Month: January 2023

A Versatile and Inexpensive Apparatus for Rapid Parallel Synthesis on Solid Support: Description and Synthesis Illustration was written by Saha, Ashis K.;Liu, Li;Simoneaux, Richard L.. And the article was included in Journal of Combinatorial Chemistry in 2001.Quality Control of 4-Butoxybenzene-1-sulfonyl chloride This article mentions the following:

A new inexpensive and practical apparatus for solid-phase chem. and parallel synthesis is described. This new apparatus fills an important void in the availability of portable tools for the synthesis of libraries of compounds in multi-milligram amounts Individual reaction tube capacities range in size from 4 mL to 500 mL of operating liquid volume Reaction blocks of 36 tubes × 4 mL or 24 tubes × 150 mL allow flexibility of operation. Insert tubes with frit ends function as filter sticks for resin wash and for maintenance of inert atm. An electronic controller device connects to the reaction tubes for programmable entry of pulses of inert gas for resin mixing or vacuum for resin wash. The utility of this apparatus is illustrated by the synthesis of a library of N-(imidazolylmethyl)arylsulfonamides. In the experiment, the researchers used many compounds, for example, 4-Butoxybenzene-1-sulfonyl chloride (cas: 1138-56-3Quality Control of 4-Butoxybenzene-1-sulfonyl chloride).

4-Butoxybenzene-1-sulfonyl chloride (cas: 1138-56-3) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. 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 4-Butoxybenzene-1-sulfonyl chloride

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

Efficient Divergent Synthesis of 2�O,4�C-Ethylene-Bridged Nucleic Acid (ENA) Phosphoramidites was written by Abe, Yuzo;Ukai, Kazutoshi;Michida, Makoto. And the article was included in Organic Process Research & Development in 2022.Application of 76-83-5 This article mentions the following:

2â€?O,4â€?C-Ethylene-bridged nucleic acid (ENA) phosphoramidites are highly promising modified nucleic acid monomers discovered by Daiichi Sankyo. To increase the productivity of manufacturing, we have developed a highly efficient synthetic method for ENA phosphoramidites. The basic concept of the new synthetic route is “divergent synthesis” for the preparation of four types of monomers such as A, G, C, and T. We applied stereoselective glycosylation reactions without utilizing neighboring group participation to set a common intermediate in the downstream of the route. In the experiment, the researchers used many compounds, for example, (Chloromethanetriyl)tribenzene (cas: 76-83-5Application of 76-83-5).

(Chloromethanetriyl)tribenzene (cas: 76-83-5) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations.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 76-83-5

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

Rearrangements Encountered in the Attempted Syntheses of Pyridoazepinone Carboxylic Acids was written by Sanders, William J.;Zhang, Xiaolin;Wagner, Rolf. And the article was included in Organic Letters in 2004.Application In Synthesis of Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate This article mentions the following:

Attempts to synthesize pyridoazepinone carboxylic acids by standard methodologies resulted exclusively in unusual and unexpected rearrangement products. Seven-membered ring formation was attempted by ring expansion of a six-membered ring and by aldol ring closure. In each case, the major product resulted from rearrangement of the starting material without detection of the desired product. Ultimately, an isomeric pyridoazepinone Et ester was prepared; however, attempted saponification resulted in another unusual rearrangement. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Application In Synthesis of Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate).

Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6) 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. 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 In Synthesis of Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate

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

Changes in Sewage Sludge Chemical Signatures During a COVID-19 Community Lockdown, Part 1: Traffic, Drugs, Mental Health, and Disinfectants was written by Nason, Sara L.;Lin, Elizabeth;Eitzer, Brian;Koelmel, Jeremy;Peccia, Jordan. And the article was included in Environmental Toxicology and Chemistry in 2022.Electric Literature of C13H9Cl3N2O This article mentions the following:

The early months of the COVID-19 pandemic and the associated shutdowns disrupted many aspects of daily life and thus caused changes in the use and disposal of many types of chems. While records of sales, prescriptions, drug overdoses, and so forth provide data about specific chem. uses during this time, wastewater and sewage sludge anal. can provide a more comprehensive overview of chem. changes within a region. We analyzed primary sludge from a wastewater-treatment plant in Connecticut, USA, collected March 19 to June 30, 2020. This time period encompassed the 1st wave of the pandemic, the initial statewide stay at home order, and the 1st phase of reopening. We used liquid chromatog.-high-resolution mass spectrometry and targeted and suspect screening strategies to identify 78 chems. of interest, which included pharmaceuticals, illicit drugs, disinfectants, UV filters, and others. We analyzed trends over time for the identified chems. using linear trend analyses and multivariate comparisons. We found trends related directly to the pandemic (e.g., hydroxychloroquine, a drug publicized for its potential to treat COVID-19, had elevated concentrations in the week following the implementation of the US Emergency Use Authorization), as well as evidence for seasonal changes in chem. use (e.g., increases for 3 UV-filter compounds). Though wastewater surveillance during the pandemic has largely focused on measuring severe acute respiratory syndrome-coronavirus-2 RNA concentrations, chem. anal. can also show trends that are important for revealing the public and environmental health effects of the pandemic. In the experiment, the researchers used many compounds, for example, 1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2Electric Literature of C13H9Cl3N2O).

1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2) 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.Electric Literature of C13H9Cl3N2O

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

Changes in Hydrocarbon Composition and Autochthonous Microorganism Growth of Contaminated Mining Soil During Bioremediation was written by Lopez-Miranda, Javier;Cisneros-de la Cueva, Sergio;Paez-Lerma, Jesus Bernardo;Rojas-Contreras, Juan Antonio;Soto-Cruz, Nicolas Oscar. And the article was included in Water, Air, & Soil Pollution in 2018.Recommanded Product: 3386-33-2 This article mentions the following:

The goal of this study was to evaluate the effect of high Tween 80 concentrations on hydrocarbon contaminants and hydrocarbonoclastic microorganisms present in contaminated mining soil during a bioremediation process. The independent variables included Tween 80 concentration and process time. The elected response variables included concentration of total petroleum hydrocarbons (TPH), the chem. composition of contaminants, viable microbial count, and CO₂ production These were measured at various time points during the bioremediation process, which was conducted at room temperature Higher removal of pollutants occurred at low Tween 80 concentrations An anal. of the normalized variables shows that the rate of TPH degradation depended on microbial growth rate, which depended on Tween 80 concentration The addition of Tween 80 changed the concentration and type of the residual hydrocarbon contaminants present, as well as the count and genus of the hydrocarbonoclastic microorganisms that grew during the bioremediation process. Higher concentrations of Tween 80 increased the levels of the chem. compounds present in the bioremediated soil while reducing the viable count and microbial diversity during the bioremediation process. Conversely, low Tween 80 concentrations produced only monoethylhexyl phthalate, which is not a petroleum hydrocarbon derivative Overall, these results prove that the removal of TPH is dependent on the count and genus of active indigenous hydrocarbonoclastic microorganisms in soil, and these conditions may be controlled by modulating the concentration of Tween 80 that is applied. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Recommanded Product: 3386-33-2).

1-Chlorooctadecane (cas: 3386-33-2) 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. 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: 3386-33-2

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

Studies on fused-ring mesoionic thiazolo[3,2-a]thiazolo[5,4-d]pyrimidine system was written by Talukdar, P. B.;Sengupta, S. K.;Datta, A. K.. And the article was included in Indian Journal of Chemistry in 1983.Product Details of 7476-66-6 This article mentions the following:

Cyclodehydration of 5-carboxymethylmercaptothiazolo[5,4-d]pyrimidine-7(6H)-ones I (R = SMe, NHPh; R¹ = Me, Ph; R² = Ph) with Ac₂O readily affords new fused-ring mesoionic systems II. I (R² = H) fail to give pure products under similar treatment, but the thiazolium perchlorate, III were acylated to give pure mesoionic ketones II (R = SMe, R¹ = Me, R² = Ac, COC₆H₄NO₂-4). II furnish alc. adducts. In the experiment, the researchers used many compounds, for example, Methyl 2-chloro-2-phenylacetate (cas: 7476-66-6Product Details of 7476-66-6).

Methyl 2-chloro-2-phenylacetate (cas: 7476-66-6) 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. 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.Product Details of 7476-66-6

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

Synthesis and evaluation of homo-bivalent GnRHR ligands was written by Bonger, Kimberly M.;van den Berg, Richard J. B. H. N.;Heitman, Laura H.;IJzerman, Ad P.;Oosterom, Julia;Timmers, Cornelis M.;Overkleeft, Herman S.;van der Marel, Gijsbert A.. And the article was included in Bioorganic & Medicinal Chemistry in 2007.SDS of cas: 697-73-4 This article mentions the following:

G protein coupled receptors (GPCRs) are important drug targets in pharmaceutical research. Traditionally, most research efforts have been devoted towards the design of small mol. agonists and antagonists. An interesting, yet poorly investigated class of GPCR modulators comprise the bivalent ligands, in which two receptor pharmacophores are incorporated. Here, we set out to develop a general strategy for the synthesis of bivalent compounds based on the imidazopyrimidinone I that are projected to bind to the human gonadotropin-releasing hormone receptor (GnRHR). Our results on the dimerization of a known GnRHR antagonist, with as key step the Huisgen 1,3-cycloaddition, and their ability to bind to and antagonize GnRH-induced GnRHR stimulation, are presented here. In the experiment, the researchers used many compounds, for example, 2-(Chloromethyl)-1,3-difluorobenzene (cas: 697-73-4SDS of cas: 697-73-4).

2-(Chloromethyl)-1,3-difluorobenzene (cas: 697-73-4) 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.SDS of cas: 697-73-4

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

Essential Oil of Deverra tortuosa Aerial Parts: Detailed Chemical Profile, Allelopathic, Antimicrobial, and Antioxidant Activities was written by Fayed, Eman M.;Abd-EIGawad, Ahmed M.;Elshamy, Abdelsamed I.;El-Halawany, El-Sayed F.;EI-Amier, Yasser A.. And the article was included in Chemistry & Biodiversity in 2021.HPLC of Formula: 3386-33-2 This article mentions the following:

Essential oils (EOs) are a promising group of natural products of the aromatic plants due to their various biol. effects such as allelopathic, antioxidant, antimicrobial activities. The present study aimed to construct the detailed chem. profile of the EO derived from Deverra tortuosa aerial parts along with assessing its allelopathic, antimicrobial, and antioxidant potentialities. The EO was extracted by hydrodistillation and analyzed via gas chromatog.-mass spectrometry (GC/MS). The allelopathic activity of the EO was assessed against the germination and seedling growth of the weed Chenopodium murale. Also, the EO was tested against five microbes. The antioxidant activity was determined using the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). The GC/MS anal. of EO revealed the presence of 86 compounds with a preponderance of oxygenated sesquiterpenes and monoterpene hydrocarbons. Widdrol, β-phellandrene, piperitol, cubedol, α-terpinene, (E)-10-heptadecen-8-ynoic acid Me ester, citronellyl tiglate, and m-cymene were the major compounds A comparative profile was established between the EOs constituents of our study with the documented EOs of D. tortuosa and the other Deverra species around the world via agglomerative hierarchical clustering (AHC) and principal components anal. (PCA). The EO showed a substantial allelopathic activity against C. murale, as well as it showed considerable antimicrobial and antioxidant activities. Thereby, the EO of D. tortuosa could be considered as a promising environmental-friendly bioherbicide against weeds. Also, it could be integrated into food preservation due to its potent antimicrobial and antioxidant activities. However, further study is recommended for more characterization of the major compounds and evaluation of their activities, either singular or synergistic, and assess their efficiency and biosafety. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2HPLC of Formula: 3386-33-2).

1-Chlorooctadecane (cas: 3386-33-2) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.HPLC of Formula: 3386-33-2

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

Hydrogenation of Carbon Dioxide with Organic Base by PC^IIP-Ir Catalysts was written by Takaoka, Satoko;Eizawa, Aya;Kusumoto, Shuhei;Nakajima, Kazunari;Nishibayashi, Yoshiaki;Nozaki, Kyoko. And the article was included in Organometallics in 2018.Product Details of 39722-81-1 This article mentions the following:

Novel PCP-Ir^I monochloride complexes [[(1,3-^tBu₂PCH₂)₂BzIm]IrCl] (1-Cl, BzIm-H₂ = 2-benzimidazolylidene) and [[(1,3-^tBu₂PCH₂CH₂)₂Im]IrCl] (2-Cl, Im-H₂ = 2-imidazolylidene) bearing a phosphine-carbene-phosphine pincer type ligand were synthesized. Reactions of 1-Cl with hexachloroethane, hydrogen chloride, and lithium triethylborohydride under a dihydrogen atm. afforded PC^IIP-Ir^III trichloride (1-Cl₃), hydride dichloride (1-HCl₂), and trihydride (1-H₃) complexes, resp. The strong electron-donating ability of carbene in PC^IIP-Ir complexes was confirmed by X-ray crystallog. and DFT calculations Moreover, in complex 1-Cl, strong π back-donation from the iridium center to the carbene carbon was observed Hydrogenation of CO₂ with triethanolamine catalyzed by PC^IIP-Ir complexes was investigated. The novel PC^IIP-Ir complex 1-Cl exhibited a longer lifetime in comparison to the PNP-Ir^III complex [(Ph₂PCH₂)₂PyIrH₃] (3-H₃): the turnover number of 1-Cl is significantly higher than that of 3-H₃ (in 46 h, 1-Cl 230000 and 3-H₃ 54000). In the experiment, the researchers used many compounds, for example, Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1Product Details of 39722-81-1).

Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1) 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. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Product Details of 39722-81-1

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

Mechanosynthesis of pharmaceutically relevant sulfonyl-(thio)ureas was written by Tan, Davin;Strukil, Vjekoslav;Mottillo, Cristina;Friscic, Tomislav. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2014.Recommanded Product: 5-Chloro-2-methoxybenzoic acid This article mentions the following:

The authors demonstrate the first application of mechanochem. to conduct the synthesis of sulfonyl-(thio)ureas, including known anti-diabetic drugs tolbutamide, chlorpropamide and glibenclamide, in good to excellent isolated yields by either stoichiometric base-assisted or copper-catalyzed coupling of sulfonamides and iso(thio)cyanates. In the experiment, the researchers used many compounds, for example, 5-Chloro-2-methoxybenzoic acid (cas: 3438-16-2Recommanded Product: 5-Chloro-2-methoxybenzoic acid).

5-Chloro-2-methoxybenzoic acid (cas: 3438-16-2) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. 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).Recommanded Product: 5-Chloro-2-methoxybenzoic acid

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