Tag: 200-300

The optical and morphological properties of fluorinated polymer dispersed liquid crystals was written by Schulte, M. D.;Clarson, S. J.;Natarajan, L. V.;Tondiglia, V. P.;Bunning, T. J.. And the article was included in Materials Research Society Symposium Proceedings in 1999.Recommanded Product: 3063-94-3 The following contents are mentioned in the article:

Polymer dispersed liquid crystal (PDLC) films with a partially fluorinated polymer matrix were studied. The optical and morphol. properties of fluorinated PDLC’s were different from nonfluorinated films. The incremental addition of a fluorine-substituted monofunctional methacrylate monomer to a pentaacrylate-based standard PDLC formulation resulted in significant improvement in contrast ratio. Results suggest that fluorine decreased compatibility between the polymer and liquid crystal phases. SEM was employed to elucidate morphol. differences between fluorinated host matrixes and nonfluorinated control films. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Recommanded Product: 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. 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: 3063-94-3

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

Alternative synthetic route to the cembrene skeleton was written by Takayanagi, Hisao;Uyehara, Tadao;Kato, Tadahiro. And the article was included in Journal of the Chemical Society, Chemical Communications in 1978.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 secocembrene I (R = CO₂Me), prepared in 44% yield by coupling reaction of MeCR:CH(CH₂)₂CMe:CHCH₂R¹ (II; R = CO₂Me, R¹ = Cl) with II (R = Me, R¹ = SO₂Ph), on sequential dehydrochlorination, reduction, bromination, and ring closure with LiN(CHMe₂)₂, gave cembrene derivative III (R = SO₂Ph). Reductive cleavage of III (R = SO₂Ph) gave 69% (±)-neocembrene, III (R = H). 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. 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. Quality Control of (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate

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

A practical, convenient, and highly stereospecific synthesis of 1-acetoxy-(E)-9,11-dodecadiene. The insect sex pheromone of bollworm moth was written by Ranganathan, S.;Kumar, Raaj;Maniktala, V.. And the article was included in Synthetic Communications in 1982.Electric Literature of C14H24O2 The following contents are mentioned in the article:

(E)-CH₂:CHCH:CH(CH₂)₇CH₂OAc was prepared from (E)-HCOCH:CH(CH₂)₇CO₂Me, obtained from castor oil in 4 steps, by reaction with Ph₃P⁺MeBr^–, reduction of (E)-CH₂:CHCH:CH(CH₂)₇CO₂Me to the alc., and esterification. (E,E)-Me(CH:CH)₂(CH₂)₆CH₂OH, the sex pheromone of the codling moth, was similarly prepared from (E)-HCOCH:CH(CH₂)₆CO₂Me. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Electric Literature of C14H24O2).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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. 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.Electric Literature of C14H24O2

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

Stereoselective synthesis of solanesol and all-trans-decaprenol was written by Sato, Kikumasa;Inoue, Seiichi;Onishi, Akira;Uchida, Nobuhiko;Minowa, Nobuto. And the article was included in Journal of the Chemical Society in 1981.Quality Control of (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate The following contents are mentioned in the article:

Stereochem. pure 1,5-dienes were prepared in moderate to good yields by coupling of allylic p-tolyl sulfones with an allylic bromide. E.g., coupling reaction of all-trans-bromogeranyl acetate (I) with the sulfone II and with higher isoprene analogs, followed by reductive elimination of p-MeC₆H₄SO₂, gave all-trans-polyprenols and decaprenol (III; n = 10) stereoselectively. Solanesol (III; n = 9) was similarly prepared through coupling of ClCH₂CMe:CHCH₂OAc. 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. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Quality Control of (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate

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

Photo-on-Demand Base-Catalyzed Phosgenation Reactions with Chloroform: Synthesis of Arylcarbonate and Halocarbonate Esters was written by Hashimoto, Yuka;Hosokawa, Sasuga;Liang, Fengying;Suzuki, Yuto;Dai, Namin;Tana, Gegen;Eda, Kazuo;Kakiuchi, Toshifumi;Okazoe, Takashi;Harada, Hidefumi;Tsuda, Akihiko. And the article was included in Journal of Organic Chemistry in 2021.HPLC of Formula: 102-09-0 The following contents are mentioned in the article:

Carbonate esters are utilized as solvents and reagents for C1 building blocks in organic synthesis. This study reports a novel photo-on-demand in situ synthesis of carbonate esters with CHCl₃ solutions containing a mixture of an aromatic or haloalkyl alc. having relatively high acidity, and an organic base. We found that the acid-base interaction of the alc. and base in the CHCl₃ solution plays a key role in enabling the photochem. reaction. This reaction allows practical syntheses of di-Ph carbonate derivatives, haloalkyl carbonates, and polycarbonates, which are important chems. and materials in industry. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0HPLC of Formula: 102-09-0).

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

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

Novel synthesis of 1,3-dienes from 1-alkenes via “ene” reaction with Pummerer rearrangement product: a short synthesis of the sex pheromone of the red bollworm moth was written by Ishibashi, Hiroyuki;Komatsu, Hajime;Maruyama, Kazumi;Ikeda, Masazumi. And the article was included in Tetrahedron Letters in 1985.Formula: C14H24O2 The following contents are mentioned in the article:

The Pummerer rearrangement product, 4-ClC₆H₄SCH₂O₂CCF₃, obtained from 4-ClC₆H₄SOMe and (CF₃CO)₂O, reacted with 1-alkenes in CF₃CO₂H to give 4-ClC₆H₄SCH₂CH₂CH:CHR [R = (CH₂)₄Me, (CH₂)₆Me, (CH₂)₇CO₂Me], which were readily converted into CH₂:CHCH:CHR by oxidation and pyrolysis. Using this method, 9,11-dodecadien-1-yl acetate, a sex pheromone of the red bollworm moth, was synthesized. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Formula: C14H24O2).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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. 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: C14H24O2

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

Improving the thermal properties of polycarbonate via the copolymerization of a small amount of bisphenol fluorene with bisphenol A was written by Zhang, Xiaozhou;Liu, Yang;Li, Xin;Liu, Xin;Jian, Xigao;Wang, Jinyan. And the article was included in International Journal of Polymer Science in 2022.HPLC of Formula: 102-09-0 The following contents are mentioned in the article:

Polycarbonate is an attractive transparent plastic with high mech./thermal properties. A family of copolycarbonates of bisphenol-A (BPA), 9, 9-bis (4-hydroxyphenyl) fluorene (BHPF), and di-Ph carbonate (DPC) were prepared by a transesterification polymerization The weight-average mol. weight of the polycarbonates ranges from 65,000 to 107,000 g/mol; the copolycarbonates showed T_g and Td-5% from 63-70°C and 100-105°C higher than the control, resp. Meanwhile, the processing properties of polycarbonate remain unchanged. These properties endow the polymers with potential for use as high-temperature resistance materials. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0HPLC of Formula: 102-09-0).

Diphenyl carbonate (cas: 102-09-0) 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. 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.HPLC of Formula: 102-09-0

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

Application of [3 + 2] nitrile oxide cycloaddition chemistry to the construction of retinoid skeleton and to a new formal synthesis of (±)-ascofuranone and geiparvarin was written by Baraldi, Pier Giovanni;Bigoni, Angelica;Guarneri, Mario;Manfredini, Stefano;Pollini, Gian Piero;Simoni, Daniele. And the article was included in Farmaco in 1993.Category: esters-buliding-blocks The following contents are mentioned in the article:

A flexible approach to the construction of the C-20 retinoid carbon skeleton involving the intermol. [3 + 2] cycloaddition of the nitriles oxide I derived from a C-14 aldehyde component with (E)-HCCCMe:CHCH₂OAc or (E,E)-CH₂:CHCMe:CHCH₂OAc, followed by Mo(CO)₆-promoted ring opening of the derived 3,5-disubstituted isoxazoline or isoxazole ring systems, has been accomplished. The same strategy has been also successfully applied as a tool for the crucial carbon-carbon bond forming step to the formal synthesis of (±)-ascofuranone and to a new synthesis of geiparvarin. This study involved multiple reactions and reactants, such as (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5Category: esters-buliding-blocks).

(2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5) 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. 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.Category: esters-buliding-blocks

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

Cinchona Alkaloid-Derived Zwitterions Catalyzed Enantioselective Steglich Rearrangement and Aldol Reaction of O-Acylated Oxindoles was written by Lam, Ying-Pong;Huang, Jingxian;Jiang, Xiaojian;Yeung, Ying-Yeung. And the article was included in ChemCatChem in 2022.Application of 102-09-0 The following contents are mentioned in the article:

A class of cinchona alkaloid-derived zwitterions was successfully applied to achieve highly enantioselective Steglich rearrangement. A series of O-acylated oxindoles afforded C-acylated oxindoles possessing a quaternary stereocenter. These products were obtained in high yields and with excellent enantioselectivity. The same catalytic protocol was also found to be applicable in the asym. aldol reaction of oxindoles. Studies were conducted to elucidate a clearer mechanism. These findings would advance the development of new reaction protocols that exploit cinchona alkaloid-derived zwitterions as asym. nucleophilic catalysts. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application of 102-09-0).

Diphenyl carbonate (cas: 102-09-0) 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. 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.Application of 102-09-0

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

Catalytic [2+2]-Cycloaddition Reactions of Silyl Enol Ethers. A Convenient and Stereoselective Method for Cyclobutane Ring Formation was written by Takasu, Kiyosei;Ueno, Megumi;Inanaga, Kazato;Ihara, Masataka. And the article was included in Journal of Organic Chemistry in 2004.HPLC of Formula: 3063-94-3 The following contents are mentioned in the article:

An efficient catalytic [2+2]-cycloaddition reaction leading to the formation of cyclobutane rings has been devised. The process transforms silyl enol ethers and α,β-unsaturated esters into polysubstituted cyclobutanes with a high degree of trans-stereoselectivity. Both the rate and stereoselectivity of the process can be controlled by the choice of the ester group and silyl substituents. The results of stereochem. studies show that the cycloaddition step in this reaction proceeds in a nonstereospecific manner and, thus, by a pathway involving sequential nucleophilic additions via a short-lived zwitterionic intermediate. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3HPLC of Formula: 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. 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. HPLC of Formula: 3063-94-3

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