Month: November 2022

Facile determination of foamability index of non-ionic and cationic frothers and its effect on flotation of quartz was written by Kowalczuk, Przemyslaw B.;Siedlarz, Marta;Szczerkowska, Sabina;Wojcik, Marta. And the article was included in Separation Science and Technology in 2018.Recommanded Product: 112-59-4 The following contents are mentioned in the article:

In this work, a facile method for determination of foaming properties of frothers was used. It was based on measuring the foam height in a flotation machine at different concentrations of frothers. Based on the foam height-concentration curve, a new foaming parameter, so-called concentration at half of the maximum foam height CMH, was proposed. Assessment and usefulness of CMH were shown in flotation of quartz. The concentration of amine at the critical contact angle CCA, at which amine starts to be a collector, was also determined The determined values of CCA were similar to CMH and were equal to 1.3, 0.14 and 0.03 mM for ButNH₂, HexNH₂ and OctNH₂, resp. The values of CMH and CCA depended on the alkyl chain of frothers. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Recommanded Product: 112-59-4).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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.Recommanded Product: 112-59-4

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

Simplex lattice design for optimization of the mass ratio of Curcuma longa L., Curcuma zedoaria (Christm.) Roscoe and Curcuma aromatica Salisb. to maximize curcuminoids content and antioxidant activity was written by Monton, Chaowalit;Chuanchom, Panupong;Popanit, Puwadon;Settharaksa, Sukanya;Pathompak, Pathamaporn. And the article was included in Acta Pharmaceutica (Warsaw, Poland) in 2021.Quality Control of Bisdemethoxycurcumin The following contents are mentioned in the article:

The aim of this work was to optimize the mass ratio of three Curcuma plants’ rhizomes to obtain the highest curcuminoid content and antioxidant activity using the simplex lattice design. The selected Curcuma plants were C. longa, C. zedoaria and C. aromatica. The simplex lattice design was applied in the work. The individual curcuminoids (curcumin, demethoxycurcumin and bis-demethoxycurcumin) and total curcuminoid content were determined using high-performance liquid chromatog. Curcuma longa alone provided the highest content of bis-demethoxycurcumin and demethoxycurcumin. A mixture of C. longa and C. aromatica in the mass ratio of 72:28% provided the highest curcumin content. The results showed that C. longa alone exhibited the highest antioxidant activity. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Quality Control of Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Quality Control of Bisdemethoxycurcumin

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

Self-Diffusion of End-Capped Oligo(ethylene glycol)s in Poly(vinyl alcohol) Aqueous Solutions and Gels was written by Masaro, L.;Zhu, X. X.. And the article was included in Macromolecules in 1999.Quality Control of 2-(2-(Hexyloxy)ethoxy)ethanol The following contents are mentioned in the article:

We have studied the self-diffusion of a series of end-capped ethylene glycol and oligo(ethylene glycol)s in poly(vinyl alc.) aqueous solutions and gels by pulsed-gradient spin echo NMR spectroscopy. The end groups of the diffusants include small flexible groups (Me, Et, hexyl) and bulky rigid groups (tert-Bu and aromatic groups). The effect of the size and geometry of the end groups on the self-diffusion coefficients of the derivatives of ethylene glycol and of oligo(ethylene glycol)s is investigated. The diffusion data are analyzed with several phys. models of diffusion based on different phys. concepts to test their applicabilities. The variation of the parameters used in these diffusion models with the size and geometry of the diffusants is also discussed. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Quality Control of 2-(2-(Hexyloxy)ethoxy)ethanol).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) 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. 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.Quality Control of 2-(2-(Hexyloxy)ethoxy)ethanol

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

Synthesis and characterization of novel 4-benzyloxyphenyl 4-[4-(n-dodecyloxy) benzoyloxy]benzoate liquid crystal was written by Balkanli, Emine;Cakar, Fatih;Ocak, Hale;Cankurtaran, Ozlem;Eran, Belkiz Bilgin. And the article was included in Turkish Journal of Chemistry in 2021.Computed Properties of C13H12O2 The following contents are mentioned in the article:

Liquid crystal (LC) compound 4-benzyloxyphenyl 4-[4-(n-dodecyloxy)benzoyloxy]benzoate (BDBB) was prepared and characterized. Inverse gas chromatog. (IGC) was to be a beneficial anal. method for the research of thermodn. characteristics of the new LC. Acetate and alc. isomers were used to examine LC selectivity via the IGC technique at temperatures between 333.2 K and 483.2 K. The retention diagrams of n-heptane, n-octane, n-nonane, n-decane, undecane, dodecane, tridecane, Bu acetate, iso-Bu acetate, Et acetate, n-propylbenzene, isopropylbenzene, ethylbenzene, chlorobenzene and toluene on BDBB were plotted with temperatures of 483.2-493.2 K. Flory-Huggins interaction parameter and weight fraction activity coefficient at infinite dilution were researched for BDBB. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Computed Properties of C13H12O2).

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. 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.Computed Properties of C13H12O2

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

Synthesis and characterization of novel 4-benzyloxyphenyl 4-[4-(n-dodecyloxy) benzoyloxy]benzoate liquid crystal was written by Balkanli, Emine;Cakar, Fatih;Ocak, Hale;Cankurtaran, Ozlem;Eran, Belkiz Bilgin. And the article was included in Turkish Journal of Chemistry in 2021.Category: ethers-buliding-blocks The following contents are mentioned in the article:

Liquid crystal (LC) compound 4-benzyloxyphenyl 4-[4-(n-dodecyloxy)benzoyloxy]benzoate (BDBB) was prepared and characterized. Inverse gas chromatog. (IGC) was to be a beneficial anal. method for the research of thermodn. characteristics of the new LC. Acetate and alc. isomers were used to examine LC selectivity via the IGC technique at temperatures between 333.2 K and 483.2 K. The retention diagrams of n-heptane, n-octane, n-nonane, n-decane, undecane, dodecane, tridecane, Bu acetate, iso-Bu acetate, Et acetate, n-propylbenzene, isopropylbenzene, ethylbenzene, chlorobenzene and toluene on BDBB were plotted with temperatures of 483.2-493.2 K. Flory-Huggins interaction parameter and weight fraction activity coefficient at infinite dilution were researched for BDBB. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Category: ethers-buliding-blocks).

4-Benzyloxyphenol (cas: 103-16-2) 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. 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.Category: ethers-buliding-blocks

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

Dehydrocoupling of boranes with amines using a scandium catalyst was written by Wang, Yang;Xu, Pengfei;Xu, Xin. And the article was included in Chinese Chemical Letters in 2021.SDS of cas: 109-85-3 The following contents are mentioned in the article:

The scandocene alkyl complex (C₅Me₅)₂ScCH₂SiMe₃ was found to be an efficient catalyst for the dehydrocoupling of the non-cyclic boranes, dicyclohexylborane and thexylborane, with amines under mild conditions. The reactions afforded the corresponding aminoboranes in high yields with good functional group tolerance. The stoichiometric reaction of scandium alkyl with amine led to the isolation of a scandium amide complex, which was shown to be an active species during the catalysis. Although a borane-coordinated scandium hydride was also obtained from the stoichiometric experiment, it was not involved in the catalytic cycle. In addition, kinetic studies provided insight into this intermol. dehydrogenation reaction. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3SDS of cas: 109-85-3).

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.SDS of cas: 109-85-3

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

Small-angle neutron scattering studies of aqueous solutions of short-chain amphiphiles was written by D’Arrigo, G.;Giordano, R.;Teixeira, J.. And the article was included in European Physical Journal E: Soft Matter in 2003.Product Details of 112-59-4 The following contents are mentioned in the article:

The authors present small angle neutron scattering measurements on binary aqueous solutions of some short-chain amphiphiles (diols, triols, glycols and diglycols) at room temperature The spectra were analyzed in terms of the Teubner-Strey phenomenol. formula which allows to obtain a measure for the amphiphilicity strength of each system (amphiphilicity factor f_a). In some systems, however, other models, valid for micellar solutions, give also a good representation of the spectra. As a result, independently of the type of hydrophilic group side (oxydrilic or oxirane), these systems cover the entire accessible amphiphilicity scale (-1 < f_a < 1). Some disordered systems (f_a > 1) presumably are able to form micelle-like aggregates. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Product Details of 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. 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 112-59-4

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

Discovery of 3-aryl substituted benzoxaboroles as broad-spectrum inhibitors of serine- and metallo-β-lactamases was written by Yan, Yu-Hang;Li, Zhao-Feng;Ning, Xiang-Li;Deng, Ji;Yu, Jun-Lin;Luo, Yubin;Wang, Zhenling;Li, Guo;Li, Guo-Bo;Xiao, You-Cai. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2021.Application In Synthesis of 5-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde The following contents are mentioned in the article:

The production of β-lactamases represents the main cause of resistance to clin. important β-lactam antibiotics. Boron containing compounds have been demonstrated as promising broad-spectrum β-lactamase inhibitors to combat β-lactam resistance. Here we report a series of 3-aryl substituted benzoxaborole derivatives, which manifested broad-spectrum inhibition to representative serine-β-lactamases (SBLs) and metallo-β-lactamases (MBLs). The most potent inhibitor 9f displayed an IC50 value of 86 nM to KPC-2 SBL and micromolar inhibitory activity towards other tested enzymes. Cell-based assays further revealed that 9f was able to significantly reduce the MICs of meropenem in clin. isolated KPC-2-producing bacterial strains and it showed no apparent toxicity in HEK293T cells. This study involved multiple reactions and reactants, such as 5-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (cas: 1132669-90-9Application In Synthesis of 5-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde).

5-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (cas: 1132669-90-9) 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.Application In Synthesis of 5-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde

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

A synthesis-driven structure revision of plagiochin E, a highly bioactive bisbibenzyl was written by Speicher, Andreas;Groh, Matthias;Zapp, Josef;Schaumloeffel, Anu;Knauer, Michael;Bringmann, Gerhard. And the article was included in Synlett in 2009.Category: ethers-buliding-blocks The following contents are mentioned in the article:

Recently, a bis-bibenzyl named plagiochin E showing remarkable antifungal and antitumor activities was isolated from Marchantia polymorpha, a liverwort. The total synthesis of the proposed structure for plagiochin E and of 2 structurally and biosynthetically related bis-bibenzyls and comparison of the NMR of the synthetic compounds with those of the isolated bis-bibenzyls necessitates a structure revision for plagiochin E. The isolated bis-bibenzyl called plagiochin E proved to be riccardin D. Exemplarily for this metabolite, the stereostructure was investigated, by racemate resolution on a chiral Lux Cellulose-1 phase with HPLC-CD coupling and quantum chem. CD calculations, clearly assigning the P-configuration for the faster and the M-configuration to the slower enantiomer. This study involved multiple reactions and reactants, such as 5-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (cas: 1132669-90-9Category: ethers-buliding-blocks).

5-Methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (cas: 1132669-90-9) 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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.Category: ethers-buliding-blocks

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

Hybrid Synthetic and Computational Study of an Optimized, Solvent-Free Approach to Curcuminoids was written by Stepanova, Valeria A.;Guerrero, Andres;Schull, Cullen;Christensen, Joshua;Trudeau, Claire;Cook, Joshua;Wolmutt, Kyle;Blochwitz, Jordan;Ismail, Abdelrahman;West, Joseph K.;Wheaton, Amelia M.;Guzei, Ilia A.;Yao, Bin;Kubatova, Alena. And the article was included in ACS Omega in 2022.Recommanded Product: Bisdemethoxycurcumin The following contents are mentioned in the article:

A green and optimized protocol has been developed for the preparation of sym. 1,7-bis(aryl)-1,6-heptadiene-3,5-diones and asym. 2-aryl-6-arylidenecyclohexanones with modified substrate scope and good functional group tolerance. Syntheses proceed smoothly under solvent-free conditions, providing moderate to excellent product yields with a minimal workup procedure. Control experiments, spectroscopic, and computational studies support a mechanism involving the boron-assisted in situ generation of imine intermediates. Crystal structures of three curcuminoids and isolated mechanistic intermediates are reported. The data provide insight for the further development of solvent-free protocols toward diverse curcumin derivatives in the fields of pharmaceutical and synthetic chemistries. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Recommanded Product: Bisdemethoxycurcumin).

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. 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.Recommanded Product: Bisdemethoxycurcumin

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