Tag: 200-300

‘Ene’-type reaction of the Pummerer rearrangement product derived from 4-chlorophenyl methyl sulfoxide. Synthesis of some insect sex pheromones was written by Ishibashi, Hiroyuki;Komatsu, Hajime;Ikeda, Masazumi. And the article was included in Journal of Chemical Research, Synopses in 1987.Application In Synthesis of (E)-Dodeca-9,11-dien-1-yl acetate The following contents are mentioned in the article:

4-ClC₆H₄SCH₂O₂CCF₃, obtained by treating 4-ClC₆H₄SOMe with (CF₃CO)₂O, underwent ene reactions with RCH₂CH:CH₂ [R = Et, Bu, pentyl, heptyl, (CH₂)₇CO₂Me] to give 4-ClC₆H₄SCH₂CH₂CH:CHR (I) in E–Z ratios of 85:15. Oxidation and thermolysis of I gave CH₂:CHCH:CHR. I [R = (CH₂)₇CO₂Me] was converted to CH₂:CHCH:CH(CH₂)₈OAc, the pheromone of the red bollworm moth, and to bombykol. I (R = Et) was converted to Et(CH:CH)₂(CH₂)₈OAc, an isomer of the tobacco cutworm pheromone. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Application In Synthesis of (E)-Dodeca-9,11-dien-1-yl acetate).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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. 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.Application In Synthesis of (E)-Dodeca-9,11-dien-1-yl acetate

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

Analysis of chemical compositions of volatile oil in wild eggplant leaves and its application in cigarette was written by Lin, Kai. And the article was included in Jiangxi Nongye Xuebao in 2013.Recommanded Product: 5444-75-7 The following contents are mentioned in the article:

The volatile oil in wild eggplant leaf was extracted by simultaneous distillation and solvent extraction, and its chem. constituents were analyzed by comprehensive two-dimensional gas chromatog. and time-of-flight mass spectrometry (GC×GC-TOF-MS). Total 322 kinds of volatile oil constituents were identified, including 40 kinds of alc., 41 kinds of aldehyde, 5 kinds of acid, 2 kinds of lactone, 87 kinds of alkane, 21 kinds of olefin, 67 kinds of ketone and 10 kinds of ester. Sensory evaluation results showed that the volatile oil of wild eggplant leaf, which was either directly added into the cigarette or indirectly added into the tobacco sheet in the mode of coating liquid, could harmonize with tobacco fragrance, enhance aroma quantity, reduce stimulation, increase the smoking satisfaction and comfort, and obviously improve the status of smoking gas. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Recommanded Product: 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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. Recommanded Product: 5444-75-7

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

A New Class of Oxyimides: Oxyimide Ethers and Their Use as Flame Retardants was written by Spiess, Bianca;Metzsch-Zilligen, Elke;Pfaendner, Rudolf. And the article was included in Macromolecular Materials and Engineering in 2021.Name: Diphenyl carbonate The following contents are mentioned in the article:

Oxyimides have gained wide interest in different applications because of radical generating properties, such as flame retardants in various polymers. As polyamide-6 (PA6) is highly flammable and shows burning dripping during incineration the mentioned issues have to be overcome by the use of a flame retardant. All previously developed oxyimides already show these properties, but this is based on the ester structure with the consequence of transesterification/transamidation in polyesters/polyamides. In this work, a new class of oxyimides based on ether bonds is synthesized. Oxyimide ethers do not degrade PA6, only sometimes slightly increase MVR, and show excellent flame retardancy in PA6. Depending on the structure, UL 94 V-0 can be reached with very low loadings. This makes oxyimide ethers an alternative to commonly used flame retardants for PA6. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Name: Diphenyl carbonate).

Diphenyl carbonate (cas: 102-09-0) 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. 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.Name: Diphenyl carbonate

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

Chemical Composition of the Essential Oil from Cirsium setidens, a Korean Medicinal Plant was written by Choi, Hyang-Sook. And the article was included in Analytical Chemistry Letters in 2015.Related Products of 5444-75-7 The following contents are mentioned in the article:

The objective of the present study was to investigate the chem. composition of the essential oil from Cirsium setidens. C. setidens (koryoungungqwui in Korea) is a perennial plant belonging to the Compositae family, and it is an endemic species of Korea. The essential oil obtained by hydrodistillation Clevenger method from the aerial part of C. setidens was analyzed by GC and GC-MS. Ninety-two volatile flavor components, constituting 94.0 % of the total volatile composition of the essential oil, were identified in the essential oil of C. setidens. The oil was composed mainly of alcs., ketones, esters, terpenes, carboxylic acid and hydrocarbons. Phytol (38.67 %) was the most abundant compound, followed by 6,10,14-trimethyl-2-pentadecanone (16.74 %), hexadecanoic acid (8.37 %), 1,2,15,16-diepoxyhexadecane (2.30 %), and β-caryophyllene alc. (2.28 %). This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Related Products of 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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. Related Products of 5444-75-7

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

Multivariate analysis of the correlation between noctuidae subfamilies and the chemical structure of their sex pheromones or male attractants was written by Renou, Michel;Lalanne-Cassou, Bernard;Michelot, Didier;Gordon, Ginette;Dore, Jean Christophe. And the article was included in Journal of Chemical Ecology in 1988.HPLC of Formula: 50767-78-7 The following contents are mentioned in the article:

Female-emitted pheromones and sex attractants of Noctuidae were investigated by using a specific computer procedure to analyze data collected from the literature. Correspondence anal. was used to survey the structure-activity relationships of sex pheromones in 7 subfamilies. Structural, stereochem., and functional features of active mols. were related to taxonomy. This multidimensional anal. revealed that the prevalent chem. frame of noctuid moth pheromones was a monosatd. acetate with Z stereochem. and a double bond on the 5th carbon closest to the nonfunctional branch of the mol. Possible phylogenetic relationships within Noctuidae and between Noctuidae and other families are discussed in light of the sex pheromone biochem. Female sex pheromones appeared to be an addnl. character to be considered in the classification of noctuid moths. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7HPLC of Formula: 50767-78-7).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.HPLC of Formula: 50767-78-7

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

Peculiarities of the composition of volatile components in picroilmenites from Yakutian kimberlites of various ages (by gas chromatography-mass spectrometry) was written by Tomilenko, A. A.;Bul’bak, T. A.;Pokhilenko, L. N.;Kuzmin, D. V.;Sobolev, N. V.. And the article was included in Doklady Earth Sciences in 2016.Electric Literature of C15H22O2 The following contents are mentioned in the article:

The composition of volatile components in picroilmenites from Yakutian kimberlitic pipes of various ages (the Olivinovaya, Malokuonapskaya, and Udachnaya-East pipes) was studied for the first time by means of gas chromatog.-mass spectrometry (GC-MS). It was shown that picroilmenites and olivines from same kimberlitic pipes contained volatile components of close composition, whereas these components were quite different in these minerals from different pipes. These features point to a common source and represent the specificity of the magma chamber formed under the pronounced influence of hydrocarbons with their derivates, as well as nitrogen-, chlorine-, and sulfur-containing compounds The fraction of hydrocarbons and derivates in the composition of volatile matter is as high as 99%, including 9.7% of chlorine- and fluorinecontaining compounds This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Electric Literature of C15H22O2).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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 C15H22O2

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

Synthesis of 12-acetoxy-1,3-dodecadiene, an insect sex pheromone of the red bollworm moth, from a butadiene telomer was written by Mandai, T.;Yasuda, H.;Kaito, M.;Tsuji, J.;Yamaoka, R.;Fukami, H.. And the article was included in Tetrahedron in 1979.Quality Control of (E)-Dodeca-9,11-dien-1-yl acetate The following contents are mentioned in the article:

Selective hydroboration of R(CH₂)₃CH:CHCH₂OPh (I; R = CH₂:CH), prepared in 78% yield by Pd-catalyzed telomerization of butadiene with PhOH, followed by H₂O₂ oxidation, gave 80% I (R = HOCH₂CH₂). Tosylation (84%) of the latter followed by treatment with NaI in refluxing Me₂CO gave 95% I (R = ICH₂CH₂). Grignard reaction of the latter with RO(CH₂)₄MgCl (R = tetrahydropyranyl) gave 80% RO(CH₂)₉CH:CHCH₂OPh (II; R as before), which after hydrolysis and acetylation gave II (R = AcO). The title pheromone was obtained (71%) by Pd-catalyzed elimination of PhOH from II (R = AcO). This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Quality Control of (E)-Dodeca-9,11-dien-1-yl acetate).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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. 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. Quality Control of (E)-Dodeca-9,11-dien-1-yl acetate

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

Pharmacophore identification of ascofuranone, potent inhibitor of cyanide-insensitive alternative oxidase of Trypanosoma brucei was written by Saimoto, Hiroyuki;Kido, Yasutoshi;Haga, Yasushi;Sakamoto, Kimitoshi;Kita, Kiyoshi. And the article was included in Journal of Biochemistry in 2013.Formula: C12H18O3 The following contents are mentioned in the article:

Trypanosoma brucei is a parasite that causes human African trypanosomiasis (HAT). The parasites depend on the cyanide-insensitive trypanosome alternative oxidase (TAO) for their vital aerobic respiration. Ascofuranone (AF), a potent and specific sub-nanomolar inhibitor of the TAO quinol oxidase, is a potential novel drug with selectivity for HAT, because mammalian hosts lack the enzyme. To elucidate not only the inhibition mechanism but also the inhibitor-enzyme interaction, AF derivatives were designed and synthesized, and the structure-activity relationship was evaluated. Here the pharmacophore of AF that interacts with TAO was identified. The detailed inhibitory profiles indicated that the 1-formyl and 6-hydroxyl groups, which might contribute to intramol. hydrogen bonding and/or serve as hydrogen-bonding donors, were responsible for direct interaction with the enzyme. This study involved multiple reactions and reactants, such as (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5Formula: C12H18O3).

(2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5) 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.Formula: C12H18O3

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

SPME-GC-MS for the off-gassing analysis of a complex museum object was written by Alvarez-Martin, Alba;Kavich, Gwenaelle. And the article was included in Microchemical Journal in 2021.HPLC of Formula: 5444-75-7 The following contents are mentioned in the article:

The identification of volatile organic compounds (VOCs) emitted by a complex museum object, composed of materials of different nature, has been optimized by solid-phase microextraction coupled to gas chromatog.-mass spectrometry (SPME-GC-MS). The performance of two fiber coatings and four sampling times were tested and compared in order to define the best sampling conditions. The method allowed a fair extraction of volatile and semivolatile compounds emitted naturally by the object, without any type of accelerating aging. In addition, on-fiber derivatization was applied to improve the extraction efficiency and reduce the sampling time of harmful carboxylic acids emitted by the object. The results obtained are of prime importance to show the off-gassing activity of a valuable museum object in order to take further decisions related with its storage and display conditions. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7HPLC of Formula: 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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: 5444-75-7

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

Manganese-mediated reductive amidation of esters with nitroarenes was written by Cheung, Chi Wai;Shen, Ni;Wang, Shao-Peng;Ullah, Asim;Hu, Xile;Ma, Jun-An. And the article was included in Organic Chemistry Frontiers in 2019.Computed Properties of C13H18O3 The following contents are mentioned in the article:

A convenient and efficient method to synthesize N-aryl amides RNHC(O)R¹ (R = 4-methylphenyl, 2H-1,3-benzodioxol-5-yl, quinolin-6-yl, etc; R¹ = n-C₆H₁₃, cyclohexyl, 4-chlorophenyl, pyridin-3-yl, etc.) via amidation of esters R¹C(O)OR² (R² = Et, benzyl, 2H-1,3-benzodioxol-5-ylmethyl, etc.) with nitroarenes RNO₂ was reported. In the presence of manganese metal, this amidation proceeded smoothly without the need for addnl. catalysts or ligands. Various esters and nitroarenes are suitable substrates to afford a wide range of N-aryl amides, including bio-active mols. RNHC(O)R¹ (R = 2-phenyl-1,3-benzoxazol-5-yl, R¹ = Ph; R = 2-phenyl-1,3-benzoxazol-5-yl, R¹ = benzyl) and intermediates I (X = H, Cl) to drug mols. e.g., II. This study involved multiple reactions and reactants, such as Methyl 2-(4-(tert-butyl)phenoxy)acetate (cas: 88530-52-3Computed Properties of C13H18O3).

Methyl 2-(4-(tert-butyl)phenoxy)acetate (cas: 88530-52-3) 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. 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 C13H18O3

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