Category: 55289-36-6

Application of 55289-36-6, 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. 55289-36-6, name is 3-Bromo-2-methylaniline belongs to bromides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Intermediate 27-1Preparation of 1-(3-bromo-2-methylphenyl)piperidin-2-one A solution of 3-bromo-2-methylaniline (1 g, 5.37 mmol) in DCM (15 mL) was treated with TEA (0.749 mL, 5.37 mmol) and then dropwise with a solution of 5-bromopentanoyl chloride (1.072 g, 5.37 mmol) in DCM (4 mL). The mixture was stirred at rt for 30 min, then was diluted with DCM, washed with water and brine, and dried and concentrated. The residue was dissolved in THF (100 mL) and added to a suspension of sodium hydride (60% oil dispersion, pre-washed with hexane, 0.430 g, 10.75 mmol) in THF (50 mL). The resulting mixture was stirred overnight at rt. The mixture was concentrated and the residue was acidified with 1 M hydrochloric acid. The mixture was extracted with DCM and the organic phase was washed with water, dried and concentrated to give 1-(3-bromo-2-methylphenyl)piperidin-2-one as a tan oil (1.4 g, 97%). 1H NMR (400 MHz, chloroform-d) delta 7.49-7.54 (1H, m), 7.07-7.13 (2H, m), 3.38-3.60 (2H, m), 2.54-2.59 (2H, m), 2.26 (3H, s), 1.91-2.02 (4H, m). Mass spectrum m/z 268, 270 (M+H)+.

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, 3-Bromo-2-methylaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Bristol-Myers Squibb Company; US2010/160303; (2010); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Electric Literature of 55289-36-6, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 55289-36-6 as follows.

Reference Production Example 8(0597) A mixture of 25.0 g of 1-bromo-2-methyl-3-aminobenzene, 60.0 g of triphosgene, and 400 ml of toluene was stirred with heating under reflux for 3 hours. The reaction mixture allowed to cool was concentrated under reduced pressure to obtain 30.3 g of 1-bromo-3-isocyanato-2-methylbenzene (hereinafter referred to as 8A). (0598) 1H-NMR (CDCl3) delta (ppm): 2.42 (3H, s), 7.00 (1H, dt, J=0.5, 8.0 Hz), 7.05 (1H, dd, J=1.7, 8.0 Hz), 7.39 (1H, dd, 1.5, 7.7 Hz).

According to the analysis of related databases, 55289-36-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; SUMITOMO CHEMICAL COMPANY, LIMITED; SHIODA, Takayuki; ARIMORI, Sadayuki; (191 pag.)US2016/157489; (2016); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Application of 55289-36-6,Some common heterocyclic compound, 55289-36-6, name is 3-Bromo-2-methylaniline, molecular formula is C7H8BrN, 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 mixture of 3-Bromo-2-methyl-phenylamine (15.6 g, 0.084 mol), NH2OH*H2SO4 (71.25 g, 0.5 mol), conc. HCl (8.8 mL) in H2O (90 mL) is slowly added to a solution of chloral hydrate (15.2 g, 0.09 mol), Na2SO4 (71.25 g, 0.44 mol) in H2O (255 mL) then stirred at 35 C. for 1 h, 52 C. for 1.5 h, 75 C. for 1 h. After the reaction, the mixture is filtered and the solid is dried under vacuum to give product. Yield: 18 g (83%)

The synthetic route of 55289-36-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Boehringer Ingelheim International GmbH; ENGELHARDT, Harald; GIANNI, Davide; MANTOULIDIS, Andreas; SMETHURST, Christian; US2014/296229; (2014); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Application of 55289-36-6, 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. 55289-36-6, name is 3-Bromo-2-methylaniline belongs to bromides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

To a flask containing aqueous sulfuric acid (14%, 260 mL), 3-bromo-2-methylaniline (5.00 mL, 40.6 mmol) was added. The mixture was brought to reflux, and a solution of sodium nitrite (3.08 g, 44.6 mmol) in water (minimum amount required to dissolve) was added dropwise over the course of 1 hour. The mixture was refluxed an additional 30 minutes, cooled to room temperature, and extracted three times with chloroform. The combined chloroform layeres were extracted three times with aqueous sodium hydroxide (1 M). The aqueous layers were acidified with concentrated hydrochloric acid and extracted three times with chloroform. These three chloroform extracts were combined, dried over magnesium sulfate, filtered, and concentrated to give 3-bromo-2-methylphenol (10-1, 5.63 g) as a brown solid.

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, 3-Bromo-2-methylaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Aviara Pharmaceuticals, Inc.; Biediger, Ronald J.; Benish, Michele A.; Hardy, Lindsay Bonner; Boyd, Vincent A.; Market, Robert V.; Thrash, Thomas P.; Young, Brandon M.; (83 pag.)US2018/312523; (2018); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of 55289-36-6, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 55289-36-6 as follows.

A mixture of 3-bromo-2-methylaniline (10 mL, 60.52 mmol), chloral hydrate (14.86 g, 89.86 mmol) and anhydrous Na2S04 (94.56 g, 665.74 mmol) in hydrochloric acid (6.4 mL, 21 1.24 mmol) and H2O (700 mL) was stirred vigorously at room temperature overnight. To the resulting mixture, hydroxylamine hydrochloride (5.86 g, 84.26 mmol) was added and the mixture was heated to reflux overnight. The reaction mixture was ice cooled, and the resulting precipitate was collected by vacuum filtration and washed copiously with H2O and dried under suction. The precipitate was re-dissolved in EtOAc (-500 mL) and washed with H2O (300 mL) and brine (300 mL) then dried over MgS04. The resulting filtrate was removed in vacuo to give 6-bromo-7-methyl-indoline-2,3-dione as a dark brown solid in quantitative yield, which was used directly in the next step without further purification. LC-MS 238.5/240.5 [M+H]+; RT 1.84 min

According to the analysis of related databases, 55289-36-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; REDX PHARMA PLC; STOKES, Neil; (163 pag.)WO2017/46603; (2017); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Reference of 55289-36-6,Some common heterocyclic compound, 55289-36-6, name is 3-Bromo-2-methylaniline, molecular formula is C7H8BrN, 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.

Under nitrogen atmosphere, 3-bromo-2-methylaniline (5.01g, 26.9 mmol) was dissolved in DCM (100 mL). To this solution, cooled with ice bath, TEA (7.5 mL, 53.9 mmol) and 4-tert-butylbenzoyl chloride (5.3 g, 26.9 mmol) were added dropwise and stirred at 0 C for 4 h. The reaction mixture was diluted with DCM (100 mL), washed with water (2×30 mL), 1N hydrochloric acid solution (30 mL), saturated sodium hydrogen carbonate solution (30 mL) and brine (30 mL), then the organic layer was dried over sodium sulfate, filtered and concentrated. The crude material was suspended in hexane, then the precipitate was collected by filtration, washed with hexane then dried to afford N-(3-bromo-2-methylphenyl)-4-(tert-butyl)benzamide (9.0 g). 1H NMR (400 MHz, DMSO-d6) delta 10.06 (s, 1H), 7.92 (d, J = 8.4 Hz, 2H), 7.54 (m, 3H), 7.33 (d, J = 7.7 Hz, 1H), 7.18 (t, J = 8.0 Hz, 1H), 2.27 (s, 3H), 1.32 (s, 9H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3-Bromo-2-methylaniline, its application will become more common.

Reference:
Patent; Carna Biosciences, Inc.; KAWAHATA, Wataru; ASAMI, Tokiko; SAWA, Masaaki; ASAMITSU, Yuko; IRIE, Takayuki; MIYAKE, Takahiro; KIYOI, Takao; EP2824099; (2015); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Application of 55289-36-6, These common heterocyclic compound, 55289-36-6, name is 3-Bromo-2-methylaniline, 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.

To a solution of 3-bromo-2-methylaniline (5 g,27 mmol) in chloroform (1 mL) was added acetic anhydride (5 g, 27 mmol) at 0 0C and the mixture was stirred at room temperature for 1 h. Potassium acetate (0.75 g, 7.8 mmol) and isoamyl nitrite (0.78 g, 58 mmol) were added and the reaction mixture was refluxed for 18 h. The volatiles were removed under reduced pressure and water (0.65 mL) was added. The mixture was concentrated, diluted with concentrated hydrochloride acid (1 mL) and heated at 50 0C for 2 h. After being cooled to room temperature, aqueous sodium hydroxide solution (50 %) was added until pEta=10. The aqueous mixture was extracted with ethyl acetate (100 mL><3). The combined organic layer was washed with brine (150 mL), dried over anhydrous sodium sulfate, filtered, evaporated and purified on silica gel column (3 % ethyl acetate in petroleum ether) to give the desired product (2.69 g, 34 % yield) as a solid. MS (ESI): m/z 197.0 [M+l]+. The synthetic route of 55289-36-6 has been constantly updated, and we look forward to future research findings. Reference:
Patent; SIGNAL PHARMACEUTICALS, LLC; ELSNER, Jan; HARRIS, Roy, L.; LEE, Branden; MORTENSEN, Deborah; PACKARD, Garrick; PAPA, Patrick; PERRIN-NINKOVIC, Sophie; RIGGS, Jennifer; SANKAR, Sabita; SAPIENZA, John; SHEVLIN, Graziella; TEHRANI, Lida; XU, Weiming; ZHAO, Jingjing; PARNES, Jason; MADAKAMUTIL Loui; FULTZ Kimberly; NARLA, Rama K.; WO2010/62571; (2010); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Adding a certain compound to certain chemical reactions, such as: 55289-36-6, name is 3-Bromo-2-methylaniline, belongs to bromides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 55289-36-6, SDS of cas: 55289-36-6

A suspension of 8-fluoro-lH-benzo[d][l,3]oxazine-2,4-dione (3.00 g, 16.6 mmol) in xylenes (50 mL) was treated with 3-bromo-2-methylaniline (3.08 g, 16.6 mmol) and heated to reflux. After 6 hours, the mixture was allowed to cool to room temperature overnight. The resulting suspension was diluted with hexanes and the precipitate was collected by filtration, rinsed with hexanes and air-dried to provide 2-amino-N-(3-bromo- 2-methylphenyl)-3-fluorobenzamide as a white solid (4.50 g, 84% yield). Mass spectrum m/z 323, 325 (M+H)+. 1H NMR (400 MHz, chloroform-d) delta 7.69 (d, J=7.9 Hz, 1H), 7.65 (br. s., 1H), 7.50-7.46 (m, 1H), 7.32 (d, J=8.1 Hz, 1H), 7.19-7.1 1 (m, 2H), 6.73-6.64 (m, 1H), 5.69 (br. s., 2H), 2.44 (s, 3H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 3-Bromo-2-methylaniline, and friends who are interested can also refer to it.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; KO, Soo Sung; BATT, Douglas A.; BERTRAND, Myra Beaudoin; DELUCCA, George V.; LANGEVINE, Charles M.; LIU, Qingjie; SRIVASTAVA, Anurag S.; WATTERSON, Scott Hunter; WO2014/210087; (2014); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 55289-36-6, A common heterocyclic compound, 55289-36-6, name is 3-Bromo-2-methylaniline, molecular formula is C7H8BrN, 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.

Intermediate 20-1Preparation of N-(3-bromo-2-methylphenyl)-1H-indazol-3-amine Step 1 A mixture of 3-bromo-2-methylaniline (1.66 mL, 13.4 mmol), 2-fluorobenzoic acid (1.883 g, 13.4 mmol), and HOAT (2.74 g, 20.2 mmol) in EtOAc (60 mL) was treated with DIEA (4.7 mL, 26.9 mmol) and EDC (5.15 g, 26.9 mmol) and the mixture was stirred at rt. After 19 h, the mixture was diluted with EtOAc and washed with water, 1 M hydrochloric acid (twice), NaHCO3 (aq) (twice) and brine, dried and concentrated to provide N-(3-bromo-2-methylphenyl)-2-fluorobenzamide as tan fluffy needles (4.11 g, 99%). 1H NMR (400 MHz, chloroform-d) delta 8.34-8.50 (1 H, m), 8.20 (1H, td, J=7.9, 1.8 Hz), 7.96 (1H, d, J=8.1 Hz), 7.50-7.59 (1H, m), 7.44 (1H, dd, J=8.0, 0.8 Hz), 7.30-7.37 (1H, m), 7.21 (1H, dd, J=12.8, 7.9 Hz), 7.12 (1H, t, J=8.0 Hz), 2.45 (3H, s). Mass spectrum m/z 308, 310 (M+H)+.

The synthetic route of 55289-36-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Bristol-Myers Squibb Company; US2010/160303; (2010); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Application of 55289-36-6, A common heterocyclic compound, 55289-36-6, name is 3-Bromo-2-methylaniline, molecular formula is C7H8BrN, 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.

Intermediate 1A: 2-Amino-N-(3-bromo-2-methylphenyl)-3-fluorobenzamide Method 1: A solution of 8-fluoro-1H-benzo[d][1,3]oxazine-2,4-dione (2.00 g, 11.04 mmol) and 3-bromo-2-methylaniline (4.11 g, 22.08 mmol) in dioxane (20 mL) in sealed reaction vessels was heated at 110 C. for 4 days. The cooled mixture was treated with 10% aqueous K2CO3 and stirred at room temperature for 30 min. The mixture was extracted with DCM 3 times, and the combined organic phases were washed with water, dried and concentrated. The residue was triturated with ether to give a gray solid (2.50 g). The mother liquor was concentrated and the residue was again triturated with ether to give a gray solid (230 mg). The two solids were combined to provide 2-amino-N-(3-bromo-2-methylphenyl)-3-fluorobenzamide as a gray solid (2.73 g, 78% yield). Mass spectrum m/z 323, 325 (M+H)+.; Method 2. A suspension of 8-fluoro-1H-benzo[d][1,3]oxazine-2,4-dione (3.00 g, 16.6 mmol) in xylenes (50 mL) was treated with 3-bromo-2-methylaniline (3.08 g, 16.6 mmol) and heated to reflux. After 6 h the mixture was allowed to cool to room temperature overnight. The resulting suspension was diluted with hexanes and the precipitate was collected by filtration, rinsed with hexanes and air-dried to provide 2-amino-N-(3-bromo-2-methylphenyl)-3-fluorobenzamide as a white solid (4.50 g, 84% yield). 1H NMR (400 MHz, chloroform-d) delta 7.69 (d, J=7.9 Hz, 1H), 7.65 (br. s., 1H), 7.50-7.46 (m, 1H), 7.32 (d, J=8.1 Hz, 1H), 7.19-7.11 (m, 2H), 6.73-6.64 (m, 1H), 5.69 (br. s., 2H), 2.44 (s, 3H).

The synthetic route of 55289-36-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Batt, Douglas G.; Bertrand, Myra Beaudoin; Delucca, George; Galella, Michael A.; Ko, Soo Sung; Langevine, Charles M.; Liu, Qingjie; Shi, Qing; Srivastava, Anurag S.; Tino, Joseph A.; Watterson, Scott Hunter; US2014/378475; (2014); A1;,
Bromide – Wikipedia,
bromide – Wiktionary