Tag: 200-300

On May 7, 2021, Maurya, Mannar R.; Prakash, Ved; Avecilla, Fernando; Sankar, Muniappan published an article.Reference of 2,4-Di-tert-butylphenol The title of the article was Selective Bromination of β-Positions of Porphyrin by Self-Catalytic Behaviour of VOTPP: Facile Synthesis, Electrochemical Redox Properties and Catalytic Application. And the article contained the following:

Oxidovanadium(IV) complex of β-octabromo-meso-tetraphenylporphyrin, {[VIVO(TPPBr8)], 2} was synthesized by self-catalytic oxidative bromination of meso-tetraphenylporphyrinatooxidovanadium(IV) {[VIVO(TPP)], 1} in excellent yield under mild conditions at 25° and its structure was confirmed by single crystal x-ray study. UV-visible and 1H NMR spectra further confirmed that the meso-Ph rings are not brominated and thus emphasizes on the selectivity as well as synthetic importance of this catalytic method. In the presence of substrates e. g. phenol derivatives, 1 biomimics the vanadium bromoperoxidase (VBPO) enzyme and catalyzes the oxidative bromination of substrates in water at 25°. Remarkably, 2 also catalyzes the oxidative bromination of phenol derivatives under similar reaction conditions with very high turnover frequency (TOF) values (∼29 s-1) along with its recyclability. 2 Showed superior catalytic performance as compared to 1 because of its electron deficient nature due to electron withdrawing bromo substituents and robust saddle shaped nonplanar structure (further supported by DFT studies). The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Reference of 2,4-Di-tert-butylphenol

The Article related to vanadium phenylporphyrin bromination preparation crystal structure epr spectra electrochem, bromination phenol vanadium bromo phenylporphyrin catalyst, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.Reference of 2,4-Di-tert-butylphenol

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On January 29, 2020, Mondal, Aditesh; Reddy, Kiran P.; Bertke, Jeffery A.; Kundu, Subrata published an article.Computed Properties of 96-76-4 The title of the article was Phenol Reduces Nitrite to NO at Copper(II): Role of a Proton-Responsive Outer Coordination Sphere in Phenol Oxidation. And the article contained the following:

In the view of physiol. significance, the transition-metal-mediated routes for nitrite (NO2-) to nitric oxide (NO) conversion and phenol oxidation are of prime importance. Probing the reactivity of substituted phenols toward the nitritocopper(II) cryptate complex [mC]Cu(κ2-O2N)(ClO4) (1a), (mC = aza-oxa tripodal heteroditopic cryptand) this report illustrates NO release from nitrite at Cu(II) following a proton-coupled electron transfer (PCET) pathway. Also, a different protonated state of 1a with a proton hosted in the outer coordination sphere, [mCH]Cu(κ2-O2N)(ClO4)2 (3), also reacts with substituted phenols via primary electron transfer from the phenol. Intriguingly, the alternative mechanism operative because of the presence of a proton at the remote site in 3 facilitates an unusual anaerobic pathway for phenol nitration. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Computed Properties of 96-76-4

The Article related to phenol mediated nitrite reduction copper cryptand nitric oxide complex, crystal structure copper zinc azaoxa cryptand nitrite complex, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.Computed Properties of 96-76-4

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On July 20, 2018, Yin, Xuguang; Huang, Yi; Chen, Ziyi; Hu, Yang; Tao, Lin; Zhao, Qingyang; Dong, Xiu-Qin; Zhang, Xumu published an article.HPLC of Formula: 280752-78-5 The title of the article was Enantioselective Access to Chiral 2-Substituted 2,3-Dihydrobenzo[1,4]dioxane Derivatives through Rh-Catalyzed Asymmetric Hydrogenation. And the article contained the following:

Rh-catalyzed asym. hydrogenation of various benzo[b][1,4]dioxine derivatives, e.g. I, was successfully developed to prepare chiral 2-substituted 2,3-dihydrobenzo[1,4]dioxane derivatives using ZhaoPhos and N-methylation of ZhaoPhos ligands with high yields and excellent enantioselectivities (up to 99% yield, >99% enantiomeric excess (ee), turnover number (TON) = 24,000). Moreover, this asym. hydrogenation methodol., as the key step with up to 10 000 TON, was successfully applied to develop highly efficient synthetic routes for the construction of some important biol. active mols., such as MKC-242, WB4101, BSF-190555 and (R)-doxazosin·HCl. The experimental process involved the reaction of (6-Bromo-2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methanol(cas: 280752-78-5).HPLC of Formula: 280752-78-5

The Article related to rhodium catalyst hydrogenation benzodioxin asym preparation, Heterocyclic Compounds (More Than One Hetero Atom): Dioxanes and other aspects.HPLC of Formula: 280752-78-5

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On January 31, 2018, Subramaniam, Ramalingam; Yasa, Santosh; Bertrand, Tre; Fontenot, Brittany; Dupuis, Thomas F.; Hernandez, Rafael published an article.Name: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol The title of the article was Advanced simulation of H2S scavenging process with triazine at different depths of gas well. And the article contained the following:

Over the 10 years the world has experienced significant growth in global natural gas consumption, rendering natural gas as one of the most important energy sources of the future. However, more than 40% of the natural gas reservoirs are sub quality because of the presence of acid gases like hydrogen sulfide (H2S) and carbon dioxide (CO2). Removal of these impurities from natural gas is of prime importance because of the health, environment, and corrosion issues in pipelines and other processing equipment. Absorption of H2S by 1,3,5-tri-(2-hydroxyethyl)-hexahydro-s-triazine has many advantages in terms of economics and efficiency over alkanolamines. The main objective of this work is to develop a Visual Basic simulation for hydrogen sulfide removal from natural gas at different depths of gas well using triazine. The thermodn. properties of the components, triazine, thiadiazine, and diathiazine estimated from the Aspen Plus have closer agreement with Spartan simulation results. H2S concentration in the clean gas and the triazine requirement per lb of H2S removal at different depths along the well obtained from the Visual Basic simulation were validated with the Coastal Chem. Inc., field data. With the increase in mass flowrate of triazine solution, the H2S concentration in the clean gas decreased, and the amount of triazine required per lb of H2S removal decreased. The developed simulation calculates the quantity of triazine required per lb of H2S removal at different depths of the gas well, which allows the user to determine the optimum depth for maximum H2S removal with min. triazine requirement. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Name: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

The Article related to hydrogen sulfide triazine scavenging process gas well, Fossil Fuels, Derivatives, and Related Products: Natural Gas and other aspects.Name: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

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Lozano, Hugo; Trauffer, Edward A. published an article in 2000, the title of the article was Re-generable H2S scavenger.Synthetic Route of 4719-04-4 And the article contains the following content:

A novel way has been developed to utilize a proprietary catalyst incorporated into the liquid scavenging chem., called ENVIRO-TEK, to regenerate the spent chem. The regeneration is accomplished with air. This technol. innovation has dramatically reduced the cost of removing sulfur from several gas streams. The chem. of the process may be summarized as: REACTION 1 (contactor): triazine (1,3,5-tri(2-hydroxyethyl)hexahydro-s-triazine) + H2S ———-> dithiazine (5,6-dihydro-5-(2-hydroxyethyl)-4H-1,3,5-dithiazine) REACTION 2 (regeneration tank): dithiazine + O2 + catalyst —-> triazine + S0 + H2O. Single use triazine based liquid scavengers have been widely and successfully used in the natural gas industry for a long time to remove small amounts of H2S. The global natural gas industry is projected to spend more than $60 million/yr on chem. scavenging operating costs. However operators have been reporting difficulties in obtaining acceptable H2S removal costs and performance. The process utilizes a scrubbing tower or in line injection to contact the ENVIRO-TEK with the sulfur bearing gas. H2S and mercaptans are removed from the gas in the contactor and the sulfur is chem. bound in the spent chem. The chem. is then regenerated with the use of air in a sep. regeneration tank. Finally, the elemental sulfur formed in the regeneration tank is removed with the use of a solids separation step such as a settling tank, a centrifuge, or a filter press. The regenerated Enviro-tek is then ready for re-use in the scrubbing tower or direct injection pipeline. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Synthetic Route of 4719-04-4

The Article related to natural gas hydrogen sulfide scavenger regeneration, Fossil Fuels, Derivatives, and Related Products: Natural Gas and other aspects.Synthetic Route of 4719-04-4

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On September 1, 2020, Shi, Jingchun; Xu, Caihong; Xiang, Li; Chen, Jianmin; Cai, Zongwei published an article.Computed Properties of 96-76-4 The title of the article was Tris(2,4-di-tert-butylphenyl)phosphate: an unexpected abundant toxic pollutant found in PM2.5. And the article contained the following:

A novel pollutant, tris(2,4-di-tert-butylphenyl)phosphate (I168O), was identified in urban fine particulate matter (PM2.5) samples in a nontargeted screening based on mass spectrometry for the first time. I168O was detected in all samples collected from two typical cities far away from each other in China. The concentrations of I168O reached up to 851 (median: 153) ng/m3, indicating that it was a widespread and abundant pollutant in the air. The antioxidant Irgafos 168 [I168, tris(2,4-di-tert-butylphenyl)phosphite] popularly added in plastics was the most suspected source for the detected I168O. Simulation studies indicated that heating, UV radiation, and water contact might significantly (p < 0.05) transform I168 to I168O. In particular, I168O might be magnificently evaporated into the air at high temperatures The outdoor inhalation exposure of I168O may exert substantial health risks. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Computed Properties of 96-76-4

The Article related to i168o unexpected abundant toxic pollutant pm, Air Pollution and Industrial Hygiene: Industrial Waste Gases and other aspects.Computed Properties of 96-76-4

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Owens, Thomas R.; Clark, Peter D. published an article in 2011, the title of the article was Triazine chemistry: removing H2S and mercaptans.COA of Formula: C9H21N3O3 And the article contains the following content:

Arguably, one of the most common methods for removing low levels of hydrogen sulfide from natural gas (i.e., < 1 ton of sulfur per day) is triazine based chem. scavengers. Triazines are produced from the reaction of primary amines such as monoethanolamine or methylamine with aldehydes, specifically, formaldehyde. Despite their wide spread usage throughout the industry only a few studies have been published regarding the reaction of triazines with hydrogen sulfide. In studies conducted by Bakke and coworkers, the kinetics and reaction products (i.e., dithiazines) for the reaction of different triazines with hydrogen sulfide were investigated under various pH conditions. Another type of sulfur compounds that intermittently needs to be removed from hydrocarbon streams is mercaptans. Although some in the industry have indicated triazines can be used remove mercaptans, there is no specific information in the open literature regarding the reaction of triazines with mercaptans in regards to reaction products or kinetics. In this paper, we present a thorough background into the chem. of triazines, in particular, their reaction with hydrogen sulfide and potential problems produced from the formation of dithiazine. In addition, the current results of a systematic study for the reaction of two triazines, 1,3,5-tris(2-hydroxyethyl)hexahydro-s-triazine (1) and 1,3,5-trimethylhexahydro-s-triazine (2) with different mercaptans: methanethiol (MeSH), ethanethiol (EtSH) and n-propanethiol (n-PrSH) will be presented. The experimental process involved the reaction of 2,2',2''-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).COA of Formula: C9H21N3O3

The Article related to hydrogen sulfide mercaptan triazine chem, Fossil Fuels, Derivatives, and Related Products: Natural Gas and other aspects.COA of Formula: C9H21N3O3

