Tag: 200-300

Hybrid nanofiltration thin film hollow fiber membranes with adsorptive supports containing bentonite and LDH nanoclays for boron removal was written by Ghiasi, Sanaz;Mohammadi, Toraj;Tofighy, Maryam Ahmadzadeh. And the article was included in Journal of Membrane Science in 2022.Electric Literature of C9H3Cl3O3 This article mentions the following:

This study focused on removal of boron from water via hybrid nanofiltration (NF) thin film composite (TFC) hollow fiber (HF) membranes. To do so, nanocomposite polyvinyl chloride (PVC) HF membranes containing bentonite and layered double hydroxide (LDH) nanoparticles as natural and synthetic adsorbents were fabricated as the adsorptive support layers with high efficiency in boron removal. The phase inversion behavior of dope solutions and mech. strength of the adsorptive nanocomposite PVC HF membranes were investigated and the results showed that LDH interacts better with PVC polymeric chains than bentonite. It was found that LDH with smaller pores and better adsorption capability in comparison with bentonite results in more hydrophilic membranes with better performance. On the other hand, bentonite tends to become agglomerated at above 1.5 wt%. Moreover, the fabricated membranes containing LDH have lower MWCO and more uniform pore size distribution which make them better options as support for the TFC layer formation to fabricate NF TFC membranes. The selective TFC layer was then fabricated via interfacial polymerization of m-phenylenediamine (MPD) and 1,3,5- benzenetricarbonyl trichloride (TMC) on the outer layer of the nanocomposite PVC HF membranes. Boron removal, and recovery and reusability of the fabricated NF TFC membranes were investigated by Na₂CO₃ solution It was found that the NF TFC membranes containing LDH with boron removal of more than 83.6% and water flux of 16.1 L/m2.h at 4 bar operational pressure exhibit better performance than the NF TFC membranes containing bentonite. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Electric Literature of C9H3Cl3O3).

Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Electric Literature of C9H3Cl3O3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis and Pharmacophore Modeling of 2,6,9-Trisubstituted Purine Derivatives and Their Potential Role as Apoptosis-Inducing Agents in Cancer Cell Lines was written by Calderon-Arancibia, Jeannette;Espinosa-Bustos, Christian;Canete-Molina, Alvaro;Tapia, Ricardo A.;Faundez, Mario;Torres, Maria Jose;Aguirre, Adam;Paulino, Margot;Salas, Cristian O.. And the article was included in Molecules in 2015.Application of 203436-45-7 This article mentions the following:

A series of 2,6,9-trisubstituted purine derivatives I (R¹ = i-Pr, Bu, i-Bu, i-Pe, Hx, Pe; R² = H, OMe) have been synthesized and investigated for their potential role as antitumor agents. Twelve compounds were obtained by a three step synthetic procedure using microwave irradiation in a pivotal step. All the synthesized compounds were evaluated in vitro to determine their potential effect on cell toxicity by the MTT method and flow cytometry anal. on four cancer cells lines and Vero cells. Three out of twelve compounds were found to be promising agents compared to a known and effective anticancer drug, etoposide, in three out of four cancer cell lines assayed with considerable selectivity. The preliminary flow cytometry data suggests that compounds mentioned above induce apoptosis on these cells. The main structural requirements for their activity for each cancer cell line were characterized with a preliminary pharmacophore model, which identified aromatic centers, hydrogen acceptor/donor center, and a hydrophobic area. These features were consistent with the cytotoxic activity of the assayed compounds In the experiment, the researchers used many compounds, for example, 2,6-Dichloro-9-isopropyl-9H-purine (cas: 203436-45-7Application of 203436-45-7).

2,6-Dichloro-9-isopropyl-9H-purine (cas: 203436-45-7) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Application of 203436-45-7

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Zwitterion grafted forward osmosis membranes with superwetting property via atom transfer radical polymerization was written by Yao, Xuesong;Guan, Kecheng;Sasaki, Yuji;Shintani, Takuji;Nakagawa, Keizo;Matsuyama, Hideto. And the article was included in Journal of Applied Polymer Science in 2022.Category: chlorides-buliding-blocks This article mentions the following:

A superwetting forward osmosis membrane was prepared by grafting a zwitterion (2-methacryloyloxyethyl phosphorylcholine, MPC) onto the polyamide membrane layer via atom transfer radical polymerization (ATRP) to enhance antifouling property. The modification of the hydrophilic layer was confirmed by the characterization including Fourier-transform IR spectroscopy (FTIR), XPS, and contact angle goniometer. Moreover, membrane antifouling performance was evaluated by dynamic membrane fouling test using bovine-serum-albumin (BSA) and sodium alginate (SA). The grafted membranes not only showed high fouling resistance after being exposed to up to 500 ppm SA for 10 h, but also demonstrated excellent water flux recovery with the presence of up to 1000 ppm BSA, which was significantly improved as compared to the unmodified membrane. Robust hydration layer formed by the grafted zwitterion polymer could act as a phys. and energy barrier preventing attachment of organic foulants on the membrane surface, thus significantly improving membrane fouling resistance. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Category: chlorides-buliding-blocks).

Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Category: chlorides-buliding-blocks

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

N-chloro amides, lactams, carbamates, and imides. New classes of initiators for the metal-catalyzed living radical polymerization of methacrylates was written by Percec, Virgil;Grigoras, Cristian. And the article was included in Journal of Polymer Science, Part A: Polymer Chemistry in 2005.Safety of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide This article mentions the following:

Metal-catalyzed living radical polymerization of Me methacrylate initiated with N-chloro amides (N-chloro N-Et propionamide, N-chloro benzanilide, N-chloro methylbenzamide, and N-chloro acetanilide), lactams (N-chloro caprolactam and N-chloro 2-pyrrolidinone), carbamates or urethanes (N-chloro ethylcarbamate or N-chlorourethane), imides (N-chloro phthalimide, N-chloro succinimide, trichloroisocyanuric acid, and N-chloro saccharin) and catalyzed with the self-regulated catalytic system Cu₂S/2,2′-bipyridine is reported. The initiation efficiency of these initiators is determined by their structure. Regardless of the initiator efficiency, in all cases, poly(Me methacrylate) with narrow mol. weight distribution and functionalized chain-ends was obtained. These new classes of initiators open new strategies for the functionalization of polymer chain-ends and for the synthesis of complex architectures by graft copolymerization initiated from N-chloro proteins, aliphatic, aromatic and semiarom. polyamides, and polyurethanes. In the experiment, the researchers used many compounds, for example, 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (cas: 14070-51-0Safety of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide).

2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (cas: 14070-51-0) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Safety of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Ultra-thin microporous membranes based on macrocyclic pillar[n]arene for efficient organic solvent nanofiltration was written by Fu, Wenming;Huang, Yangzheng;Deng, Luyao;Sun, Jiahao;Li, Shao-Lu;Hu, Yunxia. And the article was included in Journal of Membrane Science in 2022.Application of 4422-95-1 This article mentions the following:

Organic solvent nanofiltration (OSN) is a green, environmentally friendly and sustainable separation technol. High-performance OSN membranes are expected to play a critical role in the field of chem. separation involving organic solvents. However, traditional OSN membranes suffer from the constraints on perm-selectivity. Herein, we introduced macrocyclic mols. with intrinsic angstrom-size cavity, pillar[n]arene (P[n]a, n = 5, 6), as a novel aqueous monomer to react with trimesoyl chloride (TMC) to prepare highly perm-selective thin-film composite (TFC) OSN membranes through interfacial polymerization The prepared TFC-P[n]a membranes exhibit ultra-thin selective layer thickness of sub-10 nm and possess permanent intrinsic microporous structure, which endows the membrane with high perm-selectivity. Especially, the TFC-P[6]a membrane exhibits a high methanol permeance (8.10 L m^-2 h^-1 bar^-1) and a low mol. weight cut-off (MWCO) of 300 g mol^-1. In addition, the prepared TFC-P[n]a membranes exhibit mol. sieving function and could discriminate mols. with similar mol. weights but different shapes. Our work provides an insight of material design for the preparation of next-generation high-performance organic solvent nanofiltration membranes. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Application of 4422-95-1).

Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Application of 4422-95-1

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis of the precursors of iminosugars with 7-membered ring was written by Osuch-Kwiatkowska, Anna;Jarosz, Slawomir. And the article was included in Carbohydrate Research in 2022.Safety of (Chloromethanetriyl)tribenzene This article mentions the following:

D-Glucose was converted into the orthogonally protected open-chain derivative having different blocks at both terminal positions: C1 and C6. Selective deprotection of the C1-position opened a route to intermediate with the D-gluco-configuration, while deprotection at the C6-position gave the L-gulo isomer. In both derivatives, the oxime functionality was installed at the proper terminal position, which produced the corresponding precursors of a family of 7-membered ring iminosugars. One of these oximes was converted into the direct precursor 6,1-bromonitrile I. In the experiment, the researchers used many compounds, for example, (Chloromethanetriyl)tribenzene (cas: 76-83-5Safety of (Chloromethanetriyl)tribenzene).

(Chloromethanetriyl)tribenzene (cas: 76-83-5) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Safety of (Chloromethanetriyl)tribenzene

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Conversion of thiols into sulfonyl halogenides under aerobic and metal-free conditions was written by Jereb, Marjan;Hribernik, Luka. And the article was included in Green Chemistry in 2017.Electric Literature of C7H4ClF3O2S This article mentions the following:

An environmentally benign, metal-free synthesis of sulfonyl chlorides and bromides from thiols in the presence of ammonium nitrate, an aqueous solution of HCl and HBr and oxygen as a terminal oxidant was developed. The reactivity of various substituted thiophenols, benzylic-, aliphatic- and heteroaromatic thiols was examined Ammonium nitrate served as a source of nitrogen oxides (NO/NO₂), which are the crucial players in a redox-catalytic cycle. Sulfonyl chlorides and bromides were isolated without extraction and “filtered” over a short pad of silica gel; the use of solvents was greatly reduced in comparison with traditional isolation and purification A “one-pot” protocol for the conversion of thiol into sulfonamide is also demonstrated. Scale-up experiments on the preparation of sulfonyl chloride and bromide are shown. A possible reaction pathway is discussed. In the experiment, the researchers used many compounds, for example, 3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6Electric Literature of C7H4ClF3O2S).

3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Electric Literature of C7H4ClF3O2S

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis of carba-analogues of myoseverin by regioselective cross-coupling reactions of 2,6-dichloro-9-isopropylpurine was written by Hocek, Michal;Votruba, Ivan;Dvorakova, Hana. And the article was included in Tetrahedron in 2003.Recommanded Product: 2,6-Dichloro-9-isopropyl-9H-purine This article mentions the following:

A series of 9-isopropylpurine derivatives bearing 4-methoxyphenyl, 4-methoxybenzyl, (4-methoxyphenyl)ethynyl and 2-(4-methoxyphenyl)ethyl groups in positions 2 and 6 were prepared as carba-analogs of antimitotic myoseverin. Cross-coupling reactions of 2,6-dichloro-9-isopropylpurine (I) with one equivalent of (4-methoxyphenyl)boronic acid or (4-methoxybenzyl)zinc chloride gave regioselectively the 6-substituted 2-chloropurines which were used for another cross-coupling reaction with a second equivalent of the organometallic reagent. The Sonogashira reaction of I with 4-(methoxyphenyl)ethyne gave 2,6-bis[(4-methoxyphenyl)ethynyl]-9-isopropylpurine that was hydrogenated to 2,6-bis[2-(4-methoxyphenyl)ethyl]–isopropylpurine. Regioselectivity of the couplings was proved by means of ¹H-¹⁵N HMBC experiments 2,6-Bis[(4-methoxyphenyl)ethynyl]-9-isopropylpurine showed considerable cytostatic activity, while the other compounds were inactive. In the experiment, the researchers used many compounds, for example, 2,6-Dichloro-9-isopropyl-9H-purine (cas: 203436-45-7Recommanded Product: 2,6-Dichloro-9-isopropyl-9H-purine).

2,6-Dichloro-9-isopropyl-9H-purine (cas: 203436-45-7) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Recommanded Product: 2,6-Dichloro-9-isopropyl-9H-purine

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Expanding Pd-Catalyzed C-N Bond-Forming Processes: The First Amidation of Aryl Sulfonates, Aqueous Amination, and Complementarity with Cu-Catalyzed Reactions. [Erratum to document cited in CA139:117168] was written by Huang, Xiaohua;Anderson, Kevin W.;Zim, Danilo;Jiang, Lei;Klapars, Artis;Buchwald, Stephen L.. And the article was included in Journal of the American Chemical Society in 2003.Quality Control of tert-Butyl (4-chlorophenyl)carbamate This article mentions the following:

An important reference pertinent to the Pd-catalyzed amination in water was omitted on page 6655. The work by Boche and co-workers (Wullner, G.; Jansch, H.; Kannenberg, S.; Schubert, F.; Boche, G. Chem. Commun. 1998, 1509-1510) describes one example of aryl amination in water and several examples of aryl amination in aqueous solvent mixtures using NaOH as base. In the experiment, the researchers used many compounds, for example, tert-Butyl (4-chlorophenyl)carbamate (cas: 18437-66-6Quality Control of tert-Butyl (4-chlorophenyl)carbamate).

tert-Butyl (4-chlorophenyl)carbamate (cas: 18437-66-6) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Quality Control of tert-Butyl (4-chlorophenyl)carbamate

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Preparation of nanocomposite aromatic polyamide reverse osmosis membranes by in-situ polymerization of bis(triethoxysilyl)ethane (BTESE) was written by Zheng, Feng-Tao;Qu, Jianbo;Sun, Zhou. And the article was included in Journal of Membrane Science in 2022.Quality Control of Trimesoylchloride This article mentions the following:

Bis(triethoxysilyl)ethane (BTESE) nanoparticles were incorporated into aromatic polyamide (PA) membranes via in-situ polymerization to prepare BTESE nanocomposite PA (BTESE-TFN) membranes for reverse osmosis. In-situ polymerization was utilized to produce BTESE nanoparticles with high dispersion in PA membranes by adding BTESE as precursors into PA membranes for in-situ polymerization Organic bridged -C-C- in BTESE provided enhanced compatibility between BTESE nanoparticles and PA membranes. The BTESE-TFN membranes showed durability with stable RO performance for more than 96 h because of the high dispersion of BTESE nanoparticles and enhanced compatibility between BTESE nanoparticles and PA membranes. The BTESE nanoparticles increased surface roughness, thickness, hydrophilicity of PA membranes. The BTESE nanoparticles changed surfaces of PA membranes to looser structure with more pores and gaps. However, low loadings of BTESE nanoparticles in the BTESE-TFN membranes were observed due to low reactivity of Si-OC₂H₅ groups in BTESE. Even so, salt rejection of prepared TFN-0.12 membrane was slightly improved to 96.81%, compared with that of prepared pristine PA membrane. The TFN-0.12 membrane showed water flux of 1.6 L/(m²•h•bar), 25% higher than the water flux of pristine PA membrane because of enlargement of pore sizes in BTESE nanoparticles, formation of a loose and rough membrane surface and enhancement of hydrophilicity of the membrane surface. Furthermore, modification of organic bridged groups in the BTESE exhibited great potential to further optimize the water flux and durability of BTESE-TFN membranes. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Quality Control of Trimesoylchloride).

Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Quality Control of Trimesoylchloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics