Tag: 200-300

Iron-Catalyzed Atom Transfer Radical Polymerization of Semifluorinated Methacrylates was written by Dadashi-Silab, Sajjad;Matyjaszewski, Krzysztof. And the article was included in ACS Macro Letters in 2019.Related Products of 3063-94-3 The following contents are mentioned in the article:

Fluorinated polymers are an important class of functional materials that exhibit unique properties such as high chem. resistance, thermal stability, and low surface energy. Atom transfer radical polymerization (ATRP) of semifluorinated monomers catalyzed by copper catalysts often requires development of special conditions to control the polymerization and prevent side reactions such as base-catalyzed transesterification between the fluoro-containing monomers and solvents. In this paper, photoinduced iron-catalyzed ATRP was applied to the polymerization of a variety of semifluorinated methacrylate monomers. Polymerizations were initiated by photochem. generation of the Fe catalyst activator under blue light irradiation, enabling temporal control over the growth of polymer chains, and were well-controlled in various solvents, including fluorinated and nonfluorinated solvents, without undergoing any side reactions. Moreover, in situ chain extension and block copolymerization experiments demonstrated the preservation of chain end functionality, enabling facile synthesis of well-controlled block copolymers. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Related Products of 3063-94-3).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) 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.Related Products of 3063-94-3

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

Copolymers of Isopropenyl Alkyl Ethers with Fluorinated Acrylates and Fluoroacrylates: Influence of Fluorine on Their Thermal, Photochemical, and Hydrolytic Stability was written by Signori, Francesca;Lazzari, Massimo;Castelvetro, Valter;Chiantore, Oscar. And the article was included in Macromolecules in 2006.Electric Literature of C7H6F6O2 The following contents are mentioned in the article:

The homopolymer of Bu isopropenyl ether (pBPE) and a series of homo- and copolymers of BPE and decyl isopropenyl ether (DPE) with acrylates and methacrylates fluorinated on the vinyl and/or the alkoxy group were synthesized by cationic (pBPE) or free-radical process. The three structurally analogous 1,1,1,3,3,3-hexafluoroisopropyl methacrylate (HFIMA), 1,1,1,3,3,3-hexafluoroisopropyl 2-fluoroacrylate (HFIFA), and iso-Pr 2-fluoroacrylate (IFA) as well as Et 3,3-difluoro-2-methylpropenoate (EFMA) were used as the fluorinated comonomers. The thermal properties and aging behavior of the copolymers were correlated to their structure and particularly to the protective action of the fluorinated moieties against photooxidative and acid-catalyzed hydrolytic degradation triggered by the labile side chains of the BPE units. Depending on their distance from the primary center of photooxidation, the fluorinated groups can either slow down or largely modify the degradation pathway, as shown by the dominant crosslinking in the strictly alternating HFIFA/BPE which outweighs the prevailing chain fragmentation of the other copolymers. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Electric Literature of C7H6F6O2).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) 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. 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.Electric Literature of C7H6F6O2

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

Kinetic polymerization behavior of fluorinated monomers for dental use was written by Kadoma, Yoshinori. And the article was included in Dental Materials Journal in 2010.Product Details of 3063-94-3 The following contents are mentioned in the article:

The kinetic polymerization behavior of 2,2,2-trifluoroethyl methacrylate (TFEMA), 1,1,1,3,3,3-hexafluoroisopropyl methacrylate (HFIPMA), 2,2,2-trifluoroethyl acrylate (TFEA), and 1,1,1,3,3,3-hexafluoroisopropyl acrylate (HFIPA) was determined by isothermal differential scanning calorimetry (DSC) and high-performance liquid chromatog. (HPLC) in order to improve the properties of fluorinated powder-liquid adhesive resins. Conversion and heat of polymerization were calculated, and the solubility of the homopolymers in common solvents was examined Comparison of their polymerization reactivity with that of MMA revealed that the overall rate of polymerization initiated by benzoyl peroxide (BPO) decreased in the order TFEA > MMA > TFEMA > HFIPA > HFIPMA. Based on the retention time of the monomer determined by HPLC, the hydrophobicity of the monomers was found to increase in the order MMA < TFEA < TFEMA < HFIPA < HFIPMA. The overall research results suggested that TFEA and HFIPA would be potentially promising candidates for the monomer liquid component of fluorinated powder-liquid adhesive resins. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Product Details of 3063-94-3).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) 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. Polyesters are important plastics, with monomers linked by ester moieties. 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.Product Details of 3063-94-3

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

Synthesis of novel polycarbonate-based thermoplastic polyurethane elastomers compatibilizers with octadecyl side chains and their application in PC/PP blends was written by Zhang, Yu;He, Jingwei;Liu, Fang. And the article was included in Polymers for Advanced Technologies in 2021.Related Products of 102-09-0 The following contents are mentioned in the article:

With the aim to improve the compatibility of polycarbonate (PC)/polypropylene (PP) blends, a novel aromatic polycarbonate diol (PCDL) was synthesized by the transesterification reaction, then a series of polycarbonate-based thermoplastic polyurethane elastomers compatibilizers (TPU-Gx) with octadecyl side chains were successfully prepared by introducing different content of PCDL and glyceryl monostearate (2,3-Dihydroxypropyl octadecenoate; GMS). The structures of synthesized products were confirmed by Fourier transform IR spectroscopy and NMR hydrogen spectroscopy. Thermogravimetry results showed that all TPU-Gx had good thermal stability. The effects of TPU-Gx on the compatibilization of PC/PP blends were investigated in the aspect of morphol., mech., thermal, and rheol. properties. The results showed that all TPU-Gx could enhance the interfacial adhesion between PC/PP and improve the mech. properties of PC/PP blends. Among them, the addition of TPU-G1.5 containing 6.0 wt% PCDL and 1.5 wt% GMS made PC/PP/TPU-G1.5 blends show the highest impact strength, which increased by 54.1% when compared with that of pure PC/PP blends. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Related Products of 102-09-0).

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

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

Analysis on HS-SPME/GC-MS technology in volatile components of Wuchang rice was written by Huang, Ya-wei;Xu, Jin;Wang, Ruo-lan;Dou, Kang-ning. And the article was included in Shipin Gongye (Shanghai, China) in 2016.Formula: C15H22O2 The following contents are mentioned in the article:

To study the flavor of japonica rice, sticky rice and aromatic rice in the 6 harvest rice of Wuchang zone, the anal. of the volatile components was used by solid-phase microextraction (SPME) and gas chromatog. coupled with mass spectrometry (GC-MS), comparing the difference between the different varieties. The results were drown out as follow: in the anal. of 6 cultivars, the aromatic rice Daohuaxiang 2 was observed to have the highest number of volatile compounds Tongnian 1 had the highest volatile compounds of the sticky rice. Chaochan 16 had the highest volatile compounds of the japonica rice. Except alkanes, cyclohexanol, 3,5-dimethyl-, undecanal, acrylic acid-2-Et ester, tetracosanol compounds and nonanal were only found in aromatic rice in cultivars. While Wuchang japonica rice contained the majority of straight-chain alkanes, only a few of the aldehyde acid esters of volatile compounds were detected. 2-Heptan-4-ol, n-caproic acid vinyl ester, trans-3-nonen-2-one and oxacycloheptadec-8-en-2-one (8z) were not found in other rice except for sticky rice, and these could be considered Wuchang sticky rice flavor compounds This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Formula: C15H22O2).

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. 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.Formula: C15H22O2

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

Dienic sex pheromones. Stereoselective syntheses of (7E,9Z)-7,9-dodecadien-1-yl acetate, (E)-9,11-dodecadien-1-yl acetate, and (9Z,11E)-9,11-tetradecadien-1-yl acetate by palladium-catalyzed reactions was written by Rossi, Renzo;Carpita, Adriano;Quirici, M. Grazia. And the article was included in Tetrahedron in 1981.Reference of 50767-78-7 The following contents are mentioned in the article:

(7E,9Z)-Et(CH:CH)₂(CH₂)_nOAc [(7E,9Z)-I (n = 6)], the sex pheromone of Lobesia botrana, was prepared (21.6%) from EtCCBr and MeCH:CH(CH₂)₆OR (R = tetrahydropyranyl) by sequential cross-coupling reaction [Pd(PPh₃)₄, MeONa], acetylation (AcOH, reflux, 6 h), and stereoselective reduction [(Me₂CHCHMe)₂BH, THF]. Similarly, (9Z,11E)-I (n = 8), a sex pheromone component of Spodoptera littoralis, was prepared (30.2%) from (E)-EtCH:CHI and BrMgCC(CH₂)₈OR (R as before). (E)-CH₂:CHCH:CH(CH₂)₈OAc, a sex pheromone component of Diparopsis castanea, was prepared (54.3%) from H₂C:CHBr and (Me₂CHCHMe)₂BCH:CH(CH₂)₈OR (R as before) by Pd(PPh₃)₄-catalyzed cross-coupling reaction followed by acetylation (Ac₂O, AcOH, 80°). This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Reference of 50767-78-7).

(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.Reference of 50767-78-7

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

Allylic oxidation of olefins by catalytic and stoichiometric selenium dioxide with tert-butyl hydroperoxide was written by Umbreit, M. A.;Sharpless, K. B.. And the article was included in Journal of the American Chemical Society in 1977.Synthetic Route of C12H18O3 The following contents are mentioned in the article:

Reactive olefins were oxidized to the allylic alcs. and carbonyl compounds by catalytic SeO2 in the presence of excess Me3COOH (I). Olefins normally unreactive toward SeO2 were readily oxidized at room temperature to the unrearranged allylic products in good yields by stoichiometric SeO2 and I. I suppresses generation of Se(0) and Se(II) species, which ordinarily complicate the reaction of SeO2 with olefins. This study involved multiple reactions and reactants, such as (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5Synthetic Route of C12H18O3).

(2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Synthetic Route of C12H18O3

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

Catalytic enantioselective addition of diethylzinc to trifluoromethyl ketones. [Erratum to document cited in CA149:307341] was written by Yearick, Kimberly;Wolf, Christian. And the article was included in Organic Letters in 2008.Formula: C11H9F3O3 The following contents are mentioned in the article:

On page 3915, we overlooked previous work by Sasaki et. al. which discusses the enantioselective synthesis of tertiary alcs. via addition of diethylzinc to trifluoromethyl ketones in the presence of nitrogen-containing polydentate ligands. The following reference citation should be included: “Higashiyama, K.; Sasaki, S.; Kubo, H.; Yamauchi, T.; Ishii, A.; Kanai, M. Japanese Patent 200609692, Apr. 13, 2006.”. This study involved multiple reactions and reactants, such as Ethyl 4-(2,2,2-Trifluoroacetyl)benzoate (cas: 898787-14-9Formula: C11H9F3O3).

Ethyl 4-(2,2,2-Trifluoroacetyl)benzoate (cas: 898787-14-9) 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. Polyesters are important plastics, with monomers linked by ester moieties. 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.Formula: C11H9F3O3

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

Stereocontrolled synthesis and configurational assignment of (R)-all-trans-11,12-dihydro-3-hydroxyretinol was written by Rivas, Aurea;Alvarez, Rosana;de Lera, Angel R.. And the article was included in Tetrahedron Letters in 2019.Quality Control of (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate The following contents are mentioned in the article:

The synthesis of (R)-all-trans-11,12-dihydro-3-hydroxyretinol I and putative metabolites of the side-chain functional group has been achieved in a stereocontrolled manner via the Suzuki-Hiyama cross-coupling reaction of an enantiopure (hydroxycyclohexenyl)alkenyl iodide and non-conjugated pinacolboranedienoate, which allowed the absolute configuration of this natural product to be confirmed. This study involved multiple reactions and reactants, such as (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5Quality Control of (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate).

(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. 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.Quality Control of (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate

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

Oxidation of olefins with 2-pyridineseleninic anhydride was written by Barton, Derek H. R.;Crich, David. And the article was included in Tetrahedron in 1985.Recommanded Product: 37905-02-5 The following contents are mentioned in the article:

2-Pyridineseleninic anhydride (I) prepared in situ by oxidation of the corresponding diselenide with iodoxybenzene, is an efficient reagent for the conversion of olefins to unsaturated ketones with retention of the original position of the double bond. Thus, oxidation of β-pinene gave 95% (+)-pinocarvone. This reagent is much more reactive towards olefins than benzeneseleninic anhydride. This study involved multiple reactions and reactants, such as (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5Recommanded Product: 37905-02-5).

(2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5) 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. Polyesters are important plastics, with monomers linked by ester moieties. 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.Recommanded Product: 37905-02-5

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