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On January 31, 2022, Kireeva, D. R.; Sadretdinov, S. S.; Musina, A. I.; Ishmetova, D. V.; Vakhitov, V. A.; Murinov, Yu. I.; Dokichev, V. A. published an article.Related Products of 4719-04-4 The title of the article was Synthesis and Cytotoxic Activity of 1,3,5-Triazinane Derivatives Based on Primary Amines and Amino Acids Esters. And the article contained the following:

A series of 1,3,5-triazinane derivatives I (R = n-Pr, Bn, 1-methoxy-4-methyl-1-oxopentan-2-yl, etc.) was synthesized and their cytotoxic activity was studied in vitro on normal cell line (HEK293) and tumor cell lines (SH-SY5Y, MCF-7, A549). It was shown that the studied compounds have moderate cytotoxic activity against normal and tumor cell lines. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Related Products of 4719-04-4

The Article related to triazinane primary amine amino acid ester preparation antitumor cytotoxicity, Heterocyclic Compounds (More Than One Hetero Atom): Triazines and other aspects.Related Products of 4719-04-4

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On August 1, 2021, Hauk, Armin; Pahl, Ina; Dorey, Samuel; Menzel, Roberto published an article.Computed Properties of 96-76-4 The title of the article was Using extractables data from single-use components for extrapolation to process equipment-related leachables: The toolbox and justifications. And the article contained the following:

Quant. information on process equipment-related leachables (PERLs) is required for process qualification and within a safety assessment. Extractables data for single-use equipment are suitable and applicable if the extractables study conditions fit or are bracketing the expected conditions of use. It is necessary to extrapolate extractables data when the expected in-use conditions are not covered by the test conditions. Methods for such quant. extrapolation of extractables data toward potential PERLs are therefore needed. They are comprehensively described in this publication and include: scaling of extractables data for devices of different sizes adjusted to process-volumes, extrapolation to temperatures different from the extraction temperature, extrapolations to different solvent compositions, extrapolation to various contact times, and the combination of extractables data from individual components to assess assemblies. These extrapolation methods yield extractables data as if an extractables study had been performed. The methods presented are consistently derived from basic physicochem. principles. The relevant, underlying phys. parameters are obtained from extractables experiments and are compared with published data. The applicability and justification of the proposed calculation methods are discussed and benchmarked against exptl. findings. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Computed Properties of 96-76-4

The Article related to hexadecane dodecane film temperature phase equilibrium algorithm, Biochemical Methods: Other (Not Covered At Other Subsections) and other aspects.Computed Properties of 96-76-4

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On December 2, 2004, Laufer, Stefan A.; Zimmermann, Werner; Ruff, Kathrin J. published an article.Category: alcohols-buliding-blocks The title of the article was Tetrasubstituted Imidazole Inhibitors of Cytokine Release: Probing Substituents in the N-1 Position. And the article contained the following:

Novel 1,2,4,5-tetrasubstituted imidazole derivatives with high anti-inflammatory activity were prepared by a previously described regiospecific synthesis. Systematic optimization of the imidazole N-1 substituent resulted in compound I that potently inhibited the p38 mitogen-activated protein kinase (p38 IC50 = 0.218 μM) as well as the release of the proinflammatory cytokines interleukin-1β (IL-1β) and tumor necrosis factor α (TNFα) from human whole blood after stimulation with LPS. Furthermore, I exhibited reduced cytochrome P 450 interaction in comparison with SB203580. This result is particularly important, since cytochrome P 450 interaction is observed for some p38 inhibitors and in turn can potentially cause drug-drug interaction or lead to other hepatic changes such as P 450 enzyme induction. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Category: alcohols-buliding-blocks

The Article related to imidazole tetrasubstituted preparation cytokine inhibitor, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.Category: alcohols-buliding-blocks

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