Month: September 2021

Reference of 883499-24-9, 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. 883499-24-9, name is 1-Bromo-2-chloro-3-fluorobenzene, This compound has unique chemical properties. The synthetic route is as follows.

5.3) 1-Benzylsulfanyl-3-bromo-2-chloro-benzene (intermediate 16): To stirred phenyl-methanethiol (14.8 g, 119,36 mmol) in 175 ml DMF was added Cs2CO3 (38.89 g, 119.36 mmol) under argon. After 10 min 1-bromo-2-chloro-3-fluoro- benzene (25 g, 119.36 mmol) in 25 ml DMF was added and stirring was continued overnight at RT and then 3 h at 800C. After cooling the mixture was diluted with ethyl acetate/water and washed subsequently with 1 N HCI and brine. The organic layer was dried with MgSO4, filtered and evaporated. Purification by chromatography on silica gel yielded 22 g (59 %) as an amorphous, colourless solid.

The chemical industry reduces the impact on the environment during synthesis 1-Bromo-2-chloro-3-fluorobenzene. I believe this compound will play a more active role in future production and life.

Reference:
Patent; SANOFI-AVENTIS; WO2009/103440; (2009); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of 63624-28-2, 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. 63624-28-2, name is 2,4-Dimethoxybenzene-1-sulfonyl chloride belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Example 24:Methyl 3-(5-(4-(2,4-dimethoxyphenylsulfonamido)phenyl)thiazol-2-yl) propanoate The compound of example 5 (100 mg) was dissolved in methylene chloride (2 mL) to which pyridine (0.061 mL) was added and the reaction mixture was stirred for 5 min. To this reaction mixture, 2,4-dimethoxybenzene-1 -sulfonyl chloride (0.135 g) was added and the reaction mixture was stirred for 16 h. Water was added into the reaction mixture and the reaction mixture was neutralized with dilute hydrochloric acid. The organic layer was washed with water and dried over anhydrous Na2S04. The solvent was evaporated to obtain an oil, which was purified by column chromatography (silicagel, EtOAc in chloroform) to obtain a solid, which was crystallized using EtOAc in petroleum ether to afford the title compound. Yield: 153 (86 %); 1H NMR (DMSO-d6, 300MHz): delta 10.07 (s, 1 H), 7.88 (s, 1 H), 7.71 (d, 1 H), 7.44 (d, 2H), 7.12 (d, 2H), 6.63 (d, 1 H), 6.57 (dd, 1 H), 3.86 (s, 3H), 3.78 (s, 3H), 3.59 (s, 3H), 3.22 (t, 2H), 2.79 (t, 2H); MS: m/z 463 (M+1 ).

The synthetic route of 2,4-Dimethoxybenzene-1-sulfonyl chloride has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PIRAMAL LIFE SCIENCES LIMITED; SHARMA, Rajiv; KADAM, Kishorkumar Shivajirao; JADHAV, Ravindra Dnyandev; KANDRE, Shivaji Sadashiv; GUPTE, Amol; WO2012/29032; (2012); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 26487-67-2, 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. 26487-67-2, name is 1-(2-Chloroethyl)azepane hydrochloride, This compound has unique chemical properties. The synthetic route is as follows.

General procedure: Commercially available 5-chloro benzoxazoles or benzothiazoles(5 mmol) and K2CO3 (15 mmol) were added to 50 mL of DMF.The mixture was heated at 60 C and 1-(2-chloroethyl)hexahydro-1H-azepine hydrochloride (6.5 mmol) was added. The mixture was maintained at 60 C under stirring for 3 h, then was cooled to room temperature, poured into water, and extracted with diethyl ether(3 50 mL). The organic layer was washed with brine, dried overan hydrous Na2SO4 and evaporated under reduced pressure to give are sidue, which was purified by flash column chromatography oversilica gel using ethyl acetate/methanol 8:2 v/v as eluent. Immediately after solvent evaporation, free bases were converted into hydrochlorides by dissolving the corresponding amine in diethyl ether and treating with a 1.25MHCl ethanol solution (pH 1e2). The precipitate was filtered off, washed with diethyl ether, and dried under nitrogen. The following compounds were obtained using this procedure:

The chemical industry reduces the impact on the environment during synthesis 1-(2-Chloroethyl)azepane hydrochloride. I believe this compound will play a more active role in future production and life.

Reference:
Article; Romeo, Giuseppe; Prezzavento, Orazio; Intagliata, Sebastiano; Pittala, Valeria; Modica, Maria N.; Marrazzo, Agostino; Turnaturi, Rita; Parenti, Carmela; Chiechio, Santina; Arena, Emanuela; Campisi, Agata; Sposito, Giovanni; Salerno, Loredana; European Journal of Medicinal Chemistry; vol. 174; (2019); p. 226 – 235;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 2732-80-1, name is 2-Bromo-1-chloro-4-methoxybenzene, 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 2732-80-1, name: 2-Bromo-1-chloro-4-methoxybenzene

4-Chloro-3-(4-fluorophenoxy)phenol; 2-Bromo-1-chloro-4-methoxybenzene (200 mg, 0.9 mmol), cesium carbonate (588 mg, 1.8 mmol), 4-fluorophenol (202 mg, 1.8 mmol), CuI (17 mg, 0.09 mmol) and N-methylpyrrolidine (1 mL) were sealed in a microwave vessel and heated in a microwave at 200 C. for 1800 s. The crude reaction mixture was purified by chromatography on silica gel. Elution with 10:90 ethyl acetate:heptane with a gradient to 30:70 ethyl acetate:heptane afforded 1-chloro-2-(4-fluorophenoxy)-4-methoxybenzene (112 mg, 0.44 mmol, 49%). 1-Chloro-2-(4-fluorophenoxy)-4-methoxybenzene (110 mg, 0.44 mmol) prepared above, was dissolved in DCM (5.00 mL) and stirred under argon at -78 C. Boron tribromide (1.0M in DCM, 2.20 mL) was then added and the reaction stirred at -78 C. for 1 h. The reaction was allowed to warm to ambient temperature overnight, quenched with saturated Na2CO3 (aq) and then the aqueous and organic layers were separated. The solvent was removed in vacuo and the crude product was purified by chromatography on silica gel. Elution with 2:98 ethyl acetate:heptane with a gradient to 20:80 ethyl acetate:heptane afforded 4-chloro-3-(4-fluorophenoxy)phenol (92 mg, 0.38 mmol, 87%). M.S. (ESI) (m/z): 237, 239 [M-H]-

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; N.V. Organon; US2007/185156; (2007); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 2533-69-9, 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. 2533-69-9, name is Methyl 2,2,2-trichloroacetimidate belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Example 7; Synthesis of Compounds According to Formula (4); [00528] 5-bromo-2-(trichloromethyl)-lH-benzimidazole 2; To a solution of 4- bromo-o-phenylenediamine 1 (2.52Og, 13.5 mmol) in acetic acid (35mL) cooled to 0 0C was added methyl trichloroacetimidate (2.64Og, 15 mmol) under N2 atmosphere and resulting reaction mixture was stirred at room temperature for 3h. Diluted with water (200 mL) and resulting precipitate was filtered , washed with water (100 mL), dried in vacuum oven at 40 0C to give 5-bromo-2-(trichloromethyl)-lH-benzimidazole (4.1g, 97%). 1H NMR (300 MHz, DMSOd6) : 57.48 (d, J= 6.0 Hz, 1 H), 7.63 (d, J= 6.0 Hz, 1 H), 7.88 (s, 1 H); LCMS mlz 315 (M + H+), ELSD 100%. Reference: Louvet, P.; Lallement, G.; Pernot-Marino, L; Luu- Duc, C; Blanchet, G. Eur. J.Med.Chem. 1993, 28, 71-75.

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 2,2,2-trichloroacetimidate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; CHEMBRIDGE RESEARCH LABORATORIES, INC.; WO2007/56155; (2007); 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 63624-28-2 as follows. Recommanded Product: 2,4-Dimethoxybenzene-1-sulfonyl chloride

General procedure: A mixture of norfloxacin (a) or ciprofloxacin (b) (1 mmol) (refPreviewPlaceHolderScheme 1) and K2CO3 (152 mg, 1.1 mmol) was stirred in acetone (20 mL) at room temperature for 20 min. To the resulted mixture, the appropriate arenesulfonyl chloride (1.2 mmol) in acetone (5 mL) was added dropwise over a period of 20 min. The reaction mixture was further stirred at room temperature for 24 h. The separated solid was then filtered, washed with cold water, dried and crystallized from the appropriate solvent.

According to the analysis of related databases, 63624-28-2, the application of this compound in the production field has become more and more popular.

Reference:
Article; Abdel-Aziz, Alaa A.-M.; Asiri, Yousif A.; Al-Agamy, Mohamed H.M.; European Journal of Medicinal Chemistry; vol. 46; 11; (2011); p. 5487 – 5497;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 1996-30-1, 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. 1996-30-1, name is 3-Bromo-4-fluorochlorobenzene, This compound has unique chemical properties. The synthetic route is as follows.

j0108j A solution of 2-bromo-4-chloro-1-fluorobenzene (175 .iL, 1.377 mmol) in THF (4.59 mL) at -78 C was treated with n-BuLi (2.6 M, 741 jiL, 1.928 mmol) and the reaction mixture was stirred for 30 mm. To this was added tert-butyl 4- (methoxy(methyl)carbamoyl)piperidine-1-carboxylate (250 mg, 0.918 mmol) in one portion. The cooling bath was removed and the resulting reaction mixture was allowed to warm to rt and stirred for 1.5 h. Purification by automated flash silica gel chromatography using 10% EtOAc in hexanes afforded tert-butyl 4-(5-chloro-2-fluorobenzoyl)piperidine-1-carboxylate (287.9 mg, 92%) as a yellow oil. ESI-MS mlz [M+Na]+ 364.20.

The chemical industry reduces the impact on the environment during synthesis 3-Bromo-4-fluorochlorobenzene. I believe this compound will play a more active role in future production and life.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; ADAMS, Mark E.; BROWN, Jason W.; HITCHCOCK, Stephen; HOPKINS, Maria; KIKUCHI, Shota; LAM, Betty; MONENSCHEIN, Holger; REICHARD, Holly; SUN, Huikai; WO2015/123533; (2015); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electric Literature of 19230-27-4, A common heterocyclic compound, 19230-27-4, name is 1,3-Dibromo-2-chlorobenzene, molecular formula is C6H3Br2Cl, 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 stirred mixture of (2-chloro-3 -(4,4,5,5 -tetramethyl- 1,3 ,2-dioxaborolan-2-yl)phenyl)methanol (22.4 g, 83.3 mmol), 1,3-dibromo-2-chlorobenzene (33.8 g, 125 mmol), potassiumcarbonate (27.6 g, 200 mmol), and [1,1?-bis(diphenylphosphino)ferrocenejdichloropalladium(II) (1.83 g,2.50 mmol) in 1,4-dioxane (150 mL) and water (40 mL) was heated to 115 C in a heating block. After90 mm, the resulting mixture was allowed to cool to room temperature and was filtered through celite.Ethyl acetate (500 mL) was added, and the organic layer was washed with a mixture of water and brine(1:1 v:v, 300 mL), was dried over anhydrous sodium sulfate, was filtered, and was concentrated under

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; GILEAD SCIENCES, INC.; AKTOUDIANAKIS, Evangelos; APPLEBY, Todd; CHO, Aesop; DU, Zhimin; GRAUPE, Michael; GUERRERO, Juan A.; JABRI, Salman Y.; LAD, Lateshkumar Thakorlal; MACHICAO TELLO, Paulo A.; MEDLEY, Jonathan William; METOBO, Samuel E.; MUKHERJEE, Prasenjit Kumar; NADUTHAMBI, Devan; NOTTE, Gregory; PARKHILL, Eric Q.; PHILLIPS, Barton W.; SIMONOVICH, Scott Preston; SQUIRES, Neil H.; VENKATARAMANI, Chandrasekar; WANG, Peiyuan; WATKINS, William J.; XU, Jie; YANG, Kin Shing; ZIEBENHAUS, Christopher Allen; (724 pag.)WO2018/195321; (2018); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 13526-66-4, name is 3-Bromo-6-chloroimidazo[1,2-b]pyridazine belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 3-Bromo-6-chloroimidazo[1,2-b]pyridazine

To 3-bromo-6-chloroimidazo[1,2-b]pyridazine (100.0 mg, 0.43 mmol) and tetrahydro-2H-pyran-4-ol (48 mg, 0.47 mmol) in N,N-dimethylformamide (2.0 mL) was added sodium hydride (12 mg, 0.52 mmol). The reaction was stirred at room temperature for an hour. Aqueous work-up with saturated NaHCO3 solution and ethyl acetate was followed by drying of the organic phase over MgSO4. After evaporation, 3-bromo-6-(tetrahydropyran-4-yloxy)-imidazo[1,2-b]pyridazine was obtained as an off-white solid (120 mg, 89%).MS (ESI (+)m/z): 297.59 (M+H+)1H NMR (CDCl3-d1, 300 MHz), delta 7.93 (d, J=9.6 Hz, 1H), 7.59 (s, 1H), 6.79 (d, J=9.6 Hz, 1H), 5.24 (m, 1H), 3.94 (m, 2H), 3.59 (m, 2-H), 2.13 (m, 2H), 1.83 (m, 2H).

The synthetic route of 13526-66-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Biogen Idec Ma Inc.; US2011/21513; (2011); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 21711-56-8, 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. 21711-56-8, name is 4,4”-Dichloro-1,1′:2′,1”-terphenyl, This compound has unique chemical properties. The synthetic route is as follows.

A nitrogen stream under preparation example 1 in synthetic a-1(20.0 g, 66.85 mmol), Preparation Example 2 in the synthesized a-2(17.40 g, 66.85 mmol), Pd (OAc) 2 (1.50 g, 6.69 mmol), NaOtBu (16.06 g, 167.12 mmol), P (tBu)3 (2.70 g,13.37 mmol) to 400ml of xylene to 150 C at 24 hours into dongan stirring. After completion of the reaction, and extracted with methylene chloride and concentrated under reduced pressure to give the b-1 30.9 g purified by column chromatography

The chemical industry reduces the impact on the environment during synthesis 4,4”-Dichloro-1,1′:2′,1”-terphenyl. I believe this compound will play a more active role in future production and life.

Reference:
Patent; Doosan Corporation; Cho, Hung Sang; Kim, Chung Han; Park, Ho Chul; Lee, Chang Jun; Sin, Jin Yong; Lee, Jae Hun; Baek, Young Mi; (19 pag.)KR2016/104607; (2016); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics