Tag: M.W=150-200

Hu, Min; Ding, Liang; Shehzad, Muhammad A.; Ge, Qianqian; Liu, Yahua; Yang, Zhengjin; Wu, Liang; Xu, Tongwen published the artcile< Comb-shaped anion exchange membrane with densely grafted short chains or loosely grafted long chains?>, Name: 1-(Chloromethyl)-4-vinylbenzene, the main research area is comb shaped anion exchange membrane densely grafted chain.

Anion exchange membranes (AEMs) are crucial components for advanced energy and environment processes including alk. fuel cells, redox flow batteries, and industrial effluent treatment; while low anionic conductivity and poor stability remain the major challenges for the widespread implementation of AEMs. Through mol. engineering, comb-shaped AEMs have been proved possessing the capability of delivering both high conductivity and good alk. stability. However, how to precisely control the side chain topol. and how the chain topol. would influence the membrane properties need to be further elucidated. We hereby propose a radically novel and readily scalable route towards the controllable synthesis of comb-shaped AMEs and we were able to determine the length of side chains and the number of ionic groups along the side chains. To probe the effect of side chain topol. on membrane properties, two types of AEMs of densely grafted short side chains or loosely grafted long side chains with similar ion exchange capacity (IEC, ∼1.7 mmol/g) were synthesized and compared. We found that the comb-shaped AEMs with loosely grafted long chains (LG-LS-DIm), with higher hydroxide conductivity (55 mS cm-1 at 30 °C) and better alk. stability (∼80 % of IEC retention after soaking in 2 mol L-1 NaOH solution at 60 °C for 25 days), outperform those with densely grafted short chains (HG-SS-DIm) and the benchmark main-chain type AEMs (DIm-PPO), which is also superior to those of conventional linear AEMs with densely functionalized structure.

Journal of Membrane Science published new progress about Acrylic polymers, polyoxyphenylene-, graft Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), SPN (Synthetic Preparation), TEM (Technical or Engineered Material Use), PROC (Process), PREP (Preparation), USES (Uses). 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Name: 1-(Chloromethyl)-4-vinylbenzene.

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

Wang, Wen-Li; Jin, Ren-Hua published the artcile< Synthesis and self-assembly of amphiphilic comb-copolymers possessing polyethyleneimine and its derivatives: Site-selective formation of loop-cluster covered vesicles and flower micelles>, Formula: C9H9Cl, the main research area is comb copolymer polyethyleneimine derivative vesicle flower micelle.

Amphiphilic block copolymers have attracted a considerable amount of attention in the past two decades because of their ability to self-organize into various complex nanostructures. Most of these studies concentrated on linear amphiphilic block copolymers. In this work, we focused our attention on two type unique comb-like copolymers which grafting amphiphilic diblocked side chains onto main chain of polystyrenic backbone. One is Type-I in which a block of hydrophilic polymers is located inside near to the backbone while other block of hydrophobic poly (phenyl-2-oxazoline) [PPOZ] is in outside far away the backbone. The other one is Type-O in which the hydrophobic block of PPOZ is grafted (inside) onto the main chain backbone then the hydrophilic block is joined (outside) on the PPOZ. A series of five kinds of Type-I and five kinds of Type-O comb-like block copolymers with different components of the amphiphiles were prepared We performed self-assembly of them in a DMF/water or methanol/water (volume/volume, 1/9) media. All of Type-O comb-like block copolymers formed micelle. In contrast, in the case of Type-I, interestingly, the comb-like block copolymers possessing hydrophilic blocks with crystalline feature formed loop-cluster covered vesicles, while the others having non-crystalline hydrophilic blocks formed flower-like micelle. We proposed the self-organizing mechanism of these two types comb-like block copolymers and provides new mol. design strategy for the site-selective fabrication of vesicle/micelle possessing special surface structures.

Polymer published new progress about Crystallinity. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Formula: C9H9Cl.

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

Chandrasekhar, K. B.; Narisetty, Rajasekhar published the artcile< Synthesis, characterization and antibacterial evaluation of some novel hydrazone derivatives of 3-chloro-4-hydroxy-benzoic acid>, SDS of cas: 3964-57-6, the main research area is hydrazone chloro hydroxybenzoic acid preparation antibacterial.

The synthesis and antibacterial activity of a series of fifteen new hydrazide-hydrazone derivatives I (R = 4-MeO, 4-F, 4-CF3, 2-CF3, 2,4-F2, etc.) via coupling of methyl-3-chloro-4-hydroxybenzoate and 3-chlorobenzyl chloride is reported. The newly synthesized fifteen hydrazone derivatives I have been screened against four chosen bacterial strains viz., E. coli, P. aeruginosa, S. aureus and S. pyogenes with ampicillin as the standard drug. It is observed that compounds I (R = 2,4-F2, 3,4-F2, 2-Me-4-F)exhibit excellent antibacterial activity (zone of inhibition 21-24 mm), while compounds having 4-CF3, 4-OCF3 and 2-CF3 substituents display equipotent antibacterial activity (zone of inhibition 19-22 mm).

Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry published new progress about Antibacterial agents. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, SDS of cas: 3964-57-6.

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

Ponomarenko, A. A. published the artcile< Synthesis of monochlorophthalic anhydrides from mononitrophthalic anhydrides>, Product Details of C8H3ClO3, the main research area is .

See C.A. 44, 7810b.

Zhurnal Obshchei Khimii published new progress about 118-45-6. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Product Details of C8H3ClO3.

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

Deguchi, Toru; Xin, Hai-Long; Morimoto, Hiroyuki; Ohshima, Takashi published the artcile< Direct Catalytic Alcoholysis of Unactivated 8-Aminoquinoline Amides>, Application In Synthesis of 22717-55-1, the main research area is nickel catalyzed alcoholysis unactivated aminoquinoline amide.

Direct catalytic alcoholysis of unactivated amides is one of the most difficult challenges in organic chem., and an applicable method for cleaving amides used as directing groups in regioselective functionalization reactions has not been reported. Herein, authors report direct catalytic alcoholysis of 8-aminoquinoline amides, which are highly effective directing groups in regioselective functionalization reactions. The reactions proceeded with a simple combination of substrates, air-stable catalysts, and alcs., affording the corresponding esters in good yields with broad functional group tolerance. Highly chemoselective cleavage of the 8-aminoquinoline amides in the presence of related carbonyl functionalities and preliminary mechanistic studies are also described.

ACS Catalysis published new progress about Alcoholysis. 22717-55-1 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Application In Synthesis of 22717-55-1.

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

Song, Ziyu; Xu, Ke; Li, Jing; Xie, Yayun; Li, Xiang; Huang, Shuai; Gao, Feng; Chen, Lin; Zhou, Xianli published the artcile< SEmi-Synthetic Chasmanthinine Analogues With Antifeedant Effects Against Spodoptera Exigua>, Category: chlorides-buliding-blocks, the main research area is Spodoptera larvae antifeedant chasmanthinine.

The synthesis and structure modification of active natural lead compounds is an important approach for the discovery of novel green pesticides. Nineteen derivatives of chasmanthinine, a natural C19-diterpenoid alkaloids, were prepared, and their structures were unambiguously determined by 1H NMR, 13C NMR, and HR-ESI-MS. Moreover, the antifeedant activities of title compounds were evaluated against larvae of Spodoptera exigua (Hubner). The results illustrated that compounds p with a thienyl group at the C-14 position (EC50 = 0.10 mg/cm2) showed the strongest antifeedant activities among all tested compounds This present study is the first report on the antifeedant effects of synthetic chasmanthinine analogs aganist S. exigua (Hubner) larvae.

Heterocycles published new progress about Esterification. 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Category: chlorides-buliding-blocks.

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

Zhou, Yin; Gao, Cheng-Feng; Ma, Hai; Nie, Jing; Ma, Jun-An; Zhang, Fa-Guang published the artcile< Quadruple Functionalized Pyrazole Pharmacophores by One-pot Regioselective [3+2] Cycloaddition of Fluorinated Nitrile Imines and Dicyanoalkenes>, HPLC of Formula: 17082-09-6, the main research area is difluoromethyl aryl hydrazonyl chloride dicyanialkene regioselective cycloaddition cyclooxygenase inhibition; aryl difluoromethyl cyanopyrazole preparation; trifluroromethylaryl hydrazonyl chloride dicyanialkene regioselective cycloaddition cyclooxygenase inhibition; trifluoromethyl aryl cyanopyrazole preparation; COX-2 inhibitors; cycloaddition; di/trifluoromethyl group; pharmacophores; pyrazoles.

A quadruple functionalization approach for the modular construction of fully substituted N1-aryl 3-di/trifluoro-methyl-4/5-cyanopyrazole pharmacophores from readily available hydrazonyl chlorides and dicyanoalkenes was presented. The realization of this [3+2] cycloaddition reaction hinges upon the employment of N-aryl di/trifluoromethyl nitrile imines as the 1,3-dipoles to bypass external synthetic steps and dicyanoalkenes as the dipolarophiles to tune the regioselectivity. This one-pot strategy offered access to a divergent library of cyano analogs of prevalent 3-di/trifluoromethyl pyrazole pharmacophores, among which several compounds have shown potent inhibitory activity towards cyclooxygenase 2 (COX-2) compared with marketed drug Celecoxib.

Chemistry – An Asian Journal published new progress about [3+2] Cycloaddition reaction (regioselective). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, HPLC of Formula: 17082-09-6.

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

Dashan, Irem; Balta, Demet Karaca; Temel, Binnur Aydogan; Temel, Gokhan published the artcile< Preparation of single chain nanoparticles via photoinduced radical coupling process>, Formula: C9H9Cl, the main research area is chain nanoparticle photoinduced radical coupling.

This contribution introduces a straightforward method for preparing well-defined polymeric nanoparticles using radical coupling process of ketyl moieties resulted from triplet excitation of pendant benzophenone groups. In the first step, poly(styrene-co-chloromethylstyrene) is synthesized by thermally initiated controlled radical copolymerization technique and subsequently, pendant chloride groups undergo post-modification with 4-hydroxybenzophenone. Achieved well-defined side-chain benzophenone containing copolymers generate ketyl radicals in the presence of excess hydrogen donor mol. upon UV-light irradiation and intramolecularly crosslinked nanoparticles are formed by radical coupling process in dilute regime. Resulting single chain nanoparticles and intermediates are characterized by 1H NMR, gel permeation chromatog., differential scanning calorimetry, UV-Vis spectrometry and electron microscopy techniques.

European Polymer Journal published new progress about Glass transition temperature. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Formula: C9H9Cl.

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

Ippolito, Joseph A.; Niu, Haichan; Bertoletti, Nicole; Carter, Zachary J.; Jin, Shengyan; Spasov, Krasimir A.; Cisneros, Jose A.; Valhondo, Margarita; Cutrona, Kara J.; Anderson, Karen S.; Jorgensen, William L. published the artcile< Covalent Inhibition of Wild-Type HIV-1 Reverse Transcriptase Using a Fluorosulfate Warhead>, SDS of cas: 16766-30-6, the main research area is covalent inhibitor HIV1 RT fluorosulfate warhead preparation.

Covalent inhibitors of wild-type HIV-1 reverse transcriptase (CRTIs) are reported. Three compounds derived from catechol diether non-nucleoside inhibitors (NNRTIs) with addition of a fluorosulfate warhead are demonstrated to covalently modify Tyr181 of HIV-RT. X-ray crystal structures for complexes of the CRTIs with the enzyme are provided, which fully demonstrate the covalent attachment, and confirmation is provided by appropriate mass shifts in ESI-TOF mass spectra. The three CRTIs and six noncovalent analogs are found to be potent inhibitors with both IC50 values for in vitro inhibition of WT RT and EC50 values for cytopathic protection of HIV-1-infected human T-cells in the 5-320 nM range.

ACS Medicinal Chemistry Letters published new progress about Anti-HIV agents (anti-HIV-1 agents, Anti-HIV-1 drugs). 16766-30-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H7ClO2, SDS of cas: 16766-30-6.

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

Ghiasbeigi, Elahe; Soleiman-Beigi, Mohammad published the artcile< Ammonium salts as economical and eco-friendly N-sources applied to green, simple and scale-up synthesis of trialkyl amines in water>, Computed Properties of 611-19-8, the main research area is trialkyl amine preparation green chem; alkyl halide alkylation.

A selective synthesis of tertiary amines R3N (R = benzyl, (2-methylphenyl)methyl, prop-2-en-1-yl, etc.) using alkyl halide RX and ammonium salts as the amine sources in water have been introduced. This green process has outstanding superiorities, such as being eco-friendly, possessing ammonium salts, and using water as a green solvent in the absence of organic ligands or catalysts. It is worth mentioning that the presence of t-Bu alc. and potassium hydroxide leads to synthesize tertiary amines, while under other conditions the formation of byproducts was witnessed. Other factors affecting the synthesis of various tertiary amines are temperature ranges. Note that various tertiary amines and the process of scale-up were synthesized in moderate to high yields.

Iranian Chemical Communication published new progress about Alkylation. 611-19-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H6Cl2, Computed Properties of 611-19-8.

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