Ethers-buliding-blocks

Reference of 24599-58-4, The chemical industry reduces the impact on the environment during synthesis 24599-58-4, name is 2,5-Dimethoxytoluene, I believe this compound will play a more active role in future production and life.

General procedure: Standard reaction conditions: a 1.0 mmol sample of the aryl ether was dissolved in 1.8mL of acetonitrile and was added slowly over several minutes to a rapidly stirred solution of CAN (1.92g, 3.5mmol) which had been dissolved in 1.8 mL of distilled water in a 10mL round-bottom flask. After the addition was complete, the mixture was stirred for an additional 1 hour at room temperature open to the air. The mixture was diluted with 25 mL of water, and the resulting precipitate collected by suction filtration. The precipitate was washed with several 10 mL portions of water and then finally with approximately 5mL of ice cold ethanol. The resulting yellow solid (diquinone) was dried at room temperature under vacuum.

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, 2,5-Dimethoxytoluene, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Love, Brian E.; Simmons, Alexander L.; Tetrahedron Letters; vol. 57; 50; (2016); p. 5712 – 5715;,
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Synthetic Route of 33170-72-8, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 33170-72-8 name is 2-Bromo-1,1-dimethoxypropane, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

A solution of methyl 5-amino-6-bromopyrazine-2-carboxylate (500 mg, 2.15 mmol, 1.00 equiv), 2-bromo-1,1-dimethoxypropane (1.2 g, 6.56 mmol, 3.00 equiv), p-toluenesulfonic acid (76 mg, 0.44 mmol, 0.20 equiv) in acetonitrile (20 mL) was stirred for 12 h at 80 C. The mixture was concentrated under vacuum and the residue was purified by a silica gel column eluting with dichloromethane/methanol (10:1). This resulted in 400 mg (69%) of the title compound as a yellow solid. LC-MS (ES, m/z): 270 [M+H]+.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-Bromo-1,1-dimethoxypropane, and friends who are interested can also refer to it.

Reference:
Patent; Genentech, Inc.; Blaquiere, Nicole; Castanedo, Georgette; Feng, Jianwen A.; Hu, Baihua; Staben, Steven; Yuen, Po-wai; Wu, Guosheng; Lin, Xingyu; Burch, Jason; US2015/57260; (2015); A1;,
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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. 6443-69-2, name is 1,2,3-Trimethoxy-5-methylbenzene belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 6443-69-2

3,4,5-Trimethoxytoluene (1.82 g, 10 mmol) was dissolvedin a mixture of acetic acid (10 mL) and catalytic H2SO4 (0.01 mL), then a solution of the oxidant (15 mmol) was added dropwise over 10 min. The mixture was stirred and heated at 50C for 1 h. After cooling, the reaction mixture was extracted with CH2Cl2 (3 × 10 mL). The combined organic phases were washed with H2O and NaHCO3, then dried over anhydrous Na2SO4 and evaporated under reduced pressure. The residue was purified by silica gel column chromatography (PE/EtOAc, 5:1) to give CoQ0. CoQ0, red-colored needles, m.p. 55C-58C (Lit.1357C-59C).1H NMR (400 MHz, CDCl3): delta = 6.44 (q, J = 1.7 Hz, 1H),4.02 (s, 3H, OCH3), 4.00 (s, 3H, OCH3), 2.04 (d, J = 1.6 Hz,3H, CH3).13C NMR (101 MHz, CDCl3): delta = 184.4 (C=O), 184.2(C=O), 145.0, 144.8, 144.0, 131.2, 61.2 (OCH3), 61.1(OCH3), 15.4 (CH3).MS (ESI): m/z = 205 [M + Na]+.The spectroscopic data are in accord with the literature.

The synthetic route of 6443-69-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Lu, Bin; Qiu, Yong-Fu; Qi, Shi; Wang, Jin; Journal of Chemical Research; vol. 43; 11-12; (2019); p. 553 – 556;,
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Application of 1535-75-7, These common heterocyclic compound, 1535-75-7, name is 2-(Trifluoromethoxy)aniline, 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: Acetamides (1a-1x, 1ab, 1ac and 1ba-1bc). To a solution of 2-phenylacetic acid (7.0mmol), 2-(trifluoromethoxy)aniline (7.7mmol) in anhydrous CH2Cl2 (25mL) were added EDCI (1.745g, 9.1mmol) and DMAP (256.6mg, 2.1mmol). The reaction mixture was stirred at room temperature overnight, diluted with HCl (1M) aqueous solution, and extracted with CH2Cl2 (3×25mL). The combined organic phase was washed with saturated NaHCO3 aqueous solution and brine, dried over anhydrous Na2SO4, and concentrated under vacuum. Purification by flash chromatography (Silica gel, petroleum ether: ethyl acetate=50: 1 as eluent) gave the corresponding 2-phenyl-N-[2-(trifluoromethoxy)phenyl]acetamide compound.

Statistics shows that 2-(Trifluoromethoxy)aniline is playing an increasingly important role. we look forward to future research findings about 1535-75-7.

Reference:
Article; Zhao, Xiao-Jing; Zhao, Jie; Sun, Xin; Liu, Ji-Kai; Wu, Bin; Tetrahedron; vol. 73; 25; (2017); p. 3463 – 3477;,
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Electric Literature of 645-36-3, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 645-36-3 name is 2,2-Diethoxyethanamine, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

First, 1-naphtaldehyde (1.6 g, 10 mmol) and 2,2-dietoxyethanamine (1.3 g, 10 mmol) were mixed, and the mixture was stirred at 100C for from 30 min to 1 h. After allowed to cool, the reaction mixture was mixed with EtOH (25 mL), and the resulting mixture was stirred and made homogeneous. Next, a small amount of NaBH4 (0.38 g, 10 mmol) was gradually added and the mixture was then stirred at room temperature for from 1 h to overnight. After completion of the reaction, EtOH was distilled away while the mixture was concentrated under reduced pressure. (An appropriate amount of) Water was added to the resulting residue, and a product was extracted with AcOEt. A separated organic layer was washed with saturated saline and dried with Na2SO4. After that, the sample was filtered and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (AcOEt/hexane = 5/1) to yield compound 1 (2.3 g, 8.5 mmol, 85%) as colorless transparent liquid.

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

Reference:
Patent; National University Corporation Tottori University; KanonCure, Inc.; SHIOTA, Goshi; ITABA, Noriko; KANKI, Keita; SETO, Kenzo; SHIMIZU, Hiroki; KOUNO, Yohei; KUNITA, Shinya; ADUMI, Zyunya; SAKABE, Tomohiko; ABE, Kenichiro; MORIMOTO, Minoru; OKA, Hiroyuki; (77 pag.)EP3150207; (2019); B1;,
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Synthetic Route of 910251-11-5, The chemical industry reduces the impact on the environment during synthesis 910251-11-5, name is Potassium trifluoro(methoxymethyl)borate, I believe this compound will play a more active role in future production and life.

4-Fluoro-2-(4-fluorophenyl)-5-isopropoxy-6-(methoxymethyl)-N- methylbenzofuran-3-carboxamide A mixture of 6-bromo-4-fluoro-2-(4-fluorophenyl)-5-isopropoxy-N- methylbenzofuran-3-carboxamide (600 mg, 1.414 mmol) , potassium methoxymethyltrifluoroborate (2149 mg, 14.14 mmol), PdCl2(dppf) (310 mg, 0.424 mmol) and cesium carbonate (2074 mg, 6.36 mmol) in a mixture of toluene (60 mL) and water (20 ml) was flushed with N2 and then stirred at 85C for 48 hrs. The mixture was diluted wih EtOAc (200 mL). The water layer was removed. The organic layer was filtered and then concentrated to give a crude solid, which was purified by column chromatography (Biotage 25m, EtOAc/Hexane = 0 to 30%) to give 280 mg (51 %) of the product as a white solid. 1H NMR (400 MHz, CHLOROFORM-d) delta 7.99 – 7.92 (m, 2H), 7.41 (s, 1H), 7.21 – 7.13 (m, 2H), 6.12 (br. s., 1H), 4.62 (d, J=0.5 Hz, 2H), 4.56 – 4.47 (m, 1H), 3.51 – 3.47 (m, 3H), 3.07 (d, J=5.0 Hz, 3H), 1.37 (m, 6H). LCMS R, = 3.151 min., m/z 390 (M + H). The LC/MS data was obtained on a Shimadzu analytical LC /Micromass Platform LC (ESI+) at 220nm using the following set of conditions: Phenomenex Luna 3muiotaeta C18, 2 x 50 mm column, with a gradient of 0-100%B (B = 90% HPLC grade acetonitrile/ 0.1% trifluoro acetic acid/ 10% HPLC grade water), (A = 90% HPLC grade water / 0.1% trifluoroacetic acid/ 10% HPLC grade acetonitrile), in 4 minutes with a 1 minute hold at a rate of 0.8 mL/minute.

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, Potassium trifluoro(methoxymethyl)borate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; YEUNG, Kap-Sun; EASTMAN, Kyle J.; PARCELLA, Kyle E.; WO2014/159559; (2014); A1;,
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Ether | (C2H5)2O – PubChem

Adding a certain compound to certain chemical reactions, such as: 22236-10-8, name is 4-(Difluoromethoxy)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 22236-10-8, Formula: C7H7F2NO

Example 2 3- { [4- (DIFLUOROMETHOXY) PHENYL] AMINO}-1- (2-METHOXYETHYL)-4-PHENYL-LH-PYRROLE-2, 5- dione 3-CHLORO-1-(2-METHOXYETHYL)-4-PHENYL-LH-PYRROLE-2, 5-dione (0.13 mmol, 36 mg) AND 4- difluoromethoxyaniline (0.28 mmol, 45 mg) were dissolved in DMF (1 mL). The mixture was heated in a microwave reactor at 150C for 20 min.. After cooling, the reaction mixture was purified by HPLC (95% 0. 1M ammonium acetate buffer: 5% CH3CN No. 100% CH3CN) to give 13 mg (24%) of the title COMPOUND. 1H NMR (400 MHz, CDC13) : 8 7.25 (bs, 1H), 7.19-7. 08 (m, 3H), 7.02-6. 97 (m, 2H), 6.81-6. 75 (m, 2H), 6.66-6. 60 (m, 2H), 6.36 (t, J=74.0 Hz, 1H), 3. 83 (t, J=5.7 Hz, 2H), 3.63 (t, J=5.7 Hz, 2H), 3. 38 (s, 3H)

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

Reference:
Patent; ASTRAZENECA AB; WO2005/5417; (2005); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Adding a certain compound to certain chemical reactions, such as: 454-90-0, name is 3-(Trifluoromethyl)anisole, 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 454-90-0, Quality Control of 3-(Trifluoromethyl)anisole

In each of the examples in Table 3A, the substrate is reacted with the base in THF to form a metallic organoborate intermediate under the temperature and time conditions specified in Table 3A. The metallic organoborate intermediate is then reacted with the electrophile, E, in THF to form the functionalized products 11b to 11g under the following conditions:Similarly, the substituted arenes 10b-d reacted with 2b (25 C, 0.5-12 h) affording the corresponding borate which lead after subsequent cross-coupling (ZnCl2 (10 mol%), Pd(OAc)2 (3 mol%), S-Phos (6 mol%), 65 C, 1 h) with 12 (0.8 equiv) to the biphenyl derivatives llb-d in 75-95% yield (Table 3A, entries 2-4). For example, tmpBEtyMgCl LiCl (2.2 mL, 1.0 M in THF, 2.2 mmol) was added dropwise at 25 C to a solution of 3,5-(trifluoromethyl)anisole (10b; 352 mg, 2.0 mmol) in THF (2 mL) in a flame-dried and Argon-flushed Schlenk-tube equipped with septum and magