Category: ethers-buliding-blocks

Effect of didodecyldimethylammonium bromide on the phase behavior of nonionic surfactant-silicone oil microemulsions was written by Silas, James A.;Kaler, Eric W.;Hill, Randal M.. And the article was included in Langmuir in 2001.Computed Properties of C10H22O3 The following contents are mentioned in the article:

The effects of adding didodecyldimethylammonium bromide (DDAB) to mixtures of n-alkyl polyglycol ether (C_iE_j), water, and silicone oil are systematically studied. In mixtures of C₈E₃ and C₁₂E₆ with water, small amounts of DDAB cause the upper miscibility gap to vanish and be replaced by a high-temperature lamellar phase. In mixtures of C₁₂E₅ with octamethylcyclotetrasiloxane (D₄), the addition of DDAB makes the surfactant mixture more hydrophilic and expands the lower miscibility gap by increasing the (pseudo)-critical temperature In ternary mixtures of C_iE_j, D₄, and water, adding DDAB increases the surfactant efficiency by a factor of ≤3, expanding the single-phase microemulsion region to higher temperatures and lower surfactant concentrations The temperature limits of the single-phase microemulsion correlate with changes in the pseudo-binary phase diagrams upon addition of DDAB. Addnl., the surfactant mixture stabilizes liquid crystalline regions, but at temperatures that do not obscure the gains in surfactant efficiency offered by the ionic-nonionic surfactant mixture Similar results are reported for 2 linear silicone oils, hexamethyldisiloxane, and decamethyltetrasiloxane. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Computed Properties of C10H22O3).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Computed Properties of C10H22O3

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Impact of cooking and drying operations on color, curcuminoids, and aroma of Curcuma longa L. was written by Yin, Molika;Weil, Mathieu;Avallone, Sylvie;Lebrun, Marc;Conejero, Genevieve;In, Sokneang;Bohuon, Philippe. And the article was included in Journal of Food Processing and Preservation in 2022.Electric Literature of C19H16O4 The following contents are mentioned in the article:

Effects of cooking and drying on color, curcuminoids, essential oil, and aroma compounds of Curcuma longa L. were assessed. Sliced fresh turmeric rhizomes were air-dried at 60°C directly or after cooking at 95°C for 3 or 90 min. Microscopic observations showed that curcuminoids and essential oil are located in different dedicated cells. Curcuminoids and essential oil of dried turmeric were both around 10% db. After processing, curcuminoids were dispersed throughout the matrix. Drastic cooking and drying operations decreased chromatic values more than smooth cooking. Cooking had no impact on curcuminoid and essential oil contents and slightly modified the aromatic profile of essential oils. Drying decreased the curcuminoid (<38%) and essential oil (<13%) contents. Turmeric starchy matrix preserves the curcuminoids and essential oil during the process. We recommend a preliminary smooth cooking step to reduce the drying time, save energy consumption and preserve turmeric quality. Our study brings us to propose better practices for turmeric processing. A smooth cooking (95°C/3 min) before drying is recommended to preserve the quality of the turmeric as the curcuminoids and essential oil are preserved during cooking. This protection could be linked to the starchy structure of the turmeric matrix. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Electric Literature of C19H16O4).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Electric Literature of C19H16O4

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

One-Pot Conversion of Lignin into Naphthenes Catalyzed by a Heterogeneous Rhenium Oxide-Modified Iridium Compound was written by Li, Xinxin;Zhang, Bo;Pan, Xiaoli;Ji, Jianwei;Ren, Yujing;Wang, Hua;Ji, Na;Liu, Qiying;Li, Changzhi. And the article was included in ChemSusChem in 2020.Product Details of 103-16-2 The following contents are mentioned in the article:

The direct transformation of lignin into fuels and chems. remains a huge challenge because of the recalcitrant and complicated structure of lignin. In this study, rhenium oxide-modified iridium supported on SiO₂ (Ir-ReO_x/SiO₂) is employed for the one-pot conversion of various lignin model compounds and lignin feedstocks into naphthenes. Up to 100% yield of cyclohexane from model compounds and 44.3% yield of naphthenes from lignin feedstocks are achieved. 2 D HSQC NMR spectroscopy before and after the reaction confirms the activity of Ir-ReO_x/SiO₂ in the cleavage of the C-O bonds and hydrodeoxygenation of the depolymerized products. H₂ temperature-programmed reduction, temperature-programmed desorption of NH₃, IR spectroscopy of pyridine adsorption, XPS, X-ray absorption fine structure anal., and control experiments reveal that a synergistic effect between Ir and ReO_x in Ir-ReO_x/SiO₂ plays a crucial role in the high performance; ReO_x is mainly responsible for the cleavage of C-O bonds, whereas Ir is responsible for hydrodeoxygenation and saturation of the benzene rings. This methodol. opens up an energy-efficient route for the direct conversion of lignin into valuable naphthenes. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Product Details of 103-16-2).

4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Product Details of 103-16-2

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Ether – Wikipedia,
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One-Pot Conversion of Lignin into Naphthenes Catalyzed by a Heterogeneous Rhenium Oxide-Modified Iridium Compound was written by Li, Xinxin;Zhang, Bo;Pan, Xiaoli;Ji, Jianwei;Ren, Yujing;Wang, Hua;Ji, Na;Liu, Qiying;Li, Changzhi. And the article was included in ChemSusChem in 2020.Safety of 4-Benzyloxyphenol The following contents are mentioned in the article:

The direct transformation of lignin into fuels and chems. remains a huge challenge because of the recalcitrant and complicated structure of lignin. In this study, rhenium oxide-modified iridium supported on SiO₂ (Ir-ReO_x/SiO₂) is employed for the one-pot conversion of various lignin model compounds and lignin feedstocks into naphthenes. Up to 100% yield of cyclohexane from model compounds and 44.3% yield of naphthenes from lignin feedstocks are achieved. 2 D HSQC NMR spectroscopy before and after the reaction confirms the activity of Ir-ReO_x/SiO₂ in the cleavage of the C-O bonds and hydrodeoxygenation of the depolymerized products. H₂ temperature-programmed reduction, temperature-programmed desorption of NH₃, IR spectroscopy of pyridine adsorption, XPS, X-ray absorption fine structure anal., and control experiments reveal that a synergistic effect between Ir and ReO_x in Ir-ReO_x/SiO₂ plays a crucial role in the high performance; ReO_x is mainly responsible for the cleavage of C-O bonds, whereas Ir is responsible for hydrodeoxygenation and saturation of the benzene rings. This methodol. opens up an energy-efficient route for the direct conversion of lignin into valuable naphthenes. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Safety of 4-Benzyloxyphenol).

4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Safety of 4-Benzyloxyphenol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Development of a degrader against oncogenic fusion protein FGFR3-TACC3 was written by Shibata, Norihito;Cho, Nobuo;Koyama, Hiroo;Naito, Mikihiko. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2022.Electric Literature of C3H9NO The following contents are mentioned in the article:

Fibroblast growth factor receptor 3-transforming acidic coiled-coil containing protein 3 (FGFR3-TACC3), which has been identified in many cancers such as glioblastoma and bladder cancer, is a potent oncogenic fusion protein that induces constitutive activation of FGFR signaling, resulting in uncontrolled cell proliferation. Although several tyrosine kinase inhibitors against FGFR are currently under development, resistance to such types of inhibitors in patients has become a concern. In this study, a chimeric mol. SNIPER(TACC3)-11 I was developed and found to reduce FGFR3-TACC3 levels effectively. Compound I conjugated KHS108 (a TACC3 ligand) to an LCL161 derivative II (an inhibitor of apoptosis protein [IAP] ligand) with a PEG linker (n = 2). Mechanistical anal. showed that cellular IAP1 was required for the reduction of FGFR3-TACC3 levels. Consistent with the decrease in FGFR3-TACC3 levels, compound I suppressed the growth of FGFR3-TACC3 pos. cells. Thus, compound I is a candidate therapeutic with a novel drug modality against cancers that exhibit FGFR3-TACC3-dependent proliferation and exerts pharmacol. effects distinct from FGFR3 kinase inhibitors because it lacks substructures crucial for kinase inhibition. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3Electric Literature of C3H9NO).

2-Methoxyethylamine (cas: 109-85-3) belongs to ethers. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Electric Literature of C3H9NO

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Production and characterization of bio-oil and biochar from ablative pyrolysis of lignocellulosic biomass residues was written by Khuenkaeo, Nattawut;Tippayawong, Nakorn. And the article was included in Chemical Engineering Communications in 2020.Reference of 2380-78-1 The following contents are mentioned in the article:

Agricultural residues are one of the large untapped sources of bio-energy in Thailand, with over 30 million tons available per yr. They may be utilized to generate renewable liquid and solid fuels. In this work, pyrolysis of lignocellulosic biomass residues (corncobs, coconut shells, and bamboo residue) was carried out in an ablative pyrolysis reactor with rotating blades. Influences of inert carrier gas flows (5-15 L/min) and rotating frequency (4-8 Hz) at a fixed hot plate temperature of 500 °C on generating bio-oil were investigated. Characterization of bio-oil as well as biochar products was performed. Maximum bio-oil yield was found to be about 50% weight/weight for coconut shell at 5 L/min of flowrate and 8 Hz of the rotating frequency, and 45% weight/weight for bamboo residues at the same condition. For corncob, the highest bio-oil yield was 72% weight/weight at 5 L/min of flowrate and 6 Hz of the rotating frequency. Solid char yields were around 23-28% weight/weight The heating values of the liquid oil and solid char were about 20-25 and 23-30 MJ/kg, resp. Rotating blade ablative reactor was able to generate high yields of bio-oil for agricultural residues. The main compounds of the bio-oil obtained were phenolics, including furfuran, organic acids, aldehydes, alcs., ethers, and ketones. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Reference of 2380-78-1).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Reference of 2380-78-1

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

A comparative study of pyrolysis liquids by slow pyrolysis of industrial hemp leaves, hurds and roots was written by Salami, Ayobami;Heikkinen, Jorma;Tomppo, Laura;Hyttinen, Marko;Kekalainen, Timo;Janis, Janne;Vepsalainen, Jouko;Lappalainen, Reijo. And the article was included in Molecules in 2021.Reference of 2380-78-1 The following contents are mentioned in the article:

This study assessed the pyrolysis liquids obtained by slow pyrolysis of industrial hemp leaves, hurds, and roots. The liquids recovered between a pyrolysis temperature of 275-350°C, at two condensation temperatures 130°C and 70°C, were analyzed. Aqueous and bio-oil pyrolysis liquids were produced and analyzed by proton NMR (NMR), gas chromatog.-mass spectrometry (GC-MS), and atm. pressure photoionization Fourier transform ion cyclotron resonance mass spectrometry (APPI FT-ICR MS). NMR revealed quant. concentrations of the most abundant compounds in the aqueous fractions and compound groups in the oily fractions. In the aqueous fractions, the concentration range of acetic acid was 50-241 gL-1, methanol 2-30 gL-1, propanoic acid 5-20 gL-1, and 1-hydroxybutan-2-one 2 gL-1. GC-MS was used to compare the compositions of the volatile compounds and APPI FT-ICR MS was utilized to determine the most abundant higher mol. weight compounds The different obtained pyrolysis liquids (aqueous and oily) had various volatile and nonvolatile compounds such as acetic acid, 2,6-dimethoxyphenol, 2-methoxyphenol, and cannabidiol. This study provides a detailed understanding of the chem. composition of pyrolysis liquids from different parts of the industrial hemp plant and assesses their possible economic potential. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Reference of 2380-78-1).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Reference of 2380-78-1

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Starch isolation from turmeric dye extraction residue and its application in active film production was written by Maniglia, Bianca Chieregato;Silveira, Thamiris Maria Garcia;Tapia-Blacido, Delia Rita. And the article was included in International Journal of Biological Macromolecules in 2022.HPLC of Formula: 33171-05-0 The following contents are mentioned in the article:

In this study, we have isolated starch from turmeric dye extraction residue by steeping in acid medium (AS), steeping in water (WS), or steeping in alk. medium (KS) and assessed the filmogenic capacity of the resulting starches. We have also characterized the chem. composition, morphol., swelling power, solubility, crystallinity, and active properties of the AS, WS, and KS starches and investigated the mech., functional, antioxidant, and antimicrobial properties of the corresponding films. The AS and KS starches showed lower apparent amylose content and higher purity, relative crystallinity, swelling power, and solubility than the WS starch. All the starches retained phenolic compounds and curcuminoids; their phenolic and curcuminoid contents were higher than the contents in the residue, especially in the case of the AS starch, which yielded films with the best antioxidant and antimicrobial activities. The AS and KS starches yielded films that were more resistant at break, less soluble in water, and less hydrophilic than the film obtained from the WS starch. Thus, submitting turmeric dye extraction residue to AS in ascorbic acid yielded a starch that resulted in films with good mech. properties and better antioxidant and antimicrobial properties, to ensure safe and prolonged food shelf life. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0HPLC of Formula: 33171-05-0).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.HPLC of Formula: 33171-05-0

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Lower critical solution temperature (LCST) phase separation of glycol ethers for forward osmotic control was written by Nakayama, Daichi;Mok, Yeongbong;Noh, Minwoo;Park, Jeongseon;Kang, Sunyoung;Lee, Yan. And the article was included in Physical Chemistry Chemical Physics in 2014.SDS of cas: 112-59-4 The following contents are mentioned in the article:

Lower critical solution temperature (LCST) phase transition of glycol ether (GE)-water mixtures induces an abrupt change in osmotic pressure driven by a mild temperature change. The temperature-controlled osmotic change was applied for the forward osmosis (FO) desalination. Among three GEs evaluated, di(ethylene glycol) n-hexyl ether (DEH) was selected as a potential FO draw solute. A DEH-water mixture with a high osmotic pressure could draw fresh water from a high-salt feed solution such as seawater through a semipermeable membrane at around 10 °C. The water-drawn DEH-water mixture was phase-separated into a water-rich phase and a DEH-rich phase at around 30 °C. The water-rich phase with a much reduced osmotic pressure released water into a low-salt solution, and the DEH-rich phase was recovered into the initial DEH-water mixture The phase separation behavior, the residual GE concentration in the water-rich phase, the osmotic pressure of the DEH-water mixture, and the osmotic flux between the DEH-water mixture and salt solutions were carefully analyzed for FO desalination. The liquid-liquid phase separation of the GE-water mixture driven by the mild temperature change between 10 °C and 30 °C is very attractive for the development of an ideal draw solute for future practical FO desalination. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4SDS of cas: 112-59-4).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.SDS of cas: 112-59-4

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Quality assessment and RP-HPLC method development for estimation of curcuminoids in Curcuma longa: A Quality by Design approach was written by Parab Gaonkar, Vishakha;Hullatti, Kirankumar. And the article was included in Journal of Liquid Chromatography & Related Technologies in 2021.Application In Synthesis of Bisdemethoxycurcumin The following contents are mentioned in the article:

The present work aims at developing a QbD assisted RP-HPLC method for the estimation of individual curcuminoids in Curcuma longa rhizomes along with its quality assessment. The quality of crude C. longa sample was evaluated with respect to physicochem., phytochem. and toxic contaminant anal. The ATP and CQA’s were identified followed by the optimization of the method by employing 22 factorial design. The concentration of orthophosphoric acid in aqueous phase (X1) and mobile phase ratio (X2) were selected as independent variable whereas, Tailing factor CUR (R1), peak width CUR (R2), Tailing factor DMC (R3), peak width DMC (R4), Tailing factor BDC (R5), and peak width BDC (R6) selected as dependent variables. The optimized chromatog. conditions were identified with mobile phase, Acetonitrile and Water (0.02%OPA) in the ratio of 55:44 with flow rate of 1 mL/min and detection wavelength of 425 nm. Further, the amount of curcumin, demethoxycurcumin and bis-demethoxycurcumin in crude C. longa sample was found to be 13.86±0.28, 10.98±0.23 and 9.32±0.20 mg/g resp. From the results obtained it can be concluded that the application of the QbD approach ensured the development of a more precise method that can engender consistent, reliable, and quality data throughout the process and also save time. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Application In Synthesis of Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Application In Synthesis of Bisdemethoxycurcumin

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem