Chlorides-buliding-blocks

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. 33863-76-2, name is 1-Bromo-3-chloro-5-fluorobenzene belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. name: 1-Bromo-3-chloro-5-fluorobenzene

1-fluoro-3-(methylsulfonyl)benzene A stirred mixture of 1-bromo-3-fluorobenzene (10.0 g, 57.1 mmol), sodium methanesulfinate (7.00 g, 68.6 mmol), CuI (1.08 g, 5.71 mmol), L-proline (1.31 g, 11.4 mmol) and sodium hydroxide (0.456 g, 11.4 mmol) was heated in DMSO (135 mL) at 95 C. overnight (~18 h). The reaction was cooled, diluted with water, and then extracted with ethyl acetate (2*150 mL). The extracts were dried with MgSO4 and concentrated in vacuo. Chromatography on silica gel eluding with 25/75 ethyl acetate/hexane gave the title compound as a colorless solid (6.21 g). MS (ES) m/z 175.1. Intermediates 3, 12 by Third ApproachPrepared according to a procedure similar to that described for Intermediate 8, using the appropriate halogenated thiophenol and alkylating agent R-LG (where LG was a leaving group such as a bromine, iodide, chloride, or tosylate), and eluting with an appropriate eluent. Intermediate 31,3-difluoro-5-(methylsulfonyl)benzene; MS (EI) m/z 192.

The synthetic route of 33863-76-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Bernotas, Ronald Charles; Ullrich, John William; Travins, Jeremy Mark; Wrobel, Jay Edward; Unwalla, Rayomand Jal; US2010/273816; (2010); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 110407-59-5,Some common heterocyclic compound, 110407-59-5, name is 2-Chloro-4-fluorobromobenzene, molecular formula is C6H3BrClF, 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.

Preparation 27:4-(2-CHLORO-4-FLUOROPHENYL)PYRIDINETo a mixture of l-bromo-2-chloro-4-fluorobenzene (2.0 g, 9.5 mmol), l-pyridyl-4-boronic acid (1.3 g, 10.5 mmol), sodium carbonate (2.0 g, 23.9 mmol) and triphenylphosphine (0.5 g, 1.9 mmol) in toluene/ethanol (1 : 1, 60 ml) under nitrogen, was added tris(dibenzylideneacetone)dipalladium(0) (0.22 g , 2.5 mol%). The mixture was heated at reflux for 48 h, cooled to ambient temperature and diluted with water (50 ml) and ethyl acetate (100 ml). The organic layer was separated and the aqueous phase was extracted with ethyl acetate (2×50 ml). The combined organic phases was evaporated to dryness and dissolved in aqueous hydrochloric acid (10%, 50 ml). The solution was washed with diethyl ether (2×40 ml), basified with aqueous sodium hydroxide (2M) and extracted with ethyl acetate (2×50 ml). The combined organic phases was dried (MgSO4) and evaporated to dryness to give the title compound (1.16 g). MS m/z (rel. intensity, 70 eV) 209 (33), 207 (M+, bp), 208 (14), 172 (24), 145 (16).

The synthetic route of 110407-59-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; A. CARLSSON RESEARCH AB; WO2007/65655; (2007); 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. 81927-55-1, name is Benzyl 2,2,2-trichloroacetimidate belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. name: Benzyl 2,2,2-trichloroacetimidate

To a solution of Scheme 5-7 compound SI (24 g, 0. 136 mol) and benzyl 2,2,2- trichloroacetimidate (51.3 g, 0.204 mol) in cychexane/dichloromethane (600 mL/120 niL) at room temperature was added triiluoromeihanesulfomc anhydride (cat. L2 mi..) dropwise. The reaction mixture was stirred at room temperature overnight and filtered. The filtrate was washed with sat. NaHC03 and brine, dried over anhydrous Na2Si, filtered and concentrated. The residue was purified by column chromatography on silica gel (eluted with petroleum ether: ethyl acetate =10: 1) to afford the title compound (S2) (35 g, 93.3% yield) as a yellow oil.

The synthetic route of 81927-55-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ACHILLION PHARMACEUTICALS, INC.; WILES, Jason, Allan; PHADKE, Avinash, S.; DESHPANDE, Milind; AGARWAL, Atul; CHEN, Dawei; GADHACHANDA, Venkat, Rao; HASHIMOTO, Akihiro; PAIS, Godwin; WANG, Qiuping; WANG, Xiangzhu; GREENLEE, William; (333 pag.)WO2017/35401; (2017); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Related Products of 1435-48-9, These common heterocyclic compound, 1435-48-9, name is 2,4-Dichloro-1-fluorobenzene, 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.

Alternate preparation: To a solution of 2,4-dichloro-1-fluorobenzene (100 g, 0.606 mol) in THF (1.4 L) under nitrogen at -78 C, was added a 2.5 M solution of n-BuLi in hexanes (267 mL, 0.666 mol) dropwise over a period of 30 min, maintaining the temperature between -70 to -78 C. After 1.5 h stirring at -78 C, methyl formate (72.6 mL, 1.21 mol) was added slowly, and the reaction mixture was stirred overnight, warming up to rt. The reaction was quenched with sat. aqueous NH4CI (200 mL) and the organic layer was separated. The organic solvents were removed by distillation at atmosphere pressure and the crude material which contained a small amount of THF was crystallized from hexanes to give the title compound.

Statistics shows that 2,4-Dichloro-1-fluorobenzene is playing an increasingly important role. we look forward to future research findings about 1435-48-9.

Reference:
Patent; OSI PHARMACEUTICALS, LLC; JIN, Meizhong; MULVIHILL, Mark, J.; STEINIG, Arno, G.; WANG, Jing; WO2012/158658; (2012); 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. 823-57-4, name is 2-Bromo-5-chloroaniline belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C6H5BrClN

2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphorinane 2,4,6-trioxide (50 wtpercentsolution in ethyl acetate, 8.1 mL, 13.6 mmol) was added slowly to a stirred solution of2-15 bromo-5-chloroaniline (1.5 g, 7.27 mmol), thiane-4-carboxylic acid (1.0 g, 6.84 mmol)and pyridine (2.7 mL, 33.4 mmol) in ethyl acetate (14 mL) at ooc under nitrogen. Thereaction mixture was allowed to warm slowly to 20°C and stirred for 64 h. The resultantsuspension was diluted with ethyl acetate (20 mL) and quenched with water (30 mL).The solids were collected by filtration, washing sequentially with ethyl acetate (2 x 2020 mL), water (20 mL) and diethyl ether (2 x 20 mL). The solids were dried at 50°C invacuo for 16 h, to afford the title compound (2.08 g, 86percent) as a pink powder. DH (500MHz, DMSO-d6) 9.51 (br s, 1H), 7.71-7.65 (m, 2H), 7.21 (dd, J8.6, 2.6 Hz, 1H), 2.71-2.62 (m, 4H), 2.57 (tt, J 11.5, 3.1 Hz, 1H), 2.19-2.08 (m, 2H), 1.78-1.63 (m, 2H). HPLCMS(method 5): MH+ m/z 334, RT 1.90 minutes.

The synthetic route of 823-57-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; UCB BIOPHARMA SPRL; BRACE, Gareth Neil; CHAPPELL, Rose Elizabeth; DEBOVES, Herve Jean Claude; FOLEY, Anne Marie; FOULKES, Gregory; JONES, Elizabeth Pearl; LECOMTE, Fabien Claude; QUINCEY, Joanna Rachel; SCHULZE, Monika-Sarah Elisabeth Dorothea; SELBY, Matthew Duncan; SMALLEY, Adam Peter; TAYLOR, Richard David; TOWNSEND, Robert James; ZHU, Zhaoning; (278 pag.)WO2018/229079; (2018); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of 116369-24-5,Some common heterocyclic compound, 116369-24-5, name is 4-Bromo-5-chloro-2-fluoroaniline, molecular formula is C6H4BrClFN, 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.

Add 4-bromo-5-chloro-2-fluoroaniline (0.5 g, 2.24 mmol) to 1,4-dioxane (8.0 mL) and water (4.0 mL), and then add 1-isopropyl-5 in this order. -(4,4,5,5-tetramethyl-1,3,2-dioxorane-2-yl) pyridine-2 (1H) -one (0.65 g, 2.46 mmol),Potassium carbonate (0.94g, 6.72mmol) and Pd (dppf) Cl2 (0.1g, 0.12mmol),After replacing with nitrogen three times, the reaction was carried out at 80 C for 10 hours.After the reaction is completed, cool to room temperature, pour the reaction solution into water, extract with ethyl acetate, combine the organic phases, dry, filter, and concentrate. The residue is purified by silica gel column chromatography (eluent: ethyl acetate / petroleum ether). = 3/1),The title compound (0.4 g, yield: 64%) was obtained in this step.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4-Bromo-5-chloro-2-fluoroaniline, its application will become more common.

Reference:
Patent; Sichuan Kelun Botai Bio-pharmaceutical Co., Ltd.; Liu Jinming; Cai Jiaqiang; He Ting; Wang Lichun; Wang Jingyi; (27 pag.)CN110240593; (2019); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 102-49-8, These common heterocyclic compound, 102-49-8, name is 3,4-Dichlorobenzylamine, 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.

General procedure: EDC hydrochloride (1.2 mmol) and HOBt (1.0 mmol) were added at 0 °C to each parallel vial containing a solution of the appropriate acid 44-53 (1 mmol) in dichloromethane, and either cyclohexylamine or 2,3-dichlorobenzylamine (1.5 mmol) was added at the same temperature. After warming up to room temperature, the vials were placed in the Buechi Syncore reactor. Stirring was maintained at 300 rpm overnight and then morpholinomethylpolystyrene (3 equiv/mol) was added. The solutions were kept at room temperature for 1 h, then polymer bound p-toluenesulfonic acid (3 equiv/mol) was added to each vial, and the reaction mixtures were stirred at room temperature for an additional 24 h. The mixtures were filtered and the solutions were evaporated to dryness to give carboxamides 6-25. Solid products were purified by crystallization from ethanol or aqueous ethanol. Oil products were purified by silica gel column chromatography column (dichloromethane as eluent).

The synthetic route of 102-49-8 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Piscitelli, Francesco; Ligresti, Alessia; La Regina, Giuseppe; Gatti, Valerio; Brizzi, Antonella; Pasquini, Serena; Allar, Marco; Carai, Mauro Antonio Maria; Novellino, Ettore; Colombo, Giancarlo; Di Marzo, Vincenzo; Corelli, Federico; Silvestri, Romano; European Journal of Medicinal Chemistry; vol. 46; 11; (2011); p. 5641 – 5653;,
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. 1005-56-7, name is O-Phenyl carbonochloridothioate, A new synthetic method of this compound is introduced below., COA of Formula: C7H5ClOS

In a 30 ml eggplant type flask,Methyl alpha-L-fucopyranoside178.2 mg (1.0 mmol),Dioctyldichlorotin41.6 mg (0.10 mmol),Tetrabutylammonium iodide110.7 mg (0.30 mmol),Tetrahydrofuran10 ml was added,Followed by stirring.To this mixed solutionPhenyl chlorothionoformate0.175 ml (1.3 mmol) was added,Then,1,2,2,6,6-pentamethylpiperidine0.271 ml (1.5 mmol) was added,The reaction was carried out at 20 C. for 6 hours.After completion of the reaction,To the reaction solution was added saturated aqueous solution of ammonium chloride20 ml was added,The extraction operation was carried out three times with 20 ml of ethyl acetate.The organic phase (ethyl acetate phase) was washed with 20 ml of water,After washing with 20 ml of an aqueous sodium chloride solution,It was dried over anhydrous magnesium sulfate,After filtration,The solvent (ethyl acetate) was distilled off under reduced pressure.The residueBy silica gel chromatographyAs a result of purification (developing solvent n-hexane: ethyl acetate = 5: 1)Methyl 3-O-phenoxythiocarbonyl-alpha-L-fucopyranosideWas obtained at 283.8 mg (yield 90%).Since the alpha-L-fucopyranoside in which the hydroxyl group other than the 3-position was monophenoxythiocarbonylated could not be obtained, the selectivity of methyl 3-O-phenoxythiocarbonyl-alpha-L-D-fucopyranoside was 100%.

The synthetic route of 1005-56-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; NAGASAKI UNIVERSITY; TOKUYAMA CORPORATION; ONOMURA, OSAMU; MURAMATSU, WATARU; IWASAKI, FUMIAKI; (32 pag.)JP5669643; (2015); B2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 6529-53-9, 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 6529-53-9 as follows.

Step D: Preparation of 6-chloro-2-[2-(4-chlorophenyl)ethoxy]-9-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)purine To a solution of crude 6-chloro-2-hydroxy-9-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-purine (44.0 g, ca 100 mmoles), dissolved in glass distilled dimethylformamide (2 Liters), is added 2-(4-chlorophenyl)ethyl bromide (43.6 g, 200 mmoles), followed by cesium carbonate (100 g, 307 mmoles). The mixture is stirred at room temperature for 24 hours, evaporated to dryness (TBath<50 C.), and the residue partitioned between dichloromethane (1 liter) and water (1 liter). The organic phase is dried (Na2SO4), filtered, and evaporated. The residue is washed with. hexanes (2*500 mL) to remove excess 2-(4-chlorophenyl)ethyl bromide, then dissolved in dichloromethane (250 mL), adsorbed onto silica gel (100 g), and chromatographed over silica gel (1000 g) using a gradient of ethyl acetate (30%?50%) in hexanes. Fractions containing product are collected and evaporated to dryness to afford the desired intermediate as a yellow foam. Typical yield: 40-70% for Steps C and D combined. 1H-NMR (DMSO-d6): delta8.06 (s, 1H, H-8), 7.25 (s, 4H, Ar), 6.10 (d, 1H, H-1', J=4.8 Hz), 5.90 (dd, 1H, H-2', J=5.3, 5.0 Hz), 5.62 (dd, 1H, H-3', J=5.3, 5.2 Hz), 4.63-4.56 (m, 2H, OCH2-C), 4.43-4.37 (m, 2H, H-4' & H-5'alpha), 4.29 (dd, 1H, H-5'beta, J=12.0, 4.1 Hz), 3.11 (t, 2H, O-C-CH2-, J=6.9 Hz), 2.10 (s, 3H, COCH3), 2.06 (s, 3H, COCH3), 2.05 (s, 3H, COCH3). ; Step D: Preparation of 6-chloro-2-[2-(4-chlorophenyl)ethoxy]-9-(2,3,5-tri-O-acetyl-[beta]-D-ribofuranosyl)purineEMI8.0[0062] To a mixture of 6-chloro-2-hydroxy-9-(2,3,5-tri-O-acetyl-[beta]-D-ribofuranosyl)purine (Example 2, Step C) and 2-(4-chlorophenyl)ethyl bromide (300.1 g, 1.36 mol) in dimethylformamide (7,280 mL), cesium carbonate (665 g, 2.04 mol) was added. The reaction was allowed to stir under inert atmosphere for 32 hours. The reaction was concentrated under reduced pressure and partitioned between dichloromethane and water. The organic layer was dried over magnesium sulfate, filtered, and evaporated under reduced pressure. The crude product was purified by column chromatography eluting with ethyl acetate/heptanes to yield a yellow solid of 6-chloro-2-[2-(4-chlorophenyl)ethoxy]-9-(2,3,5-tri-O-acetyl-[beta]-D-ribofuranosyl)purine Typical Yield: 64% According to the analysis of related databases, 6529-53-9, the application of this compound in the production field has become more and more popular. Reference:
Patent; Moorman, Allan R.; US2003/199686; (2003); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electric Literature of 202197-26-0, A common heterocyclic compound, 202197-26-0, name is 3-Chloro-4-((3-fluorobenzyl)oxy)aniline, molecular formula is C13H11ClFNO, 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.

Example 6 4-[3-chloro-4-(3-fluoro-benzyloxy)-phenylamino]-6-nitro-quinazoline In a flask equipped with a reflux condenser, 6-nitro-4-chloro-quinazoline 1.20g (5.7mmol) and 4-(3-fluorobenzyloxy)-3-chloroaniline 1.37g (5.6mmol) were dissolved into 80mL of isopropanol, and the solution was refluxed for 3h. Then a lot of yellow solid was deposited, which was filtered, dried under vacuum, and identified as the title compound. Yield: 67%. 1H-NMR (400MHz, CDCl3): delta11.30(1H, br), 9.54-9.48(1H, m), 8.45-8.41(1H, m), 8.31-8.25(1H, m), 7.98-7.89(1H, m), 7.50-7.47(1H, m), 7.35-7.26 (1H, m), 7.05-6.96(1H, m), 6.90-6.80(2H, m), 7.74-7.60(2H, m), 4.84(2H, s).

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; SHANGHAI ALLIST PHARMACEUTICAL., INC.; EP1990337; (2008); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics