Tag: M.W=200-300

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. 19752-55-7, name is 1-Bromo-3,5-dichlorobenzene belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Quality Control of 1-Bromo-3,5-dichlorobenzene

In the round bottom flask was charged with 1,3-dibromo-5-chlorobenzene 25g (92.47mmol) and phenoxazine 16.9g (92.47mmol) into a sodium t- butoxide 13.4g (138.7mmol) was added to 463ml toluene dissolved. Here Pd (dba)2 0.266g (0.462mmol) and tri-tert-butylphosphine was put 0.187g (0.924mmol) in turn and the mixture was stirred under reflux for 4 hours under a nitrogen atmosphere. After the reaction the organic layer was then extracted with ethyl acetate dry distilled over magnesium sulfate, filtered and the filtrate was concentrated under reduced pressure. The product n- hexane / dichloromethane (8: 2 by volume) to yield the silica gel column 25.7g (yield 85percent) of intermediate M-16 chromatography to yield the desired compound as a white solid.

The synthetic route of 19752-55-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Chei Industries Inc.; Ryu, Dong Wan; Heo, Dal Ho; Jung, Seong Hyeon; Hong, Jin Seok; Kim, Jun Seok; Yoo, Dong Kyu; Lee, Seung Jae; Lee, Han Il; Chang, Yu Na; Cho, Yeong Kyeong; Chae, Mi Yeong; (44 pag.)KR2016/8651; (2016); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

6579-54-0, name is 2,6-Dichlorobenzenesulfonyl chloride, belongs to chlorides-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. SDS of cas: 6579-54-0

Taking 245 mg 2,6-dichlorobenzenesulfonyl chloride dissolved into 20 ml anhydrous methanol, stirring 20 min, add m-phenylenediamine 450 mg and triethylamine 3 ml, in 70 C under stirring 12 h cooling, methanol, water, extracted with ethyl acetate three times, the combined organic phase, water washing, water-free MgSO4Drying, evaporating the solvent, purification with silica gel column chromatography, eluting agent volume ratio: AcOEt: petroleum ether=1:4, to obtain white solid N,N’-bis(2,6-dichlorobenzenesulfonyl)m-phenylenediamine 515 mg, yield 98%.

The synthetic route of 6579-54-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Jishou University; Xiao Zhuping; Ni Weiwei; Fu Zijuan; Yi Juan; Zhou Tianli; (21 pag.)CN109096156; (2018); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 309721-44-6, name is 2-Bromo-1-chloro-3-fluorobenzene, belongs to chlorides-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 309721-44-6, Quality Control of 2-Bromo-1-chloro-3-fluorobenzene

To a solution of 2-bromo-l-chloro-3-fluorobenzene (6.0 g, 29 mmol) in tetrahydrofuran (30 mL) at -70 C was added dropwise lithium diisopropylamide (2 M in tetrahydrofuran/n-heptane, 22 mL, 43 mmol). The resulting solution was stirred at -70 C for 0.5 hour. Then N, N – dimethylformamide (4.2 g, 57 mmol) was added slowly, and stirring was continued at -70 C for another 0.5 hour. On completion of the reaction by TLC [petroleum ether: ethyl acetate = 10: 1, Rf=0.6], the reaction was quenched with saturated aqueous ammonium chloride (2 mL) at 0 C and extracted with acetate ethyl (3 chi 20 mL). The combined organic extracts were concentrated to give compound A-49 (4.0 g, 58% yield) as a yellow solid. -NMR (CD3OD, 400 MHz): delta 7.64-7.57 (m, 1H), 7.21-7.17 (m, 1H), 6.02 (s, 1H).

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Patent; FORUM PHARMACEUTICALS, INC.; ACHARYA, Raksha; BURNETT, Duane, A.; BURSAVICH, Matthew, Gregory; COOK, Andrew, Simon; HARRISON, Bryce, Alden; MCRINER, Andrew, J.; (127 pag.)WO2016/201096; (2016); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 6579-54-0, name is 2,6-Dichlorobenzenesulfonyl chloride, belongs to chlorides-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 6579-54-0, Safety of 2,6-Dichlorobenzenesulfonyl chloride

General procedure: To a solution of amine (1 mmol) in 3 mL of pyridine at 0C was slowly added the appropriate benzenesulfonyl chloride (1.1 mmol, 1.1 equiv). The mixture was stirred for 12 h at 25C. The mixture was quenched with 2N HCl, extracted with EtOAc, dried over anhydrous MgSO4, and concentrated in vacuum. The crude product was purified by recrystallization and/or chromatography as noted below.

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Article; Kril, Liliia M.; Vilchez, Valery; Jiang, Jieyun; Turcios, Lilia; Chen, Changguo; Sviripa, Vitaliy M.; Zhang, Wen; Liu, Chunming; Spear, Brett; Watt, David S.; Gedaly, Roberto; Bioorganic and Medicinal Chemistry Letters; vol. 25; 18; (2015); p. 3897 – 3899;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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 1000572-93-9 as follows. SDS of cas: 1000572-93-9

A stirred mixture of 3,4-dichloro-5-fluorophenyl bromide (1.38 g, 5.66 mmol) and magnesium turnings (0.145 g, 5.94 mmol) in THF (8 mL) was heated at reflux under nitrogen for 30 minutes, then cooled to 0 C. To the reaction mixture was added a solution of 2-formyl-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl ester (0.682 g, 2.38 mmol) in THF (2 mL) dropwise over 15 minutes. The cold reaction mixture was stirred for one hour, then quenched by the addition of saturated aqueous NH4Cl (20 mL) and extracted with EtOAc. The combined organic extracts were washed with brine, dried (MgSO4), filtered and concentrated in vacuo to a yellow oil (1.7 g). Purification by chromatography (silica, 0 to 20% EtOAc in hexanes) gave 2-[(3,4-dichloro-5-fluoro-phenyl)-hydroxy-methyl]-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl ester (0.571 g, 1.41 mmol, 50%) as a white solid.

According to the analysis of related databases, 1000572-93-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Roche Palo Alto LLC; US2008/146607; (2008); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 220227-21-4, name is 2,4,5-Trifluorobenzene-1-sulfonyl chloride, belongs to chlorides-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 220227-21-4, category: chlorides-buliding-blocks

[00373] Step A: To a solution of sodium sulfite (153 g, 1214 mmol) in water (1000 mL) was added a solution of 2,4,5-trifluorobenzene-l-sulfonyl chloride (40 g, 173 mmol) in dioxane (300 mL) dropwise. After the complete addition of sulfonyl chloride, the reaction was basified to about pH 14 by the addition of 1 N NaOH, and the reaction mixture was stirred overnight. The reaction mixture was cooled on an ice bath and acidified using 100 mL concentrated H2SO4 to about pH 1. The mixture was extracted with EtOAc and CH2CI2 and the combined organic layers were dried over a2S04, filtered and concentrated to afford 2,4,5-trifluorobenzenesulfinic acid (34 g, 100%).

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, 2,4,5-Trifluorobenzene-1-sulfonyl chloride, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ARRAY BIOPHARMA INC.; AICHER, Thomas Daniel; BENCSIK, Josef R.; BOYD, Steven Armen; CONDROSKI, Kevin Ronald; FELL, Jay Bradford; FISCHER, John P.; HINKLIN, Ronald Jay; PRATT, Scott Alan; SINGH, Ajay; TURNER, Timothy M.; WO2012/37393; (2012); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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 6579-54-0 as follows. Product Details of 6579-54-0

C. 3-(2,6-dichlorophenylsulfonylamino)-4-(2-pyridyl)-5-(3-(4-fluorophenoxy)benzylthio)-(1H)-pyrazole 3-Amino-4-(2-pyridyl)-5-(3-(4-fluorophenoxy)benzylthio)-(1H)-pyrazole (0.39 g, 0.99 mmol) was dissolved in 5 ml of pyridine. Commercial 2,6-dichlorobenzenesulfonyl chloride (0.26 g, 1.04 mmol) was added and the red solution was stirred overnight at room temperature. The reaction mixture was poured into 50 ml of water and was extracted twice with 100 ml portions of ethyl acetate. The organic layers were washed with water and brine, combined, dried over MgSO4 and concentrated. The crude product was slurried in cold ethyl acetate and the solid was filtered off and washed with small portions of cold ethyl acetate and cold diethyl ether and dried under vacuum to afford 0.32 g (53% yield) of the final compound. FD-MS: (M+)600 mp. 164-5 C. Elemental analysis: Calc. C 53.91% H 3.18% N 9.31% S 10.66% Cl 11.79% Found C 54.19% H 3.20% N 9.37% S 9.80% Cl 11.79%

According to the analysis of related databases, 6579-54-0, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Eli Lilly and Company; US5972972; (1999); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 38762-41-3, name is 4-Bromo-2-chloroaniline, belongs to chlorides-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 38762-41-3, HPLC of Formula: C6H5BrClN

To a stirred solution of 4-bromo-2-chloroaniline (1.8 g, 8.82 mmol) in dry THF (20 mL) was added NaHMDS (11.5 mL 69.68 mmol) followed by Etl (0.9 ml, 2.95 mmol) at RT. The reaction mixture was stirred at RT for lh. The reaction mixture was quenched with aqueous NH4Cl solution and extracted with EtOAc (2X50 mL), dried over Na2S04 and concentrated under reduced pressure to afford the title compound (1.5 g,75%), LCMS: m/z = 264.0[M+2]+.

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

Reference:
Patent; AURIGENE DISCOVERY TECHNOLOGIES LIMITED; CHIKKANNA, Dinesh; KHAIRNAR, Vinayak V.; RAMACHANDRA, Muralidhara; SATYAM, Leena Khare; (139 pag.)WO2019/142126; (2019); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 203302-92-5, name is 3-Bromo-2-chloro-6-fluorotoluene, A new synthetic method of this compound is introduced below., SDS of cas: 203302-92-5

N-bromosuccinimide (“NBS”) (6.42 g) and benzoyl peroxide (catalytic amount) in carbon tetrachloride (40 ml) was heated to reflux. A 500 watt tungsten halogen lamp was used to initiate the reaction. The reaction mixture was heated to reflux and irradiated for 30 minutes. The reaction mixture was allowed to cool to ambient temperature and then filtered. The filtrate was concentrated to give a colorless oil which solidified on standing to give l-bromo-3-bromomethyl-2-chloro-4-fluoro-benzene as an off-white solid (10.7 g). IH-NMR (400 MHz, CDCl3): 7.58 (dd, IH), 6.94 (t, IH), 4.64 (d, 2H) ppm.

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; SYNGENTA LIMITED; WO2009/63180; (2009); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 20816-79-9, 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. 20816-79-9, name is 1-Bromo-8-chloronaphthalene, This compound has unique chemical properties. The synthetic route is as follows.

Under a nitrogen atmosphere,the intermediate A-BE, 1-bromo-8-chloronaphthalene, and potassium carbonate were mixed at a molar ratio of 1: (1.0-1.2):3.0 under a nitrogen atmosphere, and added to the catalyst containing palladium acetate and tri-tert-butylphosphine tetrafluoroboratein toluene/water,Under reflux with nitrogen for 12-16h, cooled down, the reaction solution is allowed to stand for liquid separation, dried, and purified by column chromatography to obtain intermediate M-1.

The chemical industry reduces the impact on the environment during synthesis 1-Bromo-8-chloronaphthalene. I believe this compound will play a more active role in future production and life.

Reference:
Patent; CECEP Wanrun Co., Ltd.; Li Qing; Li Zishu; Shi Yu; Meng Fanmin; Zhou Yinbo; Hu Baohua; (17 pag.)CN108586319; (2018); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics