Ethers-buliding-blocks

Adding a certain compound to certain chemical reactions, such as: 168268-00-6, name is 4-(Benzyloxy)-3-fluoroaniline, belongs to ethers-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 168268-00-6, name: 4-(Benzyloxy)-3-fluoroaniline

A solution of 1.23 L of acetone and 600 ml of water in sodium carbonate (132 g, 1.25 mol) was added to the oil and thenCool down to 05C, add benzyl chloroformate (127.8g, 0.748mol) dropwise, continue stirring for 15min,Filtration gave 133 g of a yellow solid as a compound of formula (4) with a yield of 98.9%.

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Reference:
Patent; Shanghai Pharmaceutical Industry Institute; China Pharmaceutical Industry Zongyuan; Li Jianqi; Zeng Huang; Zhang Zixue; Liu Yu; Pan Deng; Zou Lei; Zhang Yi; (8 pag.)CN108069919; (2018); A;,
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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. 589-10-6, name is (2-Bromoethoxy)benzene, This compound has unique chemical properties. The synthetic route is as follows., Safety of (2-Bromoethoxy)benzene

General procedure: Anhydrous K2CO3 (1.2 M equiv) was added to the solution of GA or compound 42 (0.2 mmol) and halogenating agents (1.2 M equiv) in dry DMF (5 mL). The reaction mixture was stirred at room temperature until the starting material was not observed by TLC. The mixture was treated with H2O (20 mL), the aqueous layer was extracted with EtOAc (2×20mL). The joined organic extracts were washed three times with H2O (60 mL) and saturated NaCl (60 mL). The organic layer was dried over anhydrous Na2SO4 and concentrated to dryness under reduced pressure. The residue was chromatographed using a silica gel column to afford the pure target products.

According to the analysis of related databases, 589-10-6, the application of this compound in the production field has become more and more popular.

Reference:
Article; Wang, Li-Jun; Geng, Chang-An; Ma, Yun-Bao; Huang, Xiao-Yan; Luo, Jie; Chen, Hao; Zhang, Xue-Mei; Chen, Ji-Jun; Bioorganic and Medicinal Chemistry Letters; vol. 22; 10; (2012); p. 3473 – 3479;,
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Synthetic Route of 6358-77-6, A common heterocyclic compound, 6358-77-6, name is 5-Bromo-2-methoxyaniline, molecular formula is C7H8BrNO, 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 14: step a 4-Bromo-2-isothiocyanato-1-methoxy-benzene A solution of sodium bicarbonate (3.74 g, 44.5 mmol) in water (75 mL) was added to commercially available 5-bromo-2-methoxy-phenylamine (3 g, 14.8 mmol) in chloroform (75 mL). Thiophosgene (1.42 mL, 18.6 mmol) was then added. The biphasic solution was stirred at room temperature for 1 h. The phases were separated and the aqueous phase was extracted with CH2Cl2. The organic phase was dried (Na2SO4), filtered, and concentrated, yielding the crude title compound as an off-white solid.

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; JACKSON, Paul Francis; Manthey, Carl; Rhodes, Kenneth; Scannevin, Robert; Leonard, Kristi Anne; Barbay, Joseph Kent; Todd, Matthew; Springer, Barry A.; US2012/302573; (2012); A1;,
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Related Products of 60789-54-0, These common heterocyclic compound, 60789-54-0, name is ((4-Bromobutoxy)methyl)benzene, 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.

Reference Example 18 4-Benzyloxy-3-(4-benzyloxybutoxy)benzonitrile 4-Benzyloxy-3-hydroxybenzonitrile (3.4g) and potassium carbonate (6.3g) were dissolved in N,N-dimethylformamide (20mL). To the mixture was added benzyl 4-bromobutylether (3mL), and the mixture was stirred at 50C for 16 hours. To the reaction mixture was added dropwise 2mol/L hydrochloric acid (4mL), and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with brine and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the obtained residue was purified by column chromatography on silica gel (eluent:ethyl acetate/hexane=1/5) to give the title compound (5.9g). 1H-NMR (CDCl3) delta ppm: 1.70-2.10 (4H, m), 3.55 (2H, t, J=6.1Hz), 4.04 (2H, t, J=6.5Hz), 4.49 (2H, s), 5.17 (2H, s), 6.90 (1H, d, J=8,2Hz), 7.08 (1H, d, J=1.9Hz), 7.19 (1H, dd, J=1.9Hz, 8.2Hz), 7.24-7.45 (10H, m)

Statistics shows that ((4-Bromobutoxy)methyl)benzene is playing an increasingly important role. we look forward to future research findings about 60789-54-0.

Reference:
Patent; Kissei Pharmaceutical Co., Ltd.; EP1698635; (2006); A1;,
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17061-62-0, name is Bis(4-methoxybenzyl)amine, belongs to ethers-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: 17061-62-0

To a stirred solution of 100.1 (100 g, 0.39 mol) in DCM (1 L) was added TEA (71 mL, 0.51 mol), followed by dropwise addition of methanesulfonyl chloride (36 mL, 0.47 mol). The internal temperature was kept between 5-10 C during the addition of methane sulfonyl chloride. Once the addition was complete, the cooling bath was removed and the mixture was stirred at RT until TLC analysis indicated that the reaction was complete. Thereafter, water (1 L) was added, the layers were separated and the aqueous layer was extracted with DCM (2 x 500 mL). The combined organic layers were washed with brine (2 x 1 L), dried over Na2SO4, and concentrated in vacuo. The residue was purified on a silica gel column, employing a gradient of 10-80% EtOAc in hexanes, to afford 120 g (0.36 mol, 92%) of 101.0 as white solid.1H-NMR (400 MHz, CDCl3) delta 7.26 (dd, J=2.12, 6.60 Hz, 4H) 6.91 (dd, J=2.12, 6.62 Hz, 4H) 4.28 (s, 4H) 3.83 (s, 6H) 2.75 (s, 3H).

The synthetic route of 17061-62-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; AMGEN INC.; CHEN, Ning; CHEN, Yinhong; DEBENEDETTO, Mikkel V.; DRANSFIELD, Paul John; HARVEY, James S.; HEATH, Julie Anne; HOUZE, Jonathan; KHAKOO, Aarif Yusuf; LAI, Su-Jen; MA, Zhihua; NISHIMURA, Nobuko; PATTAROPONG, Vatee; SWAMINATH, Gayathri; YEH, Wen-Chen; KREIMAN, Charles; (308 pag.)WO2018/93579; (2018); A1;,
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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. 701-56-4, name is 4-Methoxy-N,N-dimethylaniline, A new synthetic method of this compound is introduced below., Application In Synthesis of 4-Methoxy-N,N-dimethylaniline

General procedure: Under an atmosphere of N2, KOt-Bu (2.2 mmol), dioxane (0.9 mL), DMSO (1.65 mmol), tertiary amine 1 (0.55 mmol), and aryl halide 2(1.65 mmol) were successively added to a Schlenk reaction tube. The mixture was stirred vigorously at 80-120 C for 12 h. Then the mixture was diluted with EtOAc, washed with sat. brine, and dried (anhyd Na2SO4). Then the solvent was removed under reduced pressure and the residue was purified by flash column chromatography (petroleum ether and petroleum ether-EtOAc, 100:1 for the methoxy group derived products) to give pure products 3.

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:
Article; Huang, Pei; He, Bang-Yue; Wang, Hui-Min; Lu, Jian-Mei; Synthesis; vol. 47; 2; (2015); p. 221 – 227;,
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Related Products of 702-24-9, These common heterocyclic compound, 702-24-9, name is 4-Methoxy-N-methylbenzylamine, 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.

Place ethyl 6,8-dichloroimidazo[ 1 ,2-bj pyridazine-3 -carboxylate (3 g, 11.54mmol), 1-(4-methoxyphenyl)-N-methylmethanamine (2.267 g, 15.00 mmol), and N,NDiisopropylethylamine (DIPEA) (4.03 mL, 23.07 mmol) in a 100 mL round bottle flask along with THF (15 mL). It was sealed and heated to 80°C for 6 hours. The reactionmixture was concentrated and purified with silica gel chromatography. The product came out when eluting with 35percent ethyl acetate in hexane. The fractions containing product was collected and concentrated to provide the product (3.7 g, 9.87 mmol, 86percent yield, 100percentpurity). LC retention time 1.06 mm [Al. MS (ES+) m/z: 375 (MH). ?H NMR (400MHz, CHLOROFORM-d):8.14 – 8.09 (m, 1H), 7.20 – 7.13 (m, 2H), 6.89 – 6.83 (m, 2H), 6.11 (s, 1H), 5.49 (s, 2H),4.44 (q, J=7.2 Hz, 2H), 3.84 – 3.77 (m, 3H), 3.17 (s, 3H), 1.42 (t, J=7.2 Hz, 3H)

Statistics shows that 4-Methoxy-N-methylbenzylamine is playing an increasingly important role. we look forward to future research findings about 702-24-9.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; WEINSTEIN, David S.; DUNCIA, John V.; SPERGEL, Steven H.; (76 pag.)WO2018/93968; (2018); A1;,
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Electric Literature of 349-65-5, The chemical industry reduces the impact on the environment during synthesis 349-65-5, name is 2-Methoxy-5-(trifluoromethyl)aniline, I believe this compound will play a more active role in future production and life.

5-(Trifluoromethyl)-2-methoxyaniline was treated with CDI, followed by 4-(1-oxoisoindolin-5-yloxy)aniline according to Method C2d to afford the urea. Entry 26: 4-Hydroxyacetophenone was reacted with 4-fluoronitrobenzene according to Method A13, Step 1 to give 4-(4-acetylphenoxy)nitrobenzene.

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-Methoxy-5-(trifluoromethyl)aniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Riedl, Bernd; Dumas, Jacques; Khire, Uday; Lowinger, Timothy B.; Scott, William J.; Smith, Roger A.; Wood, Jill E.; Monahan, Mary-Katherine; Natero, Reina; Renick, Joel; Sibley, Robert N.; US2001/11135; (2001); A1;; ; Patent; BAYER CORPORATION; US2003/181442; (2003); A1;,
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Adding a certain compound to certain chemical reactions, such as: 175278-17-8, name is 2-Bromo-4-(trifluoromethoxy)aniline, belongs to ethers-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 175278-17-8, Recommanded Product: 2-Bromo-4-(trifluoromethoxy)aniline

To a mixture of 2-bromo-4-(trifluoromethoxy)aniline (1.00 mmol), triethylamine (1.5 mmol) and P(o-tol)3 (0.40 mmol) in DMF (0.5 M) in a glass pressure tube under nitrogen gas were added ethyl acrylate (1.0 mmol) and palladium acetate (0.20 mmol). The tube was sealed and heated to 120 0C for 18 h. The resulting solution was concentrated under vacuum and purified by column chromatography. Retention time (min) = 2.467, method [1], MS(ESI) 276.1 (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, 2-Bromo-4-(trifluoromethoxy)aniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ELAN PHARMACEUTICALS, INC.; SHAM, Hing, L.; KONRADI, Andrei, W.; HOM, Roy, K.; PROBST, Gary, D.; BOWERS, Simeon; TRUONG, Anh; NEITZ, R., Jeffrey; SEALY, Jennifer; TOTH, Gergely; WO2010/91310; (2010); A1;,
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Adding a certain compound to certain chemical reactions, such as: 17715-69-4, name is 1-Bromo-2,4-dimethoxybenzene, belongs to ethers-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 17715-69-4, Safety of 1-Bromo-2,4-dimethoxybenzene

General procedure: Synthesis of 4′-methoxybiphenyl-4-carbonitrile. A reaction vessel equipped with filtration frit was charged with polystyrene resin-bound benzyl(di-tert-butyl)phosphonium chloride (6.20 mg, 4% mol, 100-200 mesh resin containing 1.60 mmol/g phosphonium hydrochloride) and flushed with argon. Next, 5mL of degassed dioxane was added followed by 20 mL of diisopropylamine and reaction mixture was agitated for 1 h at room temperature. Subsequently, the solvent was removed and the resin washed with degassed dioxane (3×5 mL). The resin was resupended in dioxane (5.0 mL) and Pd2(dba)3·CHCl3 (5.20 mg, 2% mol) added and the reaction mixture was agitated for 12 h at room temperature. The Pd-doped resin becomes black in colour. The solvent was removed and catalyst washed with degassed dioxane (3×5 mL). 4-Bromobenzonitrile (45.5 mg, 0.25 mmol), 4-methoxyphenylboronic acid (42.0 mg, 0.28 mmol), Cs2CO3 (179.2 mg, 0.55 mmol), 5 mL of degassed dioxane were added and the suspension agitated for 72h at room temperature. The solution was filtered and the Pd-doped catalyst re-suspended and washed with degassed dioxane (3 x 5 mL). Evaporation of the combined dioxane extracts under vacuum and purification by chromatography on silica gel (ethyl acetate/hexane 1:9) afforded the title compound (41 mg, 80%). All entries reported in table 2 were conducted under the above conditions.

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; Ullah, Ehsan; McNulty, James; Sliwinski, Marcin; Robertson, Al; Tetrahedron Letters; vol. 53; 31; (2012); p. 3990 – 3993;,
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