Author: Jessica.F

Role of pKa in establishing crystal structures of six hydrogen-bonded compounds of with different isomers of chloro- and nitro-substituted benzoic acids was written by Ishida, Hiroyuki. And the article was included in Acta Crystallographica, Section E: Crystallographic Communications in 2021.Category: chlorides-buliding-blocks This article mentions the following:

The structures of the six hydrogen-bonded 1:1 compounds of 4-methylquinoline (C₁₀H₉N) with chloro- and nitro-substituted benzoic acids (C₇H₄ClNO₄), namely, 4-methylquinolinium 2-chloro-4-nitrobenzoate, C₁₀H₁₀N⁺·C₇H₃ClNO^4-, (I), 4-methylquinoline-2-chloro-5-nitrobenzoic acid (1/1), C₁₀H₉N·C₇H₄ClNO₄, and (II), 4-methylquinolinium 2-chloro-6-nitrobenzoate, C₁₀H_9.63N_0.63⁺·C₇H_3.37ClNO₄^0.63-. The (III), 4-methylquinolinium 3-chloro-2-nitrobenzoate, C₁₀H_9.54N^0.54+·C₇H_3.46ClNO₄^0.54-, (IV), 4-methylquinolinium 4-chloro-2-nitrobenzoate, C₁₀H₁₀N⁺·C₇H₃ClNO^4-, (V), and 4-methylquinolinium 5-chloro-2-nitrobenzoate, C₁₀H₁₀N⁺·C₇H₃ClNO^4-, have been determined at 185-190 K. In each compound, the acid and base mols. are linked by a short hydrogen bond between a carboxy (or carboxylate) O atom and an N atom of the base. The O···N distances are 2.5652 (14), 2.556 (3), 2.5485 (13), 2.5364 (13), 2.5568 (13) and 2.5252 (11) Å, resp., for compounds (I)-(VI). In the hydrogen-bonded acid-base units of (III) and (IV), the H atoms are each disordered over two positions with O site:N site occupancies of 0.37 (3):0.63 (3) and 0.46 (3):0.54 (4), resp., for (III) and (IV). The H atoms in the hydrogen-bonded units of (I), (V) and (VI) are located at the N-atom site, while the H atom in (II) is located at the O-atom site. In all the crystals of (I)-(VI), π-π stacking interactions between the quinoline ring systems and C-H···O hydrogen bonds are observed Similar layer structures are constructed in (IV)-(VI) through these interactions together with π-π interactions between the benzene rings of the adjacent acid mols. A short Cl···Cl contact and an N-O···π interaction are present in (I), while a C-H···Cl hydrogen bond and a π-π interaction between the benzene ring of the acid mol. and the quinoline ring system in (II), and a C-H···π interaction in (III) are observed Hirshfeld surfaces for the title compounds mapped over dnorm and shape index were generated to visualize the weak intermol. interactions. In the experiment, the researchers used many compounds, for example, 2-Chloro-6-nitrobenzoic acid (cas: 5344-49-0Category: chlorides-buliding-blocks).

2-Chloro-6-nitrobenzoic acid (cas: 5344-49-0) 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.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.Category: chlorides-buliding-blocks

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

Synthetic routes to 1,5-diazacyclooctanes via 2,6-dioxo-1,5-diazabicyclo[3.3.1]octanes was written by Kemp, D. S.;Sidell, M. D.;Shortridge, T. J.. And the article was included in Journal of Organic Chemistry in 1979.Recommanded Product: 5335-05-7 This article mentions the following:

Reactions of 3-pyrazolidinones with primary β-chloropropionyl chlorides provide a satisfactory synthetic route to 2,6-dioxo-1,5-diazabicyclo[3.3.0]octanes I (R = H, Me). The corresponding secondary halides cannot be induced to undergo cyclization. The Stetter procedure, reaction of acrylic acid derivatives with hydrazine at 200°, provides an acceptable route to derivatives that bear 4- or 8-alkyl substituents. Reactions of I with NaNH₂ in NH₃ generate sodium enolates that undergo C-alkylation and C-acylation reactions in high yield. Two new procedures are described for reduction of I to 1,5-diazacyclooctanes, treatment with diborane in refluxing THF and Na-NH₃ treatment, followed by reduction by LiAlH₄. Reductions of I with Na-NH₃ or by sodium naphthalenide in dimethoxyethane generate 2,6-dioxo-1,5-diazacyclooctanes in excellent yield. Convenient preparations of 3,6-dibromohexanoic acid and 2-acetyl-3-chloro-2-methylpropionic acid are described. In the experiment, the researchers used many compounds, for example, Chloromethyl benzoate (cas: 5335-05-7Recommanded Product: 5335-05-7).

Chloromethyl benzoate (cas: 5335-05-7) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Recommanded Product: 5335-05-7

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

Optimal 10-aminoartemisinins with potent transmission-blocking capabilities for new artemisinin combination therapies-activities against blood stage P. falciparum Including PfKI3 C580Y mutants and liver stage P. berghei parasites was written by Wong, Ho Ning;Padin-Irizarry, Vivian;van der Watt, Mariette E.;Reader, Janette;Liebenberg, Wilna;Wiesner, Lubbe;Smith, Peter;Eribez, Korina;Winzeler, Elizabeth A.;Kyle, Dennis E.;Birkholtz, Lyn-Marie;Coertzen, Dina;Haynes, Richard K.. And the article was included in Frontiers in Chemistry (Lausanne, Switzerland) in 2019.SDS of cas: 777-44-6 This article mentions the following:

We have demonstrated previously that amino-artemisinins including artemiside and artemisone in which an amino group replaces the oxygen-bearing substituents attached to C-10 of the current clin. artemisinin derivatives dihydroartemisinin (DHA), artemether and artesunate, display potent activities in vitro against the asexual blood stages of Plasmodium falciparum (Pf). In particular, the compounds are active against late blood stage Pf gametocytes, and are strongly synergistic in combination with the redox active drug methylene blue. In order to fortify the eventual selection of optimum amino-artemisinins for development into new triple combination therapies also active against artemisinin-resistant Pf mutants, we have prepared new amino-artemisinins based on the easily accessible and inexpensive DHA-piperazine. The latter was converted into alkyl- and aryl sulfonamides, ureas and amides. These derivatives were screened together with the comparator drugs DHA and the hitherto most active amino-artemisinins artemiside and artemisone against asexual and sexual blood stages of Pf and liver stage P. berghei (Pb) sporozoites. Several of the new amino-artemisinins bearing aryl-urea and -amide groups are potently active against both asexual, and late blood stage gametocytes (IC₅₀ 0.4-1.0 nM). Although the activities are superior to those of artemiside (IC₅₀ 1.5 nM) and artemisone (IC₅₀ 42.4 nM), the latter are more active against the liver stage Pb sporozoites (IC₅₀ artemisone 28 nM). In addition, early results indicate these compounds tend not to display reduced susceptibility against parasites bearing the Pf Kelch 13 propeller domain C580Y mutation characteristic of artemisinin-resistant Pf. Thus, the advent of the amino-artemisinins including artemiside and artemisone will enable the development of new combination therapies that by virtue of the amino-artemisinin component itself will possess intrinsic transmission-blocking capabilities and may be effective against artemisinin resistant falciparum malaria. In the experiment, the researchers used many compounds, for example, 3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6SDS of cas: 777-44-6).

3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.SDS of cas: 777-44-6

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

Facile preparation of pliable superamphiphobic papers with high and durable liquid repellency for anti-corrosion and open surface microfluidics was written by Jiao, Long;Xu, Qian;Tong, Jiangyi;Liu, Shuai;Hu, Yanjun;Guo, Qianqian;Wu, Huaping;Li, Wei;Zhao, Qinxin;Chen, Rong. And the article was included in Applied Surface Science in 2022.Recommanded Product: 61-73-4 This article mentions the following:

Flexible superamphiphobic surfaces show significant potential in anti-fouling, flexible electronics, droplet-based microfluidics, etc. However, there is a bottleneck in quickly generating pliable superamphiphobic surfaces with high liquid repellency and practicability. Here, a new method was proposed to create a superamphiphobic surface with high and durable liquid repellency by effortlessly one-step spraying the fluorinated TiO₂ nanoparticles onto the polymer paper. Even 90 vol% ethanol solution could keep the Cassie state on the surface. The adhesion strengthening of the nanoparticles agglomerates on the paper’s wires generated excellent robustness for resisting underwater ultrasonic shock, resulting in a failure time 2000-times longer than the smooth substrate. No significant degeneration of the paper was observed after storing for 90 days, bending for 1000 cycles, or heating at 200°C. Because of the attractive figurability, the paper could quickly fit on curved surfaces or internal walls. As a proof of concept, the superamphiphobic paper was successfully used for deformable anti-corrosion shelter and droplet-based anal. platform. This work opens a new avenue for accomplishing the long-sort task of efficiently fabricating flexible superamphiphobic surfaces with high comprehensive performances. In the experiment, the researchers used many compounds, for example, 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4Recommanded Product: 61-73-4).

3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4) 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 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.Recommanded Product: 61-73-4

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

Detection of stx2 from Shiga toxin-producing Escherichia coli (STEC) by a surface enhanced Raman spectroscopy (SERS) sensor using recycled silicon chips was written by Yang, Yuqing;Wasiewska, Luiza Adela;Burgess, Catherine M.;Duffy, Geraldine;Lovera, Pierre;O’Riordan, Alan. And the article was included in Sensors and Actuators, B: Chemical in 2022.Safety of 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride This article mentions the following:

In this research, a selective, cost-efficient, and highly sensitive Ag nanostructure Surface Enhanced Raman Spectroscopy sensor was developed as a methodol. approach to rapidly detect a targetss-DNA (stx2) in STEC (Shiga toxin-producing Escherichia coli). The Ag nanostructure-based SERS substrate was functionalized by two types of thiols: thiol-ss-DNA for bonding target ss-DNA and 6-Mercapto-1-hexanol for blocking the Ag nanostructure surface. Methylene Blue (MB) was used as a Raman marker to quantify target ss-DNA, as well as a model mol. to characterize the electrodeposited Ag nanostructure SERS substrate. Ag nanostructure SERS substrates showed good sensitivity and repeatability towards MB detection, with a LOD = 0.3158μM, and RSD = 12.48% (at 45 different random points for 0.1μM MB). More importantly, the Ag nanostructure/ss-DNA SERS substrate showed good selectivity towards STEC O157 stx2 target DNA, as well as good linearity and sensitivity towards its detection in a buffer solution The SERS sensors were able to identify target DNA (stx2) in a STEC strain and the study showed proof of principle that SERS substrate has potential as a cost-effective, highly selective, highly sensitive DNA and bacteria sensor without the aid of DNA amplification. With further development and validation, this methodol. approach has the potential for point-of-use detection for instance on a farm or in the food industry. In the experiment, the researchers used many compounds, for example, 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4Safety of 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride).

3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. 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.Safety of 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride

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

Construction of axial chirality via asymmetric radical trapping by cobalt under visible light was written by Jiang, Xuan;Xiong, Wei;Deng, Shuang;Lu, Fu-Dong;Jia, Yue;Yang, Qian;Xue, Li-Yuan;Qi, Xiaotian;Tunge, Jon A.;Lu, Liang-Qiu;Xiao, Wen-Jing. And the article was included in Nature Catalysis in 2022.Related Products of 620-19-9 This article mentions the following:

The 3d metals have been identified as economic and sustainable alternatives to palladium, the frequently used metal in transition-metal-catalyzed cross-couplings. However, cobalt has long stood behind its neighboring elements, nickel and copper,in asym. radical couplings owing to its high catalytic activity in the absence of ligands resulting in unfavorable un-asym. background reactions. Here, the authors disclose an asym. metallaphotoredox catalysis (AMPC) strategy for the dynamic kinetic asym. transformation of racemic heterobiaryls, which represents a visible-light-induced, asym. radical coupling for the construction of axial chirality. This success can also extended to the reductive cross-coupling variant featuring the use of more easily available organic halide feedstocks. The keys to these achievements are the rational design of a sustainable AMPC system that merges asym. cobalt catalysis with organic photoredox catalysis in combination with the identification of an efficient chiral polydentate ligand. In the experiment, the researchers used many compounds, for example, 1-(Chloromethyl)-3-methylbenzene (cas: 620-19-9Related Products of 620-19-9).

1-(Chloromethyl)-3-methylbenzene (cas: 620-19-9) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. 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.Related Products of 620-19-9

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

Absolute configuration of endo-dicyclopentadiene. Crystal and molecular structure of (+)-(endo-dicyclopentadiene)platinum dichloride was written by Avitabile, G.;Ganis, P.;Lepore, U.;Panunzi, A.. And the article was included in Inorganica Chimica Acta in 1973.Recommanded Product: Dichlorodi(cyclopenta-1,3-dien-1-yl)platinate(II) This article mentions the following:

The absolute configuration of the dissym. olefin endo-dicyclopentadiene was determined This was achieved through the determination of the crystal and mol. structure of (+) (endo-dicyclopentadiene)platinum dichloride, which crystallizes in orthorhombic space group P212121 with cell parameters a 12.65 ± 0.05, b 12.40 ± 0.05, c 13.07 ± 0.05 Å, with d. (observed) = 2.56 and d. (x-ray) = 2.58 for Z = 8. In the experiment, the researchers used many compounds, for example, Dichlorodi(cyclopenta-1,3-dien-1-yl)platinate(II) (cas: 12083-92-0Recommanded Product: Dichlorodi(cyclopenta-1,3-dien-1-yl)platinate(II)).

Dichlorodi(cyclopenta-1,3-dien-1-yl)platinate(II) (cas: 12083-92-0) 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.Recommanded Product: Dichlorodi(cyclopenta-1,3-dien-1-yl)platinate(II)

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

Design and synthesis of prodrugs of the rat selective toxicant norbormide was written by Rennison, David;Laita, Olivia;Bova, Sergio;Cavalli, Maurizio;Hopkins, Brian;Linthicum, Darwin S.;Brimble, Margaret A.. And the article was included in Bioorganic & Medicinal Chemistry in 2012.Related Products of 5335-05-7 This article mentions the following:

Norbormide [5-(α-hydroxy-α-2-pyridylbenzyl)-7-(α-2-pyridylbenzylidene)-5-norbornene-2,3-dicarboximide] (NRB), an existing but infrequently used rodenticide, is known to be uniquely toxic to rats but relatively harmless to other rodents and mammals. However, one major drawback of NRB as a viable rodenticide relates to an evolutionary aversion developed by the rat leading to sub-lethal dosing due to either its unpleasant taste or rapid onset of effects. A series of NRB prodrugs were prepared in an effort to mask this acute response. Their synthesis and biol. evaluation (in vitro vasoconstrictory activity, in vitro hydrolytic and enzymic stability and lethality/palatability in vivo) is described. Compound 19 displayed the most promising profile with respect to a delay in the onset of symptoms and was subsequently demonstrated to be significantly more palatable to rats. In the experiment, the researchers used many compounds, for example, Chloromethyl benzoate (cas: 5335-05-7Related Products of 5335-05-7).

Chloromethyl benzoate (cas: 5335-05-7) 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. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Related Products of 5335-05-7

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

Design, synthesis and biological evaluation of novel 2,4-disubstituted quinazoline derivatives targeting H1975 cells via EGFR-PI3K signaling pathway was written by Wang, Zhengjie;Liu, Limin;Dai, Honglin;Si, Xiaojie;Zhang, Luye;Li, Erdong;Yang, Zhang;Chao, Gao;Zheng, Jiaxin;Ke, Yu;Shan, Lihong;Zhang, Qiurong;Liu, Hongmin. And the article was included in Bioorganic & Medicinal Chemistry in 2021.Quality Control of 2,4-Dichlorophenylisothiocyanate This article mentions the following:

In order to find new and highly effective anti-tumor drugs with targeted therapeutic effects, a series of novel 4-aminoquinazoline derivatives containing N-phenylacetamide structure were designed, synthesized and evaluated for antitumor activity against four human cancer cell lines (H1975, PC-3, MDA-MB-231 and MGC-803) using MTT assay. The results showed that the compound I had the most potent antiproliferative activity against H1975, PC-3, MDA-MB-231 and MGC-803 cell lines. At the same time, compound 19e could significantly inhibit the colony formation and migration of H1975 cells. Compound I also arrested the H1975 cell cycle in the G1 phase and mediated cell apoptosis, promoted the accumulation of ROS in H1975 cells. Furthermore, compound I exerted antitumor effect in vitro by reducing the expression of anti-apoptotic protein Bcl-2 and increasing the pro-apoptotic protein Bax and p53. Mechanistically, compound I could significantly decreased the phosphorylation of EGFR and its downstream protein PI3K in H1975 cells. Which indicated that compound I targeted H1975 cell via interfering with EGFR-PI3K signaling pathway. Mol. docking showed that compound I could bind into the active pocket of EGFR. Those work suggested that compound I would have remarkable implications for further design of anti-tumor agents. In the experiment, the researchers used many compounds, for example, 2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1Quality Control of 2,4-Dichlorophenylisothiocyanate).

2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1) 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.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.Quality Control of 2,4-Dichlorophenylisothiocyanate

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

A simple and straightforward protocol to 3,5-disubstituted 1,2,4-oxadiazoles from carboxylic acids was written by Ramu, Tadikonda;Prasanthi, Sarakula;Mangarao, Nakka;Basha, Gajula Mahaboob;Srinuvasarao, Rayavarapu;Siddaiah, Vidavalur. And the article was included in Chemistry Letters in 2013.Application of 1711-11-1 This article mentions the following:

A convenient one-pot synthesis of 1,2,4-oxadiazoles (e.g. I) is described. The condensation of carboxylic acids and amidoximes in the presence of 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) and N-methylmorpholine (NMM) has been employed to synthesize a variety of 3,5-disubstituted 1,2,4-oxadiazoles in good to excellent yields. The methodol. has been applied for the synthesis of a metabotropic glutamate subtype 5 (mGlu5) receptor antagonist. In the experiment, the researchers used many compounds, for example, 3-Cyanobenzoyl chloride (cas: 1711-11-1Application of 1711-11-1).

3-Cyanobenzoyl chloride (cas: 1711-11-1) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen.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.Application of 1711-11-1

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