Category: 57381-62-1

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 57381-62-1 as follows. SDS of cas: 57381-62-1

2-bromo-4-chloro-benzoic acid methyl ester (12.4 g, 50 mmol) in toluene (200 ml) was cooled to -70 ° C and trifluoroMethyltrimethylsilane (13 ml, 70 mmol). Tetrabutylammonium fluoride (IM, 2.5 ml) was added dropwise and the mixture was allowed to stand for 4 hoursHeated to room temperature, followed by stirring at room temperature for 10 hours. The reaction mixture was concentrated to give crude [l- (2-bromo-4-chloro-phenyl) -2,2,2-trifluoro-1-methoxy-ethoxy] -trimethyl-silane. The crude intermediate was dissolved in methanol (100 ml) and added6N HCl (100 ml). The mixture was maintained at 45-50 & lt; 0 & gt; C for 12 hours. The methanol was removed and the crude product was extracted with dichloromethane (200 ml)Extract. The combined DCM layers were washed with water (50 ml), NaHCO3 (50 ml), brine (50 ml) and dried over sodium sulfate. Removal of dissolvedThe crude product was purified by ISCO column chromatography using 1-2percent ethyl acetate in hexanes as solventTo give 1- (2-bromo-4-chloro-phenyl) -2,2,2-trifluoro-ethanone (10 g, 70percent).

According to the analysis of related databases, 57381-62-1, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Laixiken Pharmaceutical Co., Ltd.; A Luojiyasami·dewasajiayalayi; Jin Haihong; Shi Zhicai; A Xiaoke·tunuli; Wang Ying; Zhang Chengmin; (63 pag.)CN104045626; (2017); B;,
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Adding a certain compound to certain chemical reactions, such as: 57381-62-1, name is Methyl 2-bromo-4-chlorobenzoate, belongs to esters-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 57381-62-1, Safety of Methyl 2-bromo-4-chlorobenzoate

50 g (200 mmol) of methyl-2-bromo-4-chlorobenzoate was dissolved in 0.5 L of tetrahydrofuran (THF) under a nitrogen atmosphere, 50.2 g (220 mmol) of dibenzofuran-4-ylboronic acid and 4.63 g (4.01 mmol) of tetrakis(triphenylphosphine)palladium were added thereto, and the mixture was agitated. Then, 59.0 g (401 mmol) of potassium carbonate saturated in water was added thereto, and the obtained mixture was heated and refluxed at 80 °C for 18 hours. When the reaction was complete, water was added to the reaction solution, and the mixture was extracted with dichloromethane (DCM) and treated with anhydrous MgSO4 to remove moisture and then, filtered and concentrated under a reduced pressure. Then, a residue obtained therefrom was separated and purified through flash column chromatography, obtaining 56.5 g (80 percent) of the intermediate I-5. HRMS (70 eV, EI+): m/z calcd for C20H13ClO2S: 352.0325, found: 352.Elemental Analysis: C, 68 percent; H, 4 percent

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, Methyl 2-bromo-4-chlorobenzoate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Cheil Industries Inc.; LEE, Han-Ill; YU, Eun-Sun; KANG, Dong-Min; KANG, Eui-Su; MIN, Soo-Hyun; YANG, Yong-Tak; OH, Jae-Jin; RYU, Dong-Kyu; LEE, Sang-Shin; JANG, Yu-Na; JEONG, Soo-Young; JO, Young-Kyoung; HAN, Su-Jin; HONG, Jin-Seok; EP2952511; (2015); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 57381-62-1, name is Methyl 2-bromo-4-chlorobenzoate, belongs to esters-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 57381-62-1, name: Methyl 2-bromo-4-chlorobenzoate

In a 500 ml round-bottomed flask, 30 g (68.9 mmol) of the compound of formula C-1,17 g (68.2 mmol) of methyl 2-bromo-4-chlorobenzoate,1.6 g (1.38 mmol) of tetrakistriphenylphosphine palladium was added to 150 ml of tetrahydrofuran, mixed with 80 ml of an aqueous solution of 28.6 g (207 mmol) of potassium carbonate and refluxed for 24 hours. The impurities were removed using chloroform and water, and then anhydrous magnesium sulfate was added to remove moisture. The solution was filtered and then recrystallized using chloroform and ethanol to obtain 21.2 g (yield 65percent) of the formula C-2.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, Methyl 2-bromo-4-chlorobenzoate, and friends who are interested can also refer to it.

Reference:
Patent; LG Chemical Co.,Ltd; Kim, Su Yeon; Lee, Ho Yong; Jo, Sung Mi; (43 pag.)KR2016/2354; (2016); A;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Reference of 57381-62-1, 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. 57381-62-1, name is Methyl 2-bromo-4-chlorobenzoate, This compound has unique chemical properties. The synthetic route is as follows.

To a solution of methyl 2-bromo-4-chlorobenzoate (In-27, 5.0 g, 20.0 mmol) in MeOH (50 mL) was added N2H4.H20 (80percent, 50 mL). The resulting solution was heated at 60 ¡ãC for 1 h, until TLC show SM consumed. After concentration, the resulting solid was dissolved in EA (100 mL), washed with brine (2 x 30 mL), dried over Na2504 and concentrated to dryness to afford desired product 2-bromo-4-chlorobenzohydrazide Sc (2.8 g, 56percent). ?H NMR(300 MHz, DMSO-d6): oe 9.58 (s, 1H), 7.80 (d, J=1.8 Hz, 1H), 7.52 (dd, J8.1 Hz, J=2.1 Hz, 1H), 7.38 (d,J=8.1 Hz, 1H), 4.49 (s, 2H). LC-MS [M+Hj 251;

The chemical industry reduces the impact on the environment during synthesis Methyl 2-bromo-4-chlorobenzoate. I believe this compound will play a more active role in future production and life.

Reference:
Patent; ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI; HAJJAR, Roger; DEVITA, Robert; (68 pag.)WO2019/18718; (2019); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application of 57381-62-1, The chemical industry reduces the impact on the environment during synthesis 57381-62-1, name is Methyl 2-bromo-4-chlorobenzoate, I believe this compound will play a more active role in future production and life.

(4-Dibenzofuranyl) boronic acid ((4-dibenzofuranyl) boronic acid), 30 g (141.5 mmol), methyl-2-bromo-4-chlorobenzoate (methyl-2-bromo-5-chlorobenzoate), 37.1 g ( 148.6 mmol), tetrakistriphenylphosphine palladium 8.2 g (7.1 mmol) dissolved in toluene 550 ml was added to flask placed in a nitrogen atmosphere. Potassium carbonate (potassium carbonate) 104.2 g (707.51 mmol) was dissolved in 550 ml toluene, and the aqueous solution 353.8 ml was stirred under reflux for 12 hours. After completion of the reaction, the mixture was extracted with ethyl acetate, dried with magnesium sulfite (magnesium sulphate), filtered and the filtrate was concentrated under reduced pressure. The resulting mixture was purified by silica gel column chromatography using n-hexane / dichloromethane (7:3 volume ratio) to give the desired compound of intermediate (D) 38.2 g (80percent yield) as a white 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, Methyl 2-bromo-4-chlorobenzoate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; CHEIL INDUSTRIES INC.; JO, YOUNG KYOUNG; KANG, EUI SU; KIM, DONG YEONG; LUI, JIN HYUN; MIN, SOO HYUN; YANG, YONG TAK; OH, JAE JIN; YU, EUN SUN; LEE, HAN ILL; JUNG, HO KUK; (42 pag.)KR2015/45809; (2015); A;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics