Tag: 100-200

New methods to remove volatile organic compounds from post-consumer plastic waste was written by Cabanes, A.;Fullana, A.. And the article was included in Science of the Total Environment in 2021.SDS of cas: 111-77-3 This article mentions the following:

While the annual European demand for polyolefins is 25 million tonnes, only 3 million tonnes of recycled polyolefins find their place in the market, despite collecting 15 million tonnes of post-consumer polyolefins every year. Brand owners of care products are showing their interest in using post-consumer recycled plastics for their packaging. However, there is a general concern in using these materials, as recycled polymers can contain unwanted substances that may expose the consumer to health risks or make the packaging unattractive. Accordingly, the presence of these contaminants narrows the market opportunity of recycled plastics to applications with low-quality requirements and in which the product is not in direct contact with the consumer. Though mech. recycling is the most widespread solution presents limitations in terms of decontamination, as only superficial substances are removed. Thereby, the volatile organic compounds (VOCs) migrated to the polymer matrix remain inside. Consequently, there is a need to find a solution to purify recycled plastics and increase their market share. This study focuses on removing VOCs from post-consumer recycled HDPE through two innovative methods applied for the first time in this field, steam stripping and polyethylene glycol (PEG) extraction The methodol. implemented to analyze the volatile organic compounds in HDPE was HS-SPME-GC/MS. Both methods showed a decrease above 70% in the VOCs content compared to extrusion-degassing. Moreover, these were compared to hot air stripping, a new technol. developed at an industrial scale for the removal of VOCs. As a result, steam stripping improved efficiency in reducing the overall VOCs compared to hot air stripping. The PEG extraction method lowered the volatile polar compounds further than using hot air stripping. Addnl., none of these technologies modified the HDPE melting flow index. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3SDS of cas: 111-77-3).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.SDS of cas: 111-77-3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

New triazolothiadiazole and triazolothiadiazine derivatives as kinesin Eg5 and HIV inhibitors: Synthesis, QSAR and modeling studies was written by Khan, Imtiaz;Hameed, Shahid;Al-Masoudi, Najim A.;Abdul-Reda, Nabeel A.;Simpson, Jim. And the article was included in Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences in 2015.Name: 2-(4-Methoxyphenoxy)acetic acid This article mentions the following:

A new series of fused 1,2,4-triazoles, namely [1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles I (R¹ = 2-F-4-Cl-C₆H₃, furan-3-yl, pyrrol-2-yl, etc.) and II (R² = 2-OH, 2-CH₃, 4-F, etc.) as well as [1,2,4]triazolo[3,4-b][1,3,4]thiadiazines III (R³ = 4-H₃COC₆H₄, 4-FC₆H₄, biphen-4-yl, naphthalen-1-yl, etc.) were synthesized by the condensation of 4-amino-5-(furan-2-yl)-4H-1,2,4-triazole-3-thiol with substituted aromatic acids R¹CO₂H, substituted phenoxyacetic acids R²OCH₂CO₂H, and phenacyl bromides R³C(:O)CH₂Br, resp. The structures of the newly synthesized compounds were established using spectroscopic anal., while that of I (R¹ = 4-FC₆H₄CH₂) was confirmed independently by a single-crystal X-ray structure determination The compounds were evaluated for their antiviral activity against the replication of HIV-1 and HIV-2 in MT-4 cells using an MTT assay. In a docking study, II (R² = 4-OH) interacted with several amino acids in the reverse transcriptase (RT) binding site of HIV-1. Some new analogs were selected for evaluation of their Eg5 inhibitory activity using an in vitro malachite green ATPase assay, the QSAR of these new analogs was studied as well. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Name: 2-(4-Methoxyphenoxy)acetic acid).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Name: 2-(4-Methoxyphenoxy)acetic acid

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Dependence of Linker Length and Composition on Ionic Conductivity and Lithium Deposition in Single-Ion Conducting Network Polymers was written by Aubrey, Michael L.;Axelson, Jordan C.;Engler, Kaitlyn E.;Long, Jeffrey R.. And the article was included in Macromolecules (Washington, DC, United States) in 2021.Application In Synthesis of 2,5,8,11-Tetraoxadodecane This article mentions the following:

Single-ion conducting electrolytes stand as promising alternatives to state-of-the-art electrolytes in lithium batteries, although a single-ion conducting material with high Li⁺ conductivity, stability in contact with lithium, and suitable mech. properties has been slow to emerge. Here, we describe the synthesis of a series of single-ion conducting network polymers from the reaction of tetrakis(4-(chloromethyl)-2,3,5,6-tetrafluorophenyl)borate with oligoethylene glycoxide linkers Li₂O[(CH₂CH₂)O]_n (n = 1, 2, 3, 9, and 22). Polymers with the longest linkers (n = 9 and 22; ANP-9 and ANP-10, resp.) form materials with conductivities of ~10^-6 S cm^-1 at 100°C. With the addition of 65 wt % propylene carbonate (PC), all the network polymers in the series exhibit high conductivities at ambient temperatures, with the n = 1 material (ANP-6) achieving a bulk ionic conductivity of 2.5 × 10^-4 S cm^-1 at 25°C. More conductive single-ion conducting gels could be prepared by using the less coordinating pentanediol dilithium salt as a linker (ANP-11; σ = 3.5 × 10^-4 S cm^-1 at 25°C), although this material exhibited a surprisingly high interfacial resistance in contact with a lithium electrode. In contrast, the gel formed with ANP-6 is notably stable in contact with metallic lithium electrodes, displays a lithium-ion transference number of unity, and boasts a wide electrochem. stability window of greater than 4.5 V. Temperature-dependent ac impedance anal. reveals that the ionic conductivity of this material-and likely the other gels in the series-matches closely to a Vogel-Tamman-Fulcher temperature model. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Application In Synthesis of 2,5,8,11-Tetraoxadodecane).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Application In Synthesis of 2,5,8,11-Tetraoxadodecane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Synthesis and herbicidal activity of N-(4-chloro-2-fluoro-5-substituted phenyl)isoindole-1,3-dione derivatives was written by Zhang, Hao;Li, Qibo;Liu, Kechang;Liu, Ruiquan;Li, Qingyang;Wang, Qingmin;Liu, Shangzhong. And the article was included in Youji Huaxue in 2015.Related Products of 1877-75-4 This article mentions the following:

In order to find new herbicidal leading compounds, a series of N-(4-chloro-2-fluoro-5-substituted phenyl)isoindole-1,3-dione derivatives were designed and synthesized via the strategy of linking active sub-structures which are chlorophthalim and phenoxy carboxylic ester. The target compounds were synthesized from starting material 2-chloro-4-fluoro-5-nitrophenol in four steps, and their structures were confirmed by ¹H NMR, ¹³C NMR and HRMS. The preliminary bioassay results indicated that most compounds exhibited excellent herbicidal activities at 1,500 g/ha in both pre- and post-emergence treatments against Abutilon theophrasti and Amaranthus retroflexus. On the basis of advanced screening tests, compound 6d exhibited 100% inhibitory effect against Abutilon theophrasti and Amaranthus retroflexus at 750 g/ha, compounds 7a and 7i were much more effective against Abutilon theophrasti than com. acifluorfen with 80%-86% inhibitory activity at 22.5 g/ha. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Related Products of 1877-75-4).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Related Products of 1877-75-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Fenitrothion and 3-methyl-4-nitrophenol degradation by two bacteria in natural waters under laboratory conditions was written by Alonso, Jose L.;Sabater, Consuelo;Ibanez, Maria J.;Amoros, Inmaculada;Botella, Maria S.;Carrasco, Jose. And the article was included in Journal of Environmental Science and Health, Part A: Environmental Science and Engineering & Toxic and Hazardous Substance Control in 1997.Related Products of 5367-32-8 This article mentions the following:

The ability of 2 bacterial strains, Flavobacterium strain ATCC 27551, and Arthrobacter aurescens strain TW17, to degrade fenitrothion and the product of its hydrolysis, 3-methyl-4-nitrophenol (MNP), in natural water under laboratory conditions was studied. Fenitrothion was degraded by Flavobacterium whereas MNP was not. In comparison, MNP was metabolized by A. aurescens and fenitrothion was not. Natural microbial populations did not decompose fenitrothion and MNP; however Flavobacterium and A. aurescens degraded these compounds in the presence of the natural microbial population. In the experiment, the researchers used many compounds, for example, 3-Methyl-4-nitroanisole (cas: 5367-32-8Related Products of 5367-32-8).

3-Methyl-4-nitroanisole (cas: 5367-32-8) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Related Products of 5367-32-8

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Rhodium-catalyzed asymmetric synthesis of 1,1-disubstituted 1,3-dihydrobenzo[c]furans from prochiral triynes and internal alkynes was written by Ye, Fei;Haddad, Mansour;Ratovelomanana-Vidal, Virginie;Michelet, Veronique. And the article was included in Catalysis Communications in 2018.Recommanded Product: 16356-02-8 This article mentions the following:

The cationic rhodium/BINAP system was found to be an efficient catalytic system for the [2+2+2] cycloaddition of prochiral triynes with internal alkynes. The optimization of the catalytic system allowed the construction of 1,1-disubstituted 1,3-dihydrobenzo[c]furans I [R¹ = Me, n-Pr, t-Bu, Ph; R² = n-Bu, Ph; R³ = Me, SiMe₃; R⁴ = CH₂OMe, CH₂OAc, CH₂OC(O)t-Bu, CH₂CO₂Me, CH₂OC(O)Ph] containing a quaternary carbon stereogenic centers in fair yields and moderate enantiomeric excesses. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Recommanded Product: 16356-02-8).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Recommanded Product: 16356-02-8

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

All-Solid-State Vertical Three-Terminal N-Type Organic Synaptic Devices for Neuromorphic Computing was written by Xie, Zhichao;Zhuge, Chenyu;Zhao, Yanfei;Xiao, Wei;Fu, Yujun;Yang, Dongliang;Zhang, Shunpeng;Li, Yingtao;Wang, Qi;Wang, Yazhou;Yue, Wan;McCulloch, Iain;He, Deyan. And the article was included in Advanced Functional Materials in 2022.Category: ethers-buliding-blocks This article mentions the following:

Artificial synaptic devices are the basic composition units for neuromorphic computing processors that realize massive parallel computing. However, the n-type organic transistors have failed to achieve good performance as an artificial synaptic device for neuromorphic computing until now. Here, a vertical three-terminal n-type organic artificial synapse (TNOAS) using a lithium ion-based organic dielec. and the n-type donor-acceptor (D-A) conjugated polymer-naphthalene-1,4,5,8-tetracarboxylic-diimide-thiophene-vinyl-thiophene (NDI-gTVT) as the channel is proposed. The TNOAS achieves nonvolatile conductance modulation with high c.d. operation (�0 KA cm^-2) at low voltage and mimics the basic functions of biol. synapses, such as long-term synaptic plasticity and paired-pulse facilitation. The min. energy consumption of a response event triggered by a single action potential is 6.16 pJ, which can be comparable with p-type counterparts. Moreover, simulation using handwritten digital datasets exhibit a high recognition accuracy of 94%. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Category: ethers-buliding-blocks).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Photochemical Cleavage and Release of Para-Substituted Phenols from α-Keto Amides was written by Ma, Chicheng;Chen, Yugang;Steinmetz, Mark G.. And the article was included in Journal of Organic Chemistry in 2006.Product Details of 1877-75-4 This article mentions the following:

In aqueous media α-keto amides 4-YC₆H₄OCH₂COCON(R)CH(R’)CH₃ (5a, R = Et, R’ = H; 5b, R = ⁱPr, R’ = Me) with para-substituted phenolic substituents (Y = CN, CF₃, H) undergo photocleavage and release of 4-YC₆H₄OH with formation of 5-methyleneoxazolidin-4-ones 7a,b. For both 5a,b quantum yields range from 0.2 to 0.3. The proposed mechanism involves transfer of hydrogen from an N-alkyl group to the keto oxygen to produce zwitterionic intermediates 8a–c that eliminate the para-substituted phenolate leaving groups. The resultant iminium ions H₂C:C(OH)CON⁺(R):C(R’)CH₃ 9a,b cyclize intramolecularly to give 7a,b. The quantum yields for photoelimination decrease in CH₃CN, CH₂Cl₂, or C₆H₆ due to competing cyclization of 8a,b to give oxazolidin-4-one products which retain the leaving group 4-YC₆H₄O^– (Y = H, CN). A greater tendency to undergo cyclization in nonaqueous media is observed for the N,N-di-Et amides 5a than the N,N-diisopropyl amides 5b. With para electron releasing groups Y = CH₃ and OCH₃ quantum yields for photoelimination significantly decrease and 1,3-photorearrangement of the phenolic group is observed The 1,3-rearrangement involves excited state ArO-C bond homolysis to give para-substituted phenoxyl radicals, which can be observed directly in laser flash photolysis experiments In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Product Details of 1877-75-4).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Product Details of 1877-75-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Studies on mixed trialkyltin derivatives. VII. Studies of [(phenyldimethylsilyl)methyl]dicyclohexyltin carboxylates was written by Xie, Qing-lan;Sha, Yin-lin;Yang, Zhi-qiang. And the article was included in Chemical Research in Chinese Universities in 1995.Reference of 1877-75-4 This article mentions the following:

Seventeen derivatives of mixed trialkyltin carboxylates (PhMe₂SiCH₂)Cy₂SnO₂CR were synthesized from ((PhMe₂SiCH₂)Cy₂Sn)₂O and RCO₂H. The results of IR, NMR (¹H, ¹³C, ¹¹⁹Sn) and MS showed that this kind of compounds is four-coordinated and that there are two good linear relations between the δ ¹¹⁹Sn and Hammett constants of para-substituent of the corresponding aryloxyacetates and arylcarboxylates. These compounds have a good acaricidal activity in the preliminary bioassay tests. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Reference of 1877-75-4).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Reference of 1877-75-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Enantioselective iridium-catalyzed carbonyl isoprenylation via alcohol-mediated hydrogen transfer was written by Xiang, Ming;Luo, Guoshun;Wang, Yuankai;Krische, Michael J.. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2019.COA of Formula: C7H9NO2 This article mentions the following:

Highly enantioselective iridium catalyzed carbonyl (2-vinyl)allylation or “isoprenylation” was developed for the synthesis of methylenealkenols I [R = cyclopropyl, 2-FC₆H₄, 2-thienyl, etc.] via hydrogen auto-transfer or 2-propanol-mediated reductive coupling of primary alcs. or aldehydes, resp. with tert-butyl-2-methylenebut-3-enyl carbonate. Using this method, asym. total syntheses of the terpenoid natural products, (+)-ipsenol and (+)-ipsdienol were also achieved. In the experiment, the researchers used many compounds, for example, (6-Methoxypyridin-2-yl)methanol (cas: 63071-12-5COA of Formula: C7H9NO2).

(6-Methoxypyridin-2-yl)methanol (cas: 63071-12-5) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.COA of Formula: C7H9NO2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem