128111-61-5Relevant articles and documents
Dual catalytic activity of amberlyst-15 in the large-scale and sustainable synthesis of dioctyl sodium sulfosuccinate (DOSS)
Fateh, Davod S.,Moghadam, Seyed M. M.,Salehi, Samie,Tarin, Mojtaba
, p. 555 - 559 (2020/07/17)
Dioctyl sodium sulfosuccinate (DOSS) as a unique material both as a drug and surfactant was synthesized by a facile and economical synthetic method. In this project, Amberlyst-15 was select-ed as a heterogeneous recyclable bronsted solid acid for this synthesis both in the esterification of ma-leic anhydride and sulfonation of dioctyl maleate (DOM) ester. This catalyst was easily recovered and reused at least for 13 consecutive cycles without a significant loss in the catalytic activity. In this paper, we wish to uncover a catalytic approach for the synthesis of DOSS through a recyclable, easily recov-erable, and commercially available catalyst, namely Amberlyst 15, under mild conditions.
A novel hydrogen-bonded silica-supported acidic ionic liquid: An efficient, recyclable and selective heterogeneous catalyst for the synthesis of diesters
Fareghi-Alamdari, Reza,Niri, Mehri Nadiri,Hazarkhani, Hassan
, (2018/05/28)
Abstract: In this study, two novel acidic ionic liquids, including a hydroxyl functionalized diacidic ionic liquid [HFDAIL] and a sulfonated diacidic ionic liquid [SFDAIL], were prepared and immobilized on the surface of silica nanoparticles (SNPs) via hydrogen bonding. The materials were characterized by FT-IR, NMR, SEM, nitrogen physisorption measurement, TGA and acid-base titration. The catalytic activity of the prepared catalysts was investigated in the synthesis of phthalate, maleate and succinate diesters under solvent-free conditions. It was found that nanosilica@[HFDAIL] with higher availability of acidic sites and higher hydrophilicity was more efficient compared to the nanosilica@[SFDAIL]. Notably, nanosilica@[HFDAIL] catalyst has also demonstrated excellent selectivity for the diester product while the monoester product was predominant in the case of nanosilica@[SFDAIL] even after prolonged reaction time or higher catalyst loading. In addition, the nanosilica@[HFDAIL] catalyst could be separated by simple filtration and reused several times without any significant loss of catalytic performance, but a remarkable decrease in activity was observed for nanosilica@[SFDAIL] in the next runs. GRAPHICAL ABSTRACT?: SYNOPSIS Two novel acidic ionic liquids, including a hydroxyl functionalized diacidic ionic liquid [HFDAIL] and a sulfonated diacidic ionic liquid [SFDAIL], were prepared and immobilized on the surface of silica nanoparticles via hydrogen bonding. The catalytic activity of the catalysts was investigated in the synthesis of diesters under solvent-free conditions.
Method for synthesizing di-2-ethylhexyl maleate
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Paragraph 0015-0017, (2017/08/30)
The invention relates to a method for synthesizing di-2-ethylhexyl maleate. The method comprises the following specific steps: adding maleic anhydride, diethylhexanol, methylbenzene and heteropolyacid catalyst H4[Ti(H2O)TiW11O39].7H2O into a three-opening bottle with a thermometer, a condensation pipe and a water distributer, wherein a molar ratio of the maleic anhydride to the diethylhexanol is 1 to (2.1 to 3.5), the consumption of the methylbenzene is 25 to 50 percent of the total weight of the materials, the consumption of the catalyst is 0.15 to 0.65 percent of the total weight of the materials, stirring, heating until reflux, reacting for 2 to 4 hours, distilling at normal pressure to recycle the methylbenzene, cooling, determining an acid value, filtering to recycle the catalyst, and decompression distilling to obtain a product. According to the method, the heteropolyacid H4[Ti(H2O)TiW11O39].7H2O is adopted as the catalyst to synthesize the di-2-ethylhexyl, so that while the corrosion and pollution problem is avoided, the method has the advantages of simplicity in operation, less consumption of catalyst, high activity, recyclability, high esterification rate and the like.
Subsititue Material As Well As Production Process And Application
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Paragraph 0095; 0096, (2017/08/28)
The invention relates to a production process of a functionalized material containing acid groups and an application thereof. The material is used as a nonhomogenous catalyst, and can be used for removing organic and inorganic compounds in product streams, process streams and waste liquid, or can be used as a cation and anion exchanger, a metal chromatography material, a solid phase purifying or extracting material, a fixed biological moleculaar material, a solid phase sythesizing material and a chromatography material. The invention also relates to a novel sulfonic acid or hypophosphorous organic funtionalized silica gel and metal salts thereof.
Synthesis and characterization of a new hydroxyl functionalized diacidic ionic liquid as catalyst for the preparation of diester plasticizers
Fareghi-Alamdari, Reza,Nadiri Niri, Mehri,Hazarkhani, Hassan
, p. 153 - 160 (2016/12/30)
Two new functionalized diacidic ionic liquids (FDAILs) including hydroxyl functionalized diacidic ionic liquid (HFDAIL) and sulfonated diacidic ionic liquid (SFDAIL) were synthesized and characterized by 1HNMR, 13CNMR and FT-IR. The catalytic activities of these FDAILs were examined in esterification reaction of anhydrides with some alcohols to give corresponding dialkyl plasticizers under solvent-free conditions. The results indicate that HFDAIL, as hydroxyl-bearing catalyst, show better catalytic performance. Under the optimum conditions, using HFDAIL, the conversion of phthalic anhydride was high and diester plasticizers were obtained with good to excellent yields in the presence of only 10?mol% of ionic liquid. All the produced diesters could be easily recovered due to their immiscibility with the ionic liquid. Recycling experiments suggests that these ionic liquids can be reused several times without remarkable loss in their catalytic activity.
FUNCTIONALISED MATERIALS, PROCESS FOR THE PRODUCTION AND USES THEREOF
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Paragraph 0041; 0052, (2015/04/22)
The invention relates both to processes for the production of functionalised materials containing alkyl sulfonic acids groups and their use as heterogeneous catalysts. The invention also relates to precursors of these new products and new organopolysiloxane sulfonic acids.
Diester amine adducts
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Page column 9, (2008/06/13)
Described are diester amine adducts of formula (1) wherein R1, R2, R3, R4are each independently of one another C4-C22alkyl; C2-C22alkenyl; or C5-C7cycloalkyl; X1and X2are each independently of the other hydrogen, C1-C4alkyl; C2-C4hydroxyalkyl or C2-C4hydroxyhaloalkyl; Y is a radical of formula (1b); A1is C2-C3alkylene or 2-hydroxy-n-propylene; X3is hydrogen; C1-C4alkyl, C2-C4hydroxyalkyl; or C2-C4hydroxyhaloalkyl; (A) is an asymmetrical carbon atom in the R- or S-configuration, wherein, if C1=R, C2=R; C1=S, C2=S; and C1=R; C2=S; m1is 1 or 2; and n is an integer from 1 to 4; p is 0 or 1; which adducts may be in the form of free bases or ammonium salts. Said compounds are precursors of compounds having good complex-forming properties and are thus able to effectively bind heavy metal ions such as iron, zinc, magnesium or copper ions and to prevent metal-initiated oxidations after enzymatic or chemical cleavage. They have a plurality of uses, for example in foods, beverages, derusting and decalcification baths, as additives in liquids for cooling-water circuits, in personal-care products, as bleaching stabilizers, in cleaning agents and detergents, in the textile industry and also as soft handle agents for organic fibre materials.
Chemistry in Water - Part VI. Catalytic Isomerization and Stereochemistry of Reduction of Acetylenics Mediated by Water-Soluble Phosphines
Larpent, Chantal,Meignan, Gerard
, p. 4331 - 4334 (2007/10/02)
Reaction of water-soluble phosphines with disubstituted electrodeficient alkynes in H2O (D2O) gives rise either to mixtures of cis and trans (dideuterated) olefins or specifically to trans (dideuterated) olefins, by simple control of the phosphine amount.A cis-trans olefin isomerization catalyzed by sulfonated phosphines occurs in water and allows the obtention of specifically trans disubstituted alkenes from the corresponding cis isomers.
Optically active surfactants - I - The first synthesis and properties of sodium bis [(S) ethyl-2-hexyl] sulfosuccinates ('Aerosol OT')
Larpent,Chasseray
, p. 3903 - 3914 (2007/10/02)
Optically pure (S) ethyl-2-hexan-1-ol (S)4 is prepared for the first time from (S) ethyl-2-hexanoic acid. Nucleophilic addition of sodium bisulfite on the bis [(S) ethyl-2-hexyl] maleate gives rise to an equimolar mixture of two optically active sodium bis [(S) ethyl-2-hexyl] sulfosuccinates diastereoisomers. The critical micelle concentration of these new optically active surfactants is almost identical to those of the well known racemic 'Aerosol OT'.
