Category: 2924-09-6

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. 2924-09-6, name is 5-Bromo-2-fluoroaniline, A new synthetic method of this compound is introduced below., Formula: C6H5BrFN

98% of 2-fluoro-5-bromonitrobenzene (211 g, 0.96 mol) and iron powder (212 g, 3.8 mol) were mixed, 1200 ml of ethanol was added and glacial acetic acid (456 g, 7.6 mol) was added dropwise at room temperature. The reaction solution was treated with an oil bath at 60 CThe reaction solution was completed by a gas phase controlled reaction. The reaction solution was filtered through a Buchner funnel pad and the filtrate was evaporated to dryness and extracted with ethyl acetateN-heptane (volume ratio 1: 4) was purified by column and evaporated to give pure product 122.5 g, 98% GC, yield 62.5%

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; Dalian Allychem Co., Ltd.; Wang, Xianxue; Zheng, Peng; (5 pag.)CN104530107; (2016); B;,
Bromide – Wikipedia,
bromide – Wiktionary

These common heterocyclic compound, 2924-09-6, name is 5-Bromo-2-fluoroaniline, its 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. Application In Synthesis of 5-Bromo-2-fluoroaniline

Stir the mixture of 5-bromo-2-fluoroaniline (800 mg, 4.26 mmol), cyclopropylboronic acid (434 mg, 5.05 mmol), tetrakis(triphenylphosphine)palladium(0) (242 mg, 0.21 mmol), cesium carbonate (2.7 g, 8.28 mmol) in dioxane (5 mL) and water (0.3 mL) under N2 atmosphere at 100C for 17 hrs. TLC (EtOAc:PE=l :3) shows the reaction is complete. Filter off the solid, concentrate the filtrate. Purify by flash chromatography (silica gel, EtOAc_PE=3:7) to afford the title compound (350 mg, 55%). MS: (M+l): 152.1.

The synthetic route of 5-Bromo-2-fluoroaniline has been constantly updated, and we look forward to future research findings.

Reference:
Patent; CROWN BIOSCIENCE INC. (TAICANG); ZHANG, Deyi; ZHANG, Ruihao; ZHONG, Boyu; SHIH, Chuan; WO2014/418; (2014); A1;,
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. 2924-09-6, name is 5-Bromo-2-fluoroaniline, A new synthetic method of this compound is introduced below., Formula: C6H5BrFN

Reference Example 39 2-Fluoro-5 -mercaptoaniline To a mixture of 5-bromo-2-fluoroaniline (4.15 g), methyl 3-mercaptopropionate (2.62 g), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (0.63 g) and N,N-diisopropylethylamine (5.64 g) in 1,4-dioxane (80 mL) was added tris(dibenzylideneacetone)-dipalladium(0) (0.3 g), and the mixture was heated at reflux under an argon atmosphere overnight. The insoluble material was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate = 20/1 – 5/1 – 2/1) to give 2-fluoro-5-(2-methoxy-carbonylethylthio)aniline (4.62 g). This material was dissolved in tetrahydrofuran (120 mL). To the solution was added potassium tert-butoxide (1 mol/L tetrahydrofuran solution, 80.6 mL) at -78C, and the mixture was stirred at the same temperature for 15 minutes. To the reaction mixture was added 1 mol/L hydrochloric acid (81 mL), and the reaction mixture was allowed to warm to room temperature, and stirred for 5 minutes. The mixture was poured into ethyl acetate, and the organic layer was separated. The organic layer was washed with brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate = 4/1) to give the title compound (1.85 g).

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; Kissei Pharmaceutical Co., Ltd.; EP2143724; (2010); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Reference of 2924-09-6, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 2924-09-6, name is 5-Bromo-2-fluoroaniline belongs to bromides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

General procedure: BSB-Cl 2 (314 mg, 1.2 mmol) and aniline 1 (1mmol) were premixed in THF (10 ml) at0 C to which was added LiHMDS (2 ml, 2 mmol). The resulting mixture was stirred for2 h at this temperature. Upon reaction completion, the solution was concentrated. Theresidue was purified with basic alumina flash chromatography to afford pure product

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 5-Bromo-2-fluoroaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Lu, Erhu; Yadav, Arun; Weaver, Donald F.; Reed, Mark A.; Synlett; vol. 24; 17; (2013); p. 2259 – 2262;,
Bromide – Wikipedia,
bromide – Wiktionary

Electric Literature of 2924-09-6, These common heterocyclic compound, 2924-09-6, name is 5-Bromo-2-fluoroaniline, its 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.

A vial was charged with 5-bromo-2-fluoroaniline (1 g, 5.26 mmol), bis(pinacolato)diboron (1.6 g , 6.31 mmol), potassium acetate (1.03 g, 10.52 mmol), Pd(dppf)Cl2 · CH2C12 (129 mg, 0.158 mmol), and DMF (10 mL) under nitrogenatmosphere. After stirring for 2 h at 100 C the reaction mixture was concentrated in vacuo, the residue was triturated with EtOAc and filtered through a pad of celite. The filtrate was adsorbed on silica gel. Purification by flash silica gel chromatography using a gradient of 0- 30% EtOAc/hexane afforded 1.25 g of pinacol 3-amino-4-fluoroboronate as a light yellow oil (quant.): 1H NMR (CDC13, ppm) delta 1.36 (s, 12H), 3.71 (broad s, 2H), 7.00 (dd, 1H), 7.19 (m, 1H), 7.26 (dd, 1H); [M+H]+ m/z 238.

Statistics shows that 5-Bromo-2-fluoroaniline is playing an increasingly important role. we look forward to future research findings about 2924-09-6.

Reference:
Patent; SELEXAGEN THERAPEUTICS, INC.; VERNIER, Jean-michel; HOPKINS, Stephanie; BOUNAUD, Pierre-Yves; O’CONNOR, Patrick; MATTHEWS, David; BENDER, Steve; WO2012/125981; (2012); A2;,
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of 2924-09-6, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 2924-09-6, name is 5-Bromo-2-fluoroaniline belongs to bromides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

In an argon atmosphere, 106 mL of water was added to 10g of 5-bromo-2-fluoroaniline, and the mixture wasstirred, followed by addition of 79.2 mL of concentrated hydrochloric acid. The resulting mixture was cooled in ice, andan aqueous solution of 4.36g of sodium nitrate was added dropwise. While cooling in ice, the resultant was stirred for30 minutes, and then an aqueous solution of 87.3g of potassium iodide was added. After extraction with ethyl acetate,an organic layer was washed with an aqueous solution of a saturated sodium hydrogen carbonate and an aqueoussolution of sodium sulfite and dried with magnesium sulfate. Then, the solvent was distilled off under reduced pressure.Residues were purified by silica gel column chromatography, whereby 11.5g (yield: 73%) of 5-bromo-2-fluoroiodebenzenewas obtained.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 5-Bromo-2-fluoroaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Idemitsu Kosan Co., Ltd; ITO, Hirokatsu; SAITO, Hiroyuki; MIZUKI, Yumiko; KAWAMURA, Masahiro; EP2924029; (2015); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Some common heterocyclic compound, 2924-09-6, name is 5-Bromo-2-fluoroaniline, molecular formula is C6H5BrFN, 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. Product Details of 2924-09-6

To a stirred solution of chloral hydrate (6.28 g, 37.97 mmol, CAS RN 302-17-0) in water (40 mL) was added Na2504 (43.73 g, 473.68 mmol, CAS RN 7757-82-6) at 25C and the reaction mixture was heated to 35C. Then a warmed mixture of 5-bromo-2-fluoro-phenylamine (6.5 g, 34.21 mmol, CAS RN 2924-09-6), water (40 mL) and concentrated HC1 (6.5 mL) followed by hydroxyl amine hydrochloride (8.08 g, 116.32 mmol, CAS RN 5470-11-1) in water (20 mL)were added to reaction mixture at 35C and reaction mixture was stirred at 90C for 3 h. After cooling to 25C the reaction mixture was filtered, dried and azeotroped with toluene to get the title compound as an off-white solid (7.6 g, 85%). MS (ESI): mlz = 263.1 [M-H].

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2924-09-6, its application will become more common.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; BUETTELMANN, Bernd; KOCER, Buelent; KUHN, Bernd; PRUNOTTO, Marco; RICHTER, Hans; RITTER, Martin; (217 pag.)WO2017/137334; (2017); A1;,
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. 2924-09-6, name is 5-Bromo-2-fluoroaniline, A new synthetic method of this compound is introduced below., Product Details of 2924-09-6

General procedure: A Schlenk tube was charged with Oxone (0.398 g, 0.648mmol) and trifloroacetic acid (0.099 mL, 1.296 mmol) in anhydrous dioxane (2 mL) under argon. To this mixture was added 2-fluoroaniline (0.06 g, 0.54 mmol), and the reaction mixture was heated to 90 C under argon until starting material was consumed. As the reaction progressed, the color turned from lightred to dark red. The mixture was then cooled to room temperature and washed with a saturated aqueous sodium bicarbonate.The mixture was extracted with EtOAc (2 × 20 mL) and the combined organic layers were dried over Na2SO4. After filtering andremoval of the solvent under reduced pressure in vacuo, theresidue was purified by silica gel (100-200 mesh) column chromatography(hexane-EtOAc, 9:1), to afford a pale-brown solid(65%) of 2-hydroxy-N-trifluoroacetanilides from 2-fluoroaniline(2a).

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Article; Venkateswarlu, Vunnam; Balgotra, Shilpi; Aravinda Kumar; Vishwakarma, Ram A.; Sawant, Sanghapal D.; Synlett; vol. 26; 9; (2015); p. 1258 – 1262;,
Bromide – Wikipedia,
bromide – Wiktionary

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. 2924-09-6, name is 5-Bromo-2-fluoroaniline, This compound has unique chemical properties. The synthetic route is as follows., name: 5-Bromo-2-fluoroaniline

Under an argon atmosphere, 5-bromo-2-fluoro stirring by addition of water (120mL) to the aniline (45.6g, 240mmol) and, after the addition of concentrated hydrochloric acid (120mL), cooled to -20 , and sodium nitrite ( 19.9g, was added dropwise an aqueous solution of 288mmol) and water (80mL). After stirring 20 minutes at -20 ,Adding an aqueous solution of potassium iodide (59.8g, 360mmol) and water (60mL), andIt was stirred for 30 minutes. After extraction with hexane, the organic layer was washed with saturated aqueous sodium hydrogen carbonate solution, sodium sulfite solution and dried over sodium sulfate, the solvent was evaporated under reduced pressure. The residue was purified by a silica gel column chromatographyPurified5-Bromo-2-fluoro-iodobenzene (54.6g, 181mmol)(Yield: 76%).

According to the analysis of related databases, 2924-09-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Idemitsu Kosan Corporation; Hayama, Tomoharu; Kawamura, Masahiro; Mizuki, Yumiko; Ito, Hirokazu; Haketa, Tasuku; (50 pag.)KR2016/18458; (2016); A;,
Bromide – Wikipedia,
bromide – Wiktionary

Some common heterocyclic compound, 2924-09-6, name is 5-Bromo-2-fluoroaniline, molecular formula is C6H5BrFN, 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. Product Details of 2924-09-6

To a solution of 5-bromo-2-fluoroaniline (5 g, 26.3 mmol) in DMF (30 mL) was added NCS (3.69 g, 27.6 mmol).The mixture was stirred at 60 C for 2 hr. The mixture was diluted with water, extracted with ethyl acetate twice. Then the organic layer was dried over magnesium sulfate, filtered and concentrated in vacuum. The residue was purified by CombiFlash, eluted with ethyl acetate in hexane (0-5%, 40 min), collected the desired fraction to afford the title compound (1 .2 g, 5.35 mmol, 20.32 % yield). 1 H NMR (400 MHz, DMSO-d6) delta 7.03 (dd, J = 10.8, 8.7 Hz, 1 H), 6.90 (dd, J = 8.8, 5.1 Hz, 1 H), 5.77 (s, 2H). LC-MS: [M+H]+ = 223.9,226.0,228.3.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2924-09-6, its application will become more common.

Reference:
Patent; NOVARTIS AG; DU-CUNY, Lei; XIAO, Qitao; XUN, Guoliang; ZHENG, Qiangang; (204 pag.)WO2018/234978; (2018); A1;,
Bromide – Wikipedia,
bromide – Wiktionary