Category: 615-36-1

615-36-1, Name is 2-Bromoaniline, molecular formula is C6H6BrN, belongs to bromides-buliding-blocks compound, is a common compound. In a patnet, author is Yang, Xu, once mentioned the new application about 615-36-1, Recommanded Product: 615-36-1.

Experimental rainwater divalent mercury speciation and photoreduction rates in the presence of halides and organic carbon

Mercury (Hg) photochemical redox reactions control atmospheric Hg lifetime and therefore play an important role in global Hg cycling. Oxidation of Hg(0) to Hg(II) is currently thought to be a Br-initiated two-stage reaction with end-products HgBr2, HgBrOH, HgBrONO, HgBrOHO. Atmospheric photoreduction of these Hg(II) compounds can take place in both the gas and aqueous phase. Here we present new experimental observations on aqueous Hg(II) photoreduction rates in the presence of dissolved organic carbon and halides and compare the findings to rainfall Hg( II) photoreduction rates. The pseudo first-order, gross photoreduction rate constant, k(red), for 0.5 mu MHg(II) in the presence of 0.5mg/L of dissolved organic carbon (DOC) is 0.23 h(-1), which is similar to the mean kred (0.15 +/- 0.01 h(-1)(sigma, n = 3)) in high altitude rainfall and at the lower end of the median kred (0.41 h(-1), n= 24) in continental and marine waters. Addition of bromide (Br-) to experimental Hg(II)-DOC solutions progressively inhibits Hg(II) photoreduction to reach 0.001 h(-1) at total Br- of 10mM. Halide substitution experiments give Hg(II)X-n((n-2)) photoreduction rate constants of 0.016, 0.004 h(-1), and b detection limit for X = Cl-, Br-, and I- respectively and reflect increasing stability of the Hg(II)-halide complex. We calculate equilibrium Hg(II) speciation in urban and high-altitude rainfall using Visual Minteq, which indicates Hg(II)-DOC to be the dominant Hg species. The ensemble of observations suggests that atmospheric gaseous HgBr2, HgCl2, HgBrNO2, HgBrHO2 forms, scavenged by aqueous aerosols and cloud droplets, are converted to Hg(II)-DOC forms in rainfall due to abundant organic carbon in aerosols and cloud water. Eventual photoreduction of Hg (II)-DOC in aqueous aerosols and clouds is, however, too slow to be relevant in global atmospheric Hg cycling. (C) 2019 Elsevier B.V. All rights reserved.

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One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 615-36-1, Name is 2-Bromoaniline, formurla is C6H6BrN. In a document, author is Das, Sourav, introducing its new discovery. SDS of cas: 615-36-1.

Studies on the self-aggregation, interfacial and thermodynamic properties of a surface active imidazolium-based ionic liquid in aqueous solution: Effects of salt and temperature

The influence of four sodium salts (NaCl, NaBr, Na2SO4, and Na3PO4) on the self-aggregation, interfacial, and thermodynamic properties of a surface active ionic liquid (1-hexadecyl-3-methylimidazolium chloride, C(16)MImCl) has been explored in aqueous solutions by conductometry, tensiometry, spectrofluorimetry, isothermal titration calorimetry and dynamic light scattering (DLS). Analyses of the critical micellar concentration (cmc) values indicate that the anions of the added salts promote the self-aggregation of C(16)MImCl in the order: Cl- < Br- < PO43-< SO42-. Dehydration of imidazolium head groups, in general, governs the process of micellization of aqueous C(16)MImCl in presence of the investigated salts within the investigated temperature range (298.15-318.15 K), while the melting of iceberg takes the leading role below 303.15 K for the C(16)MImCl-Na3PO4 system. The results indicate that addition of salt leads to a greater spontaneity of micellization, and that exothermicity prevails in these systems. Differential effect of the salts on the interfacial properties of C(16)MeImCl has been interpreted on the basis of the coupled influence of the electrostatic charge neutralization of surfactants at the interface, and the van der Wa-als repulsion of surfactant tails and electrostatic repulsion of surfactant head groups. C(16)MeImCl has been predicted to form spherical micelles in presence of varying amounts of NaCl, Na2SO4 and Na3PO4, while there occurs probably a transition in the micellar geometry from spherical to non-spherical shape when added NaBr concentration exceeds 0.01 mol.kg(-1). Fluorescence studies demonstrate that a combined quenching mechanism is operative for the quenching of pyrene fluorescence in the investigated C(16)MImCl-salt systems. Micellar aggregation numbers obtained from Steady State Fluorescence Quenching method have always been found be somewhat smaller than those estimated from Time Resolved Fluorescence Quenching method. The order of instability of the C(16)MImCl-micelles ascertained from Zeta potential measurements conform to what has been inferred from the cmc values. The hydrodynamic diameters of C(16)MImCl-micelles, obtained from DLS studies, have been found to increase with increasing salinity of the solutions. (C) 2020 Published by Elsevier B.V. I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 615-36-1 help many people in the next few years. SDS of cas: 615-36-1.

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 615-36-1, name is 2-Bromoaniline, This compound has unique chemical properties. The synthetic route is as follows., Safety of 2-Bromoaniline

In a 250 mL round bottom flask, 4.0 g (23.3 mmol) of 2-bromoaniline, 16.1 g (116.5 mmol) of anhydrous potassium carbonate, 7.3 mL (116.5 mmol) of methyl iodide (CH3I) and 50 mL of acetonitrile (MeCN) were added and heated. Up to 70 C.After stirring at 70 C for 18 h, the reaction mixture was cooled to room temperature.It was extracted with 100 mL of deionized water and 100 mL of diethyl ether. After the organic phase is separated,The aqueous phase was washed with 3 x 50 mL diethyl ether. The combined organic phase was washed with 5 x 50 mL of saturated brine.The organic phase was then dried over anhydrous magnesium sulfate. Next, the volatile component in the organic phase was distilled off under reduced pressure to give a crude material. The crude product was separated by silica gel column chromatography to yield 2.7 g of pale yellow oily liquid.The eluent was diethyl ether / hexane (5 / 95 v / v), yield 69%. Relevant characterization data is consistent with the literature reported above.

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 615-36-1.

Reference:
Patent; Hubei University; Liu Li; Chen Bulin; (14 pag.)CN108586536; (2018); A;,
Bromide – Wikipedia,
bromide – Wiktionary

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 615-36-1, name is 2-Bromoaniline, A new synthetic method of this compound is introduced below., Recommanded Product: 615-36-1

General procedure: The 25 mL RB flask was charged with arylboronic acid (1 mmol), N-nucleophile (2 mmol), Ni(OAc)2*4H2O/1a (10 mol % of Ni(II) salt and 20 mol % of 1a), TMG (2 mmol), and toluene (1 ml). The reaction mixture was stirred at 60 C for 24 h. After completion of the reaction, the reaction mixture was cooled to room temperature, diluted with ethyl acetate (20 mL), and washed with brine water. The combined organic phase was dried over anhydrous Na2SO4. After removal of the solvent, the residue was subjected to column chromatography on silica gel using hexane to afford the Chan-Lam product in high purity.

The synthetic route of 615-36-1 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Keesara, Srinivas; Tetrahedron Letters; vol. 56; 48; (2015); p. 6685 – 6688;,
Bromide – Wikipedia,
bromide – Wiktionary

Some common heterocyclic compound, 615-36-1, name is 2-Bromoaniline, molecular formula is C6H6BrN, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. 615-36-1

General procedure: Compound 2b-l were synthesized according to the reported method:1A mixture of aniline (10 mmol), iodoalkane (22 mmol) and K2CO3(22mmol) in DMF (80 mL) was refluxed at 75 C. After completion of thereaction monitored by TLC, the mixture was poured into aqueous NaHCO3solution and extracted with ethyl acetate. The organic layer was washed with brine,dried over sodium sulfate and concentrated in vacuo. Purification by columnchromatography on silica gel produced N,N-dimethylanilines 2b-l.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 615-36-1, its application will become more common.

Reference:
Article; Shen, Hang; Zhang, Xiaohui; Liu, Qing; Pan, Jing; Hu, Wen; Xiong, Yan; Zhu, Xiangming; Tetrahedron Letters; vol. 56; 41; (2015); p. 5628 – 5631;,
Bromide – Wikipedia,
bromide – Wiktionary