Month: December 2022

The development of a high-throughput/combinatorial workflow for the study of porous polymer networks was written by Majumdar, Partha;Bahr, James;Crowley, Elizabeth;Kallam, Alekhya;Gubbins, Nathan;Schiele, Kris;Weisz, Michael;Dirk, Shawn M.;Lenhart, Joseph L.;Chisholm, Bret J.. And the article was included in International Journal of High Throughput Screening in 2012.COA of Formula: C7H14O3 The following contents are mentioned in the article:

A high-throughput workflow was developed for the study of porous polymers generated using the process of chem. induced phase separation The workflow includes automated, parallel preparation of liquid blends containing reactive, polymer network-forming precursors and a poragen, as well as a high-throughput poragen extraction process using supercritical CO₂. A structure-process-property relationship study was conducted using epoxy-amine cross-linked networks. The exptl. design involved variations in polymer network cross-link d., poragen composition, poragen level, and cure temperature A total of 216 unique compositions were prepared Changes in opacity of the blends as they cured were monitored visually. Morphol. was characterized using a scanning electron microscope on a subset of the 216 samples. The results obtained allowed for the identification of compositional variables and process variables that enabled the production of porous networks. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9COA of Formula: C7H14O3).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) 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. 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.COA of Formula: C7H14O3

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

Double network oleogels co-stabilized by hydroxypropyl methylcellulose and monoglyceride crystals: Baking applications was written by Jiang, Qinbo;Yu, Zijuan;Meng, Zong. And the article was included in International Journal of Biological Macromolecules in 2022.Name: Glyceryl monostearate The following contents are mentioned in the article:

Edible double network oleogels were prepared by hydroxypropyl methylcellulose (HPMC) and glyceryl monostearate (GMS) by the cryogel-templated method. Hot GMS soybean oil solutions were absorbed by HPMC cryogels, which were further homogenized and cooled to form oleogels containing both the HPMC network and GMS network. The crystal network constructed by GMS crystal clusters significantly enhanced the mech. and rheol. attributes of oleogels. Both the HPMC network and the GMS network were built up due to hydrogen bonds. According to the normalization anal. of FTIR and the deepening of the shift of the absorption peak, hydrogen bonds could also be formed between HPMC and GMS to connect the two independent networks. Double network oleogels were further used to fabricate cookies and cakes, assessed by the texture profile anal. The combination of the HPMC network and GMS network in preparing oleogels will promote the application of oleogels as the fat replacer. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Name: Glyceryl monostearate).

Glyceryl monostearate (cas: 31566-31-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Name: Glyceryl monostearate

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

One-pot four-component tandem synthesis of novel sulfonamide-1, 2, 3-triazoles catalyzed by reusable copper (II)-adsorbed on mesoporous silica under ultrasound irradiation was written by Talha, Aicha;Mourhly, Asmae;Tachallait, Hamza;Driowya, Mohsine;El Hamidi, Adnane;Arshad, Suhana;Karrouchi, Khalid;Arsalane, Said;Bougrin, Khalid. And the article was included in Tetrahedron in 2021.Synthetic Route of C16H22O11 The following contents are mentioned in the article:

A green and efficient synthesis of new sulfonamide-1,2,3-triazoles in heterogeneous conditions was developed. The procedure involved one-pot four-component tandem sulfonamidation/azidation/1,3-dipolar cycloaddition (1,3-DC) reactions under a cooperative effect of ultrasound irradiation and Cu (II) supported on amorphous mesoporous silica [mSiO₂-Cu (II)] catalysis at room temperature in aqueous medium. In addition, the 1,4-disubstituted 1,2,3-triazoles were synthesized by regioselective and chemoselective methods to afford the pure products in excellent yields and short reaction times under ultrasonic irradiation The supported catalyst was prepared from copper (II) nitrate by simple method using ultrasound activation and characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) method and Barrett-Joyner-Halenda (BJH) method. Also, the catalyst was easily prepared, stable, efficient, selective and reusable under ultrasonic conditions. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Synthetic Route of C16H22O11).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. Synthetic Route of C16H22O11

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

Synthesis of task-specific imidazolium ionic liquid as an efficient catalyst in acetylation of alcohols, phenols, and amines was written by Chaubey, Snehkrishn A.;Mishra, Roli. And the article was included in Chemical Papers in 2020.Quality Control of Octyl acetate The following contents are mentioned in the article:

Herein, we report the synthesis of task-specific amino-functionalized imidazolium ionic liquid, acetate1-(2-tert-butoxycarbonylamino-ethyl)-3-methyl-3H-imidazol-1-ium; (Boc-NH-EMIM.OAc), as an efficient catalyst for the acetylation of alcs., phenols, and amines in the presence of acetic anhydride (acetylating reagent). Remarkably, acetic anhydride in the presence of 10 mol% of catalyst (Boc-NH-EMIM.OAc) under solvent-free conditions showed excellent acetylation activity in shorter duration of time. On the basis of this, a general procedure for acetylation of alcs., phenols, and amines has been developed. The ionic liquid (Boc-NH-EMIM.OAc) can be readily recovered and reused successfully up to four consecutive cycles without any significant loss of its catalytic activity. We have been able to show that this acetylating method has many advantages. It gives high yields, takes shorter time, and develops the possibility of benign environmental-friendly process. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Quality Control of Octyl acetate).

Octyl acetate (cas: 112-14-1) 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.Quality Control of Octyl acetate

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

Chemical substitution in processes for inherently safer design: pros and cons was written by Khan, Easir A.;Syeda, Sultana R.. And the article was included in Pure and Applied Chemistry in 2022.Synthetic Route of C13H10O3 The following contents are mentioned in the article:

The aim of chem. substitution is to replace hazardous chems. with a less hazardous alternative in a certain product or process to make it safer for human health and the environment. While a lot has been done by researchers, industries and regulatory bodies on chem. substitution for safer products, very little has been reported in the field of safer processes. On the other hand, chem. substitution is one of the core principles of inherently safer design, a concept frequently used in the chem. industry for the prevention of major accidents. This work presents an anal. of implementing chem. substitution methodol. for safer processes through inherently safer design. Chem. industries, nowadays, are frequently asked to phase out hazardous chems. from their processes. This paper provides an insight into the issues and practicability of chem. substitution in processes with the help of case studies and a review of the existing frameworks of inherently safer design. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Synthetic Route of C13H10O3).

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. 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 C13H10O3

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

Sex pheromone of the sugarcane shoot borer, Tetramoera schistaceana Snellen (Lepidoptera:Tortricidae:Olethreutinae). Isolation and identification was written by Kinjo, Mieko;Nagamine, Masaaki;Sugie, Hajime;Tamaki, Yoshio. And the article was included in Nippon Oyo Dobutsu Konchu Gakkaishi in 1996.COA of Formula: C14H24O2 The following contents are mentioned in the article:

The structure of the sex pheromone of the most important sugarcane pest, sugarcane shoot borer, T. schistaceana was determined to establish an integrated method of controlling this pest. The sex pheromone was extracted from the abdominal tips of virgin females. Using laboratory bioassay in a small flight tunnel, 2 active components of the sex pheromone were isolated. The major and minor components were identified as (Z)-9-dodecenyl acetate and (E)-9,11-dodecadienyl acetate, resp. The major component alone had no attractivity but a mixture of the 2 components showed strong activity in sugarcane fields. The sex pheromone of T. schistaceana was determined to be a 100:1 mixture of (Z)-9-dodecenyl acetate and (E)-9,11-dodecadienyl acetate. The synergist increasing the attractivity of the sex pheromone was (E)-7,9-decadienyl acetate. The best formulation for the sex attractant was a mixture of the 2 pheromone components and the synergist at a ratio of 1000:10:1. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7COA of Formula: C14H24O2).

(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. 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.COA of Formula: C14H24O2

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

One-Pot Construction of Sulfur-Rich Thermoplastic Elastomers Enabled by Metal-Free Self-Switchable Catalysis and Air-Assisted Coupling was written by Zhu, Xiao-Feng;Yang, Guan-Wen;Xie, Rui;Wu, Guang-Peng. And the article was included in Angewandte Chemie, International Edition in 2022.Related Products of 2253-73-8 The following contents are mentioned in the article:

Construction of well-defined sulfur-rich macromols. in a facile manner is an interesting but challenging topic. Herein, we disclose how to readily construct well-defined triblock sulfur-rich thermoplastic elastomers via a self-switchable isothiocyanate/episulfide copolymerization and air-assisted oxidative coupling strategy. During self-switchable polymerization, alternating copolymerization of isothiocyanate and episulfide occurs initially due to the lower energy barrier for isothiocyanate insertion with respect to successive episulfide ring-opening. After exhaustion of isothiocyanate, ring-opening polymerization of episulfide begins, providing diblock polymers. Subsequent exposure of the reaction to air leads to a transformation of diblock copolymers into triblock thermoplastic elastomers. This protocol can be extended to diverse isothiocyanates and episulfides, allowing fine-tuning of the performance of the produced sulfur-rich thermoplastic elastomers. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Related Products of 2253-73-8).

Isopropylisothiocyanate (cas: 2253-73-8) 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.Related Products of 2253-73-8

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

One-Pot Construction of Sulfur-Rich Thermoplastic Elastomers Enabled by Metal-Free Self-Switchable Catalysis and Air-Assisted Coupling was written by Zhu, Xiao-Feng;Yang, Guan-Wen;Xie, Rui;Wu, Guang-Peng. And the article was included in Angewandte Chemie, International Edition in 2022.Safety of Isopropylisothiocyanate The following contents are mentioned in the article:

Construction of well-defined sulfur-rich macromols. in a facile manner is an interesting but challenging topic. Herein, we disclose how to readily construct well-defined triblock sulfur-rich thermoplastic elastomers via a self-switchable isothiocyanate/episulfide copolymerization and air-assisted oxidative coupling strategy. During self-switchable polymerization, alternating copolymerization of isothiocyanate and episulfide occurs initially due to the lower energy barrier for isothiocyanate insertion with respect to successive episulfide ring-opening. After exhaustion of isothiocyanate, ring-opening polymerization of episulfide begins, providing diblock polymers. Subsequent exposure of the reaction to air leads to a transformation of diblock copolymers into triblock thermoplastic elastomers. This protocol can be extended to diverse isothiocyanates and episulfides, allowing fine-tuning of the performance of the produced sulfur-rich thermoplastic elastomers. 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. 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

Total Synthesis of Pyrolaside B: Phenol Trimerization through Sequenced Oxidative C-C and C-O Coupling was written by Neuhaus, William C.;Kozlowski, Marisa C.. And the article was included in Angewandte Chemie, International Edition in 2020.Recommanded Product: 604-69-3 The following contents are mentioned in the article:

A facile method to oxidatively trimerize phenols using a catalytic aerobic copper system is described. The mechanism of this transformation was probed, yielding insight that enabled cross-coupling trimerizations. With this method, the natural product pyrolaside B (I) was synthesized for the first time. The key strategy used for this novel synthesis is the facile one-step construction of a spiroketal trimer intermediate II, which can be selectively reduced to give the natural product framework without recourse to stepwise Ullmann- and Suzuki-type couplings. As a result, pyrolaside B can be obtained expeditiously in five steps and 16% overall yield. Three other analogs were synthesized, thus highlighting the utility of the method, which provides new accessibility to this area of chem. space. A novel xanthene, III, was also synthesized through controlled Lewis acid promoted rearrangement of a spiroketal trimer. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Recommanded Product: 604-69-3).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. 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: 604-69-3

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

Energy-efficient recovery of fermented butyric acid using octyl acetate extraction was written by Oh, Hyeon Woo;Lee, Seong Chan;Woo, Hee Chul;Kim, Young Han. And the article was included in Biotechnology for Biofuels and Bioproducts in 2022.Name: Octyl acetate The following contents are mentioned in the article:

A butyric acid recovery process using octyl acetate is proposed, and the design details of the extraction and subsequent distillation processes were investigated. Ternary equilibrium data for the extractor design were derived from mol. simulations and exptl. measurements. A new procedure for estimating the thermodn. parameters was introduced to determine the effect of the parameters on extractor design by comparison with previously reported parameters. Using the proposed recovery process with the newly estimated thermodn. model, 99.8% butyric acid was recovered from the fermentation broth at a recovery rate of 99%. The energy demand for the proposed process was found to be lower than the average demand for several reported butyric acid recovery processes. The investment cost is projected to be lower than that of other butyric acid processes due to the high efficiency of extraction solvent. The recovery cost of butyric acid was comparable to its selling price. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Name: Octyl acetate).

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. Polyesters are important plastics, with monomers linked by ester moieties. 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.Name: Octyl acetate

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