Tag: 200-300

Conjugate addition of dialkylaluminum chlorides to alkylidenemalonic acid derivatives was written by Maas, Steffen;Stamm, Armin;Kunz, Horst. And the article was included in Synthesis in 1999.Related Products of 10203-58-4 This article mentions the following:

Complete regioselectivity is achieved in conjugate addition of dialkylaluminum chlorides with alkylidenemalonic esters, alkylidenecyanoacetates, and alkylidenemalononitrile to give 灏?branched carboxylate derivatives Sterically demanding products containing quaternary C atoms are obtained in good yields. In the case of Et₂AlCl, accompanying reduction of the substrates can be suppressed by application of BF₃ as an assisting Lewis acid. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Related Products of 10203-58-4).

Diethyl isobutylmalonate (cas: 10203-58-4) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is 绾?valerolactone.Related Products of 10203-58-4

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

Asymmetric cyclizations via a sequential Michael addition/Conia-ene reaction by combining multifunctional quaternary phosphonium salt and silver catalysis was written by Fang, Guosheng;Zheng, Changwu;Cao, Dongdong;Pan, Lu;Hong, Haoran;Wang, Hongyu;Zhao, Gang. And the article was included in Tetrahedron in 2019.HPLC of Formula: 1190-39-2 This article mentions the following:

A one-pot asym. Michael addition/Conia-ene reaction sequence, catalyzed by combination of a dipeptide-derived multifunctional quaternary phosphonium salt and Ag₂CO₃ was developed, which provided a series of synthetically important chiral methylenecyclopentane derivatives in moderate to excellent yields (up to 97%) and enantioselectivities (up to 93%). In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2HPLC of Formula: 1190-39-2).

malonic acid dibutyl ester (cas: 1190-39-2) 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.HPLC of Formula: 1190-39-2

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

Syntheses of 5-fluorouracil-fat conjugates and evaluation of their in vitro cytotoxic activity was written by Lee, Heejoo;Chang, Pan Sup;Kim, Jae Wan;Jung, Ki Hwa;Shin, Soon Hee;Shin, Hae Soon;Jung, Soon Bog. And the article was included in Yakhak Hoechi in 1990.Category: esters-buliding-blocks This article mentions the following:

Fluorouracil amides I [R = (CH₂)₁₀Me, (CH₂)₁₆Me, (CH₂)₇(CH:CHCH₂)₂Bu, (CH₂)₇(CH:CHCH₂)₃Me, (CH₂)₁₀CO₂Me] were prepared as prodrugs by heating 5-fluorouracil in the RNCO. Preliminary testing for their antitumor effect was carried out on leukemia L1210 cells in culture. Most I, like fluorouracil, exhibited <50% inhibition growth at 1 鑴?10^-7M. Only I [R = (CH₂)₁₀CO₂Me] showed >50% inhibition at the same level. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Category: esters-buliding-blocks).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) 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. 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.Category: esters-buliding-blocks

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

Synthesis, characterization and biological activities of new bis-1,3,4-oxadiazoles was written by Malghe, Yuvraj S.;Thorat, Varsha V.;Chowdhary, Abhay S.;Bobade, Anil S.. And the article was included in Journal of Chemical and Pharmaceutical Research in 2015.Formula: C12H22O4 This article mentions the following:

A series of 1,n-bis[5-(3-methoxy-4-hydroxy-5-nitrophenyl)-1,3,4-oxadiazol-2-yl]alkanes/benzene was synthesized. Condensation of different dihydrazides with 5-nitrovanillin gave corresponding dihydrazones. Dihydrazones on oxidative cyclization using chloramine-T yielded the corresponding bis-1,3,4-oxadiazole derivatives Structures of newly synthesized compounds were established using FTIR, ¹H NMR and elemental anal. All compounds were screened for their anti-inflammatory activities. IC₅₀ values revealed that newly synthesized compounds exhibited better anti-inflammatory activities. Representative samples were studied for cytotoxicity. Results of cytotoxicity revealed that compounds exhibited moderate cytotoxicity. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Formula: C12H22O4).

Dimethyl decanedioate (cas: 106-79-6) 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. 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.Formula: C12H22O4

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

Sulfonic Acid-Functionalized, Hyper-Cross-Linked Porous Polyphenols as Recyclable Solid Acid Catalysts for Esterification and Transesterification Reactions was written by Kalla, Reddi Mohan Naidu;Kim, Mi-Ra;Kim, Il. And the article was included in Industrial & Engineering Chemistry Research in 2018.Safety of Dimethyl decanedioate This article mentions the following:

Easy, safe, and cost-effective hydroxyl-containing microporous hyper-crosslinked polymers based on phenol (pPhOH) or 4,4′-(propane-2,2-diyl)diphenol (or bisphenol A; BPA) were prepared by the Friedel-Crafts alkylation reaction of phenol and bisphenol A using dimethoxymethane as an external crosslinker. The pPhOH and pBPA were functionalized by chlorosulfonic acid to yield corresponding sulfonic acid-functionalized polymers, pPh-SO₃H and pBPA-SO₃H, resp., with their surface areas of 210 m²/g and 324 m²/g, resp. The physicochem. properties of pPh-SO₃H and pBPA-SO₃H were analyzed by Fourier transform IR spectroscopy, X-ray diffraction, thermogravimetric anal., SEM, Brunauer-Emmett-Teller anal., and XPS. The pPh-SO₃H and pBPA-SO₃H polymers show excellent catalytic activity for the esterification of free fatty acids and transesterification of vegetable oils at room temperature, as well as excellent recyclability, signifying the potential of these porous polymers in a wide array of eco-friendly acid-promoted chem. transformations. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Safety of Dimethyl decanedioate).

Dimethyl decanedioate (cas: 106-79-6) 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.Safety of Dimethyl decanedioate

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

Induced Self-Assembly and Disassembly of Alkynylplatinum(II) 2,6-Bis(benzimidazol-2閳?yl)pyridine Complexes with Charge Reversal Properties: “Proof-of-Principle” Demonstration of Ratiometric Forster Resonance Energy Transfer Sensing of pH was written by Chan, Calford Wai-Ting;Chan, Kevin;Yam, Vivian Wing-Wah. And the article was included in ACS Applied Materials & Interfaces.Related Products of 313648-56-5 This article mentions the following:

pH-responsive alkynylplatinum(II) 2,6-bis(benzimidazol-2閳?yl)pyridine (bzimpy) complexes with charge-reversal properties were synthesized, and the supramol. assemblies between conjugated polyelectrolyte, PFP-OSO₃^–, and [Pt{bzimpy(TEG)₂}{C椤氬挵-C₆H₃-(COOH)₂-3,5}]Cl (1) were studied using UV-visible absorption, emission, and resonance light scattering (RLS) spectroscopy. An efficient Forster resonance energy transfer (FRET) from PFP-OSO₃^– donor to the aggregated 1 as acceptor with the aid of Pt(II)璺矾璺疨t(II) interactions was presented, which leads to a growth of triplet metal-metal-to-ligand charge transfer (³MMLCT) emission in the low-energy red region. The two-component PFP-OSO₃^––1 ensemble was then exploited as a proof-of-principle concept strategy for pH sensing by tracking the ratiometric emission changes. With the aid of judicious mol. design on the pH-driven charge-reversal property, the polyelectrolyte-induced self-assembly and the FRET from PFP-OSO₃^– to the Pt(II) aggregates were modulated. Together with its excellent reversibility and photostability, the extra stability provided by the Pt(II)璺矾璺疨t(II) and 锜?锜?stacking interactions on top of the electrostatic and hydrophobic interactions existing in polyelectrolye-complex assemblies led to a selective and sensitive pH sensing assay. In the experiment, the researchers used many compounds, for example, Dimethyl 5-ethynylisophthalate (cas: 313648-56-5Related Products of 313648-56-5).

Dimethyl 5-ethynylisophthalate (cas: 313648-56-5) 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.Related Products of 313648-56-5

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

An L-glutaminase enzyme reactor based on porous bamboo sticks and its application in enzyme inhibitors screening was written by Qiao, Juan;Zhao, Liping;Liu, Lili;Qi, Li. And the article was included in Talanta in 2019.HPLC of Formula: 27249-90-7 This article mentions the following:

Inspired by the porous and fibrous structure of com. available bamboo, herein we created an L-glutaminase enzyme reactor based on bamboo sticks. The enzyme was immobilized onto the bamboo sticks through a glutaraldehyde modification to achieve covalent bonding. The enzymic hydrolysis efficiency of the prepared L-glutaminase@bamboo sticks based porous enzyme reactor was evaluated by chiral ligand exchange capillary electrochromatog. using L-glutamine as the substrate. L-Glutaminase@bamboo exhibited improved enzymic hydrolysis performances, including high hydrolysis efficiency (maximum rate V_max: two fold higher than the free enzyme), prolonged stability (14 days) and good reusability. L-Glutaminase@bamboo sticks also expanded application capability in pharmaceutical industry in enzyme inhibitor screening. These excellent properties could be attributed to the micropores of bamboo sticks, which led to the fast enzymic kinetics. The results suggest that the pores of bamboo sticks played an important role in the proposed enzyme reactor during the hydrolysis of L-glutamine and L-glutaminase inhibitor screening. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7HPLC of Formula: 27249-90-7).

Benzyl benzodithioate (cas: 27249-90-7) 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. 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: 27249-90-7

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

Selective monomethyl esterification of linear dicarboxylic acids with bifunctional alumina catalysts was written by Santacroce, Veronica;Bigi, Franca;Casnati, Alessandra;Maggi, Raimondo;Storaro, Loretta;Moretti, Elisa;Vaccaro, Luigi;Maestri, Giovanni. And the article was included in Green Chemistry in 2016.Electric Literature of C13H24O4 This article mentions the following:

An environmentally friendly protocol for the selective protection of dicarboxylic acids OHC(O)(CH₂)_nC(O)OH (n = 2, 4, 6, 7, 10) was reported using methanol as a cheap esterifying agent and alumina as a heterogeneous catalyst; the selectivity of the process has been ascribed to a balanced acidity/basicity of the bifunctional alumina catalyst. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Electric Literature of C13H24O4).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) 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. 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.Electric Literature of C13H24O4

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

Optically transparent bio-based polyamides with microcellular foaming properties derived from renewable difunctional aminoamides was written by Ranganathan, Palraj;Chen, Yu-Hao;Rwei, Syang-Peng;Lee, Yi-Huan. And the article was included in Journal of Applied Polymer Science in 2022.Application of 106-79-6 This article mentions the following:

A green approach for the synthesis of bio-based polyamides (PAs) with a new macromol. structure was developed. These bio-based PAs were synthesized by solvent and catalyst-free polycondensation combining fatty dimer acid Pripol 1009 with new difunctional aminoamides (DAAs). The later DAAs building blocks were synthesized by aminolysis of renewable di-Me sebacate (DMS) and di-Me adipate (DMA) with 3 different aliphatic diamines having diverse chain lengths, 2, 4, and 6 carbons. Bio-based PAs showed M_w up to 30,581 g/mol, initial thermal degradation over 380鎺? T_m from 168.3-202.4鎺矯, T_g from 28.3-37.5鎺矯, strain from 36.4 鍗?.0-313.5 鍗?.0%, and tensile strength up to 27.4 鍗?.1 MPa. All the PAs films had excellent optical transparency with cut-off wavelengths of 276.0-283.0 nm, transmittance from 82.7%-90.7% at 600 nm. As a proof-of-concept of their usage, 1 of the PA can form microcellular foam by the green scCO₂ method. The foams possessed uniform (cell size; 40娓璵, foam d.; 0.265 g/cm³, expansion rate; 7.2) and bimodal (cell size; 24/38娓璵, foam d.; 0.302 g/cm³, expansion rate; 6.5) cell textures depending on their foaming temperatures This is the first report of bio-based PA foams and transparent films manufacturing without toxic solvents. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Application of 106-79-6).

Dimethyl decanedioate (cas: 106-79-6) 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. 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.Application of 106-79-6

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

Aggregation behaviour of poly(fluoro(meth)acrylate)-block-poly(acrylic acid) copolymers at the air /water interface was written by Grigoreva, Alexandra;Tarankova, Kseniia;Zamyshlyayeva, Olga;Zaitsev, Sergey. And the article was included in Journal of Polymer Research in 2021.Safety of Benzyl benzodithioate This article mentions the following:

The formation of monolayers of poly(fluoro(meth)acrylate)-b-poly(acrylic acid) (PFA-b-PAA) amphiphilic diblock copolymers at the air/water interface was characterized with the Langmuir film balance technique and at. force microscopy. Both internal and external effects on the aggregation behavior of the amphiphilic copolymers were considered. The structure of fluorinated hydrophobic part, as an internal factor, affects the surface behavior of the amphiphilic copolymers through changes in the packing d. of the hydrophobic core. The morphol. of the LB films of all the three copolymers exhibit circular micelles with the hydrophobic core and hydrophilic coronas. The variation in pH and ionic strength leads to changes in charge distribution of PAA coronas. The surface area occupied by the PFA-b-PAA copolymers decrease with the rise of pH of subphase. The increase in salt concentration provides for the reduction of electrostatic repulsion between the hydrophilic blocks. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Safety of Benzyl benzodithioate).

Benzyl benzodithioate (cas: 27249-90-7) 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 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.Safety of Benzyl benzodithioate

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