, Gabriela Méndez-Abt, and Fernando García-Tellado. "A Convenient Domino Access to Substituted Alkyl 1,2-Dihydropyridine-3-carboxylates from Propargyl Enol Ethers and Primary Amines." Chemistry - A European Journal 16, no. 2 (2010): 428–31. http://dx.doi.org/10.1002/chem.200902140.

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20

Hon, Yung-Son, Ying-Chieh Wong та Kuo-Jui Wu. "A Convenient and Versatile Method for the Preparation of α-Hydroxymethyl Ketone Derivatives from the Corresponding Allyl Silyl Ethers or Allyl Carboxylates". Journal of the Chinese Chemical Society 55, № 4 (2008): 896–914. http://dx.doi.org/10.1002/jccs.200800134.

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21

JananyaSampuntharat, Boonkoom Praewpatoo, Y. Takagi, et al. "An Alkyl Ether Carboxylate and Alkyl Carboxylate Formulated Cleanser Decreases Facial Sebum and Inflammatory Acne Without Inducing Dry Xerotic Skin in Thai Females." June 22, 2015. https://doi.org/10.19070/2332-2977-1500016.

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Many Thai females feel that their facial skin is oily and suffer from acne. Previously we have confirmed that a facial cleanser formulated with alkyl ether carboxylate (AEC) and alkyl carboxylate (AC) effectively removed sebum and decreased acne prompt without inducing dry skin on Japanese male subjects. In this study, we evaluated the efficacy of this formulated facial cleanser on Thai female subjects with moderate or mild grade acne in Bangkok, Thailand. We designed a controlled clinical trial. Sixteen female subjects used AEC/AC formulated cleanser twice a day after discontinuing their curr
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22

Perry, Alexis, and Owaen Guppy. "Regio‐ and stereoselective alkyl enol ether synthesis via microwave‐promoted, base‐catalysed alkyne hydroalkoxylation." European Journal of Organic Chemistry, February 19, 2025. https://doi.org/10.1002/ejoc.202500091.

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The diverse reactivity presented by alkyl enol ethers underpins a wide range of synthetically significant processes. Their synthesis is often achieved by atom‐economical alkyne hydroalkoxylation (i.e., addition of an alcohol across an alkyne), either using superbasic conditions or transition metal catalysis. Unfortunately, the harsh conditions of the former approach limit substrate tolerance whilst the latter approach often requires inert, anhydrous conditions and exotic, expensive catalysts. In order to pursue more convenient, general and sustainable methodology for enol ether synthesis, we h
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23

Duan, Yongwei, Yanpeng Li, Boru Chen, Chi Ai, and Jun Wu. "Preparation and performance evaluation of a novel temperature-resistant anionic/nonionic surfactant." Scientific Reports 14, no. 1 (2024). http://dx.doi.org/10.1038/s41598-024-56342-5.

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AbstractAiming at oil extraction from a tight reservoir, the Jilin oil field was selected as the research object of this study. Based on the molecular structures of conventional long-chain alkyl anionic surfactants, a new temperature-resistant anionic/nonionic surfactant (C8P10E5C) was prepared by introducing polyoxyethylene and polyoxypropylene units into double-chain alcohols. The resulting structures were characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (1H-NMR), and electrospray ionization mass spectrometry (ESI–MS). Then, based on s
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24

Sampuntharat, Jananya, Praewpatoo Boonkoom, Takagi Y, et al. "An Alkyl Ether Carboxylate and Alkyl Carboxylate Formulated Cleanser Decreases Facial Sebum and Inflammatory Acne Without Inducing Dry Xerotic Skin in Thai Females." International Journal of Clinical Dermatology & Research, June 22, 2015, 60–64. http://dx.doi.org/10.19070/2332-2977-1500016.

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25

Scerbacova, Alexandra, Ilia Kopanichuk, and Alexey Cheremisin. "Effect of temperature and salinity on interfacial behavior of alkyl ether carboxylate surfactants." Petroleum Science and Technology, April 19, 2022, 1–20. http://dx.doi.org/10.1080/10916466.2022.2064872.

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26

Herbinski, Aurélien, Estelle Illous, Estelle Métay, Jesus F. Ontiveros, Jean‐Marie Aubry, and Marc Lemaire. "Eco‐conception of Highly Salt‐Tolerant Alkyl Ether Carboxylate Hydrotropes with a Glyceryl Spacer." Chemistry – A European Journal, April 5, 2022. http://dx.doi.org/10.1002/chem.202200274.

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27

Scerbacova, Alexandra, Elena Kozlova, Ahmed Barifcani, Chi Minh Phan, Tagir Karamov та Alexey Cheremisin. "Rock–Fluid Interactions of Alkyl Ether Carboxylate Surfactants with Carbonates: Wettability Alteration, ζ-Potential, and Adsorption". Energy & Fuels, 9 лютого 2023. http://dx.doi.org/10.1021/acs.energyfuels.2c04099.

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28

Kopanichuk, Ilia, Alexandra Scerbacova, Anastasia Ivanova, Alexey Cheremisin, and Aleksey Vishnyakov. "The effect of the molecular structure of alkyl ether carboxylate surfactants on the oil-water interfacial tension." Journal of Molecular Liquids, June 2022, 119525. http://dx.doi.org/10.1016/j.molliq.2022.119525.

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29

Myrdek, Thomas, Michael Stapels, and Werner Kunz. "Newly synthesized Ionic Liquids as potent lubricants and additives to existing lubricant oils." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, November 25, 2021, 135065012110601. http://dx.doi.org/10.1177/13506501211060121.

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Ionic Liquids are promising candidates for next generation green lubricants. We have synthesized 39 Tetraalkylammonium Alkyl Ether Carboxylate Ionic Liquids and tested them for their lubricant capabilities. We measured friction coefficient to assess the transition from the boundary to the hydrodynamic lubrication, the hydrodynamic area and the minimum friction value. Some Ionic Liquids are capable of forming a hydrodynamic layer fully separating two specimens. Compounds with short C-chain of the cationic part show poor tribological behaviour. Similarly, increasing the PO-degree of the anionic
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30

Al-Badi, Aisha, Maissa Souayeh, Rashid S. Al-Maamari, and Mohamed Aoudia. "Impact of the molecular structural variation of alkyl ether carboxylate surfactant on IFT reduction and wettability alteration capabilities in carbonates." Geoenergy Science and Engineering, December 2022, 211395. http://dx.doi.org/10.1016/j.geoen.2022.211395.

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31

Belhaj, Ahmed Fatih, Khaled Abdalla Elraies, Juhairi Aris Shuhili, Syed Mohammad Mahmood, Raj Deo Tewari, and Mohamad Sahban Alnarabiji. "Static Adsorption Evaluation for Anionic-Nonionic Surfactant Mixture on Sandstone in the Presence of Crude Oil at High Reservoir Temperature Condition." SPE Reservoir Evaluation & Engineering, February 1, 2022, 1–12. http://dx.doi.org/10.2118/209208-pa.

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Summary The application of surfactants in enhanced oil recovery (EOR) has revealed over the years various challenges that impose limitations on the successful implementation of surfactant flooding. Surfactant adsorption is one of the most important aspects that strongly dictates the feasibility of surfactant-based EOR. The effect of the presence of crude oil on surfactant adsorption and the influence of surfactant partitioning on the adsorption quantification are presented in this paper. Static adsorption experiments were conducted in this study for a surfactant mixture [alkyl ether carboxylat
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32

SHOBANA, N., and P. SHANMUGAM. "ChemInform Abstract: Sodium Hydrogen Telluride - A New Convenient Reagent for Deblocking Allyl Carboxylates and Allyl Phenyl Ethers." Chemischer Informationsdienst 17, no. 44 (1986). http://dx.doi.org/10.1002/chin.198644072.

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33

CARRUTHERS, W., and R. C. MOSES. "ChemInform Abstract: Cycloaddition of 2,3,4,5-Tetrahydropyridine N-Oxide to Isobutyl Vinyl Ether and Allyl Alcohol; Methyl 2-Formylmethylpiperidine-1-carboxylate." ChemInform 19, no. 50 (1988). http://dx.doi.org/10.1002/chin.198850181.

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34

Tejedor, David, Gabriela Mendez-Abt, and Fernando Garcia-Tellado. "ChemInform Abstract: A Convenient Domino Access to Substituted Alkyl 1,2-Dihydropyridine-3-carboxylates from Propargyl Enol Ethers and Primary Amines." ChemInform 41, no. 20 (2010). http://dx.doi.org/10.1002/chin.201020112.

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