Tag: 100-200

Tracking steel corrosion in halide solutions with a pH stimuli responsive polymer was written by Hanna, Joshua S.;Rawlins, James W.. And the article was included in Proceedings of the International Waterborne, High-Solids, and Powder Coatings Symposium in 2012.Quality Control of Ethyl 3-ethoxypropanoate The following contents are mentioned in the article:

In situ and non-invasive corrosion monitoring was accomplished using a simple spectroscopic technique in combination with a recently synthesized fluorescent pH stimuli responsive polymer. The characterization protocol quantified the relative standard deviation of the average fluorescence intensity over the entire steel substrate to quantify the onset of corrosion using up to 1536 data points. Statistically relevant data for coated substrates exposed to a series of different environments were able to provide a corrosivity ranking at a high level of confidence. In this paper, the methods and capability of the combined approach were confirmed to correlate corrosion severity vs. different halide salts, matching trends already established in literature with time to initiate corrosion. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Quality Control of Ethyl 3-ethoxypropanoate).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. 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.Quality Control of Ethyl 3-ethoxypropanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Characterization of odour-active compounds of sour guava (Psidium acidum[DC.]Landrum) fruit by gas chromatography-olfactometry and odour activity value was written by Pino, Jorge A.;Trujillo, Reinaldo. And the article was included in Flavour and Fragrance Journal in 2021.COA of Formula: C8H16O2 The following contents are mentioned in the article:

Volatile compounds in sour guava (Psidium acidum [DC.] Landrum) were isolated by headspace-solid-phase microextraction (HS-SPME) and solvent-assisted flavor evaporation (SAFE). Analyses were performed by GC-FID and GC-MS. By GC-O, the HS-SPME extract was evaluated by frequency anal., whereas the SAFE extract was assessed by aroma extract dilution anal. (AEDA) and odor activity value (OAV) to find the most odor-active components. Twenty-four volatiles were found as odor-active compounds and contribute to the typical sour guava aroma, from which hexyl acetate, 3-methylbutyl butanoate, (Z)-3-hexenyl acetate, (Z)-3-hexenyl hexanoate, nonanal and (E)-β-ionone presented the highest aroma contribution in sour guava fruit. Results demonstrated a good resemblance between the typical aroma of the fruit and the aroma model. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0COA of Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 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. COA of Formula: C8H16O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Effects of the ether oxygen atom in alkyl side chains on the physical properties of piperidinium ionic liquids was written by Nokami, T.;Yamashita, T.;Komura, T.;Handa, N.;Shimizu, M.;Yamaguchi, K.;Domi, Y.;Usui, H.;Sakaguchi, H.;Itoh, T.. And the article was included in Faraday Discussions in 2018.Related Products of 763-69-9 The following contents are mentioned in the article:

Various types of piperidinium ionic liquids (ILs) equipped with an oxygen atom-containing alkyl side chain on the pos. charged nitrogen atom were systematically synthesized and their phys. properties investigated. The thermal stability, viscosity, electrochem. window, and ion conductivity were influenced significantly by changing the position of the oxygen atom in the alkyl chain. Although the lowest viscosity was recorded for 1-((2-methoxyethoxy)methyl)-1-methylpiperidin-1-ium bis(trifluoromethylsulfonyl)amide ([PP_1MEM][Tf₂N]), 1-methyl-1-(2-propoxyethyl)piperidin-1-ium bis(trifluoromethylsulfonyl)amide ([PP_1PE][Tf₂N]) can be recommended as the best IL as an electrolyte due to its low viscosity and high thermal and electrochem. stability among the seven ILs tested. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Related Products of 763-69-9).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. 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. 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.Related Products of 763-69-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Synthesis of N-trifluoromethyl amides from carboxylic acids was written by Liu, Jianbo;Parker, Matthew F. L.;Wang, Sinan;Flavell, Robert R.;Toste, F. Dean;Wilson, David M.. And the article was included in Chem in 2021.Application In Synthesis of Isopropylisothiocyanate The following contents are mentioned in the article:

Here, the synthesis of N-trifluoromethyl amides R¹C(O)NCF₃(R²) [R¹ = Et, cyclohexyl, CH₂CH₂Ph, etc.; R² = Me, allyl, CH₂CH₂Ph, etc.] from carboxylic acid halides and esters under mild conditions via isothiocyanates in the presence of silver fluoride at room temperature was reported. Through this strategy, isothiocyanates were desulfurized with AgF, and then the formed derivative was acylated to afford N-trifluoromethyl amides, including previously inaccessible structures. This method showed broad scope, provides a platform for rapidly generating N-trifluoromethyl amides by virtue of the diversity and availability of both reaction partners and should find application in the modification of advanced intermediates. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Application In Synthesis of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. 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. Application In Synthesis of Isopropylisothiocyanate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Synthesis of N-trifluoromethyl amides from carboxylic acids was written by Liu, Jianbo;Parker, Matthew F. L.;Wang, Sinan;Flavell, Robert R.;Toste, F. Dean;Wilson, David M.. And the article was included in Chem in 2021.Computed Properties of C4H7NS The following contents are mentioned in the article:

Here, the synthesis of N-trifluoromethyl amides R¹C(O)NCF₃(R²) [R¹ = Et, cyclohexyl, CH₂CH₂Ph, etc.; R² = Me, allyl, CH₂CH₂Ph, etc.] from carboxylic acid halides and esters under mild conditions via isothiocyanates in the presence of silver fluoride at room temperature was reported. Through this strategy, isothiocyanates were desulfurized with AgF, and then the formed derivative was acylated to afford N-trifluoromethyl amides, including previously inaccessible structures. This method showed broad scope, provides a platform for rapidly generating N-trifluoromethyl amides by virtue of the diversity and availability of both reaction partners and should find application in the modification of advanced intermediates. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Computed Properties of C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. 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. 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.Computed Properties of C4H7NS

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Grafted Polyethylene Glycol-Graphene Oxide as a Novel Triphase Catalyst for Carbenes and Nucleophilic Substitution Reactions was written by Yang, Xiaohai;Zhai, Jie;Xu, Tongchun;Xue, Bing;Zhu, Jie;Li, Yongxin. And the article was included in Catalysis Letters in 2019.Formula: C10H20O2 The following contents are mentioned in the article:

Separation and reusability had been main problems for the using of polyethylene glycol (PEG) as phase transfer catalysts (PTCs). To solve these problems, PEG was firstly and successfully grafted on graphene oxide (GO) using BF₃·C₂H₅OC₂H₅ as Lewis acid catalyst. The solid GO-PEG composites were systemically investigated by characterization techniques (TG, FT-IR, XPS, ICP-AES etc.) and then applied to some carbenes and nucleophilic substitution reactions as novel triphase catalysts. As the results, GO-PEG showed not only equally excellent catalytic activity (≥ 93% yield of 7,7-dichlorobicyclo[4.1.0]heptane and iodooctane) but also incomparable reusability (≥ 85% yield of iodooctane after using for four times) in comparison with traditional PTCs (PEG). This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Formula: C10H20O2).

Octyl acetate (cas: 112-14-1) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 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. Formula: C10H20O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Solvent affinity and its applications in the prediction of mutual solubility was written by Zhao, Yueqiang;Liu, Weiwei;Zhu, Jing;Zhang, Hongming;Pei, Xiaoqin. And the article was included in Journal of Molecular Liquids in 2021.HPLC of Formula: 112-14-1 The following contents are mentioned in the article:

The solvent affinity may be defined as the degree of similarity between solute and solvent mols. in terms of the solute-solvent interactions at infinite dilution, which comprises contributions from resemblance in mol. structure (size and energy) S_e and resemblance in Hansen solubility parameter (HSP) S_h. The phys. meaning of S_h may be the ratio of mixing deriving force to mixing resisting force. A theor. concept and estimation method of hydrophile-lipophile balance (HLB) for surfactants (emulsifiers) defined in terms of solvent affinity was proposed in this work. Its applications in the prediction of liquid organic – water mutual solubility, solubility of solid solutes in pure solvents and HLB values of surfactants have been examined extensively with successful results. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1HPLC of Formula: 112-14-1).

Octyl acetate (cas: 112-14-1) belongs to esters. 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. 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: 112-14-1

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Preparation and catalytic esterification activity of novel organic-silicotungstate was written by Luan, Qing-jie;Li, Si-jia;Liu, Li-jun;Gong, Shu-wen. And the article was included in Huaxue Shiji in 2018.Recommanded Product: Methyl heptanoate The following contents are mentioned in the article:

A novel organic-silicotungstate catalyst (QA-HSiW) was prepared by the modifying of H₄SiW₁₂O₄₀ with quinaldic acid. The QA-HSiW was characterized by powder X-ray diffraction (XRD), IR spectroscopy (FT-IR), thermogravimetric anal. (TG) and potentiometric titration Then the catalyst was employed for esterification of oleic acid to evaluate its acid-catalytic activity. The results indicated that QA-HSiW was not only maintained the typical Keggin structure of HSiW, but also presented strong acid strength and good thermal stability. QA-HSiW exhibited excellent catalytic activity in esterification and the conversion of oleic acid could reach up to 99.8% under optimal conditions. QA-HSiW had good reusability and there was no obvious change for the phase and the Keggin structure of catalyst after the reaction. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Recommanded Product: Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) belongs to esters. 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.Recommanded Product: Methyl heptanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Synthesis of 2-[(5-Amino-1H-pyrrol-2-yl)sulfanyl]acetic Acid Esters: One-Pot Assembly from Propargyl Amines, Isothiocyanates, and Alkyl 2-Bromoacetates was written by Tarasova, Olga A.;Nedolya, Nina A.;Albanov, Alexander I.;Trofimov, Boris A.. And the article was included in Synthesis in 2019.HPLC of Formula: 2253-73-8 The following contents are mentioned in the article:

The compounds 2-[(5-Amino-1 H-pyrrol-2-yl)sulfanyl]acetic acid esters I (R = R¹ = Me, Et, Pr; RR¹ = -(CH₂)₄-, -(CH₂)₅-, -(CH₂)₂O(CH₂)₂-; R² = Me, Et, i-Pr, n-Bu, CH₂CH₂OCH=CH₂; R³ = Me, Et, i-Pr, t-Bu, Bn) have been synthesized in up to 77% yield by the one-pot reaction of lithiated propargylamines RR¹NCH₂CCH with isothiocyanates R²N=C=S followed by sequential treatment with t-BuOK-DMSO and alkyl 2-bromoacetates BrCH₂CO₂R³. The process occurs through the initial formation of the thiophene core, followed by its recyclization into the pyrrole nucleus at a higher temperature (ca. 45-60 °C). This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8HPLC of Formula: 2253-73-8).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. 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.HPLC of Formula: 2253-73-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Synthesis of 2-[(5-Amino-1H-pyrrol-2-yl)sulfanyl]acetic Acid Esters: One-Pot Assembly from Propargyl Amines, Isothiocyanates, and Alkyl 2-Bromoacetates was written by Tarasova, Olga A.;Nedolya, Nina A.;Albanov, Alexander I.;Trofimov, Boris A.. And the article was included in Synthesis in 2019.Safety of Isopropylisothiocyanate The following contents are mentioned in the article:

The compounds 2-[(5-Amino-1 H-pyrrol-2-yl)sulfanyl]acetic acid esters I (R = R¹ = Me, Et, Pr; RR¹ = -(CH₂)₄-, -(CH₂)₅-, -(CH₂)₂O(CH₂)₂-; R² = Me, Et, i-Pr, n-Bu, CH₂CH₂OCH=CH₂; R³ = Me, Et, i-Pr, t-Bu, Bn) have been synthesized in up to 77% yield by the one-pot reaction of lithiated propargylamines RR¹NCH₂CCH with isothiocyanates R²N=C=S followed by sequential treatment with t-BuOK-DMSO and alkyl 2-bromoacetates BrCH₂CO₂R³. The process occurs through the initial formation of the thiophene core, followed by its recyclization into the pyrrole nucleus at a higher temperature (ca. 45-60 °C). This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Safety of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. 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.Safety of Isopropylisothiocyanate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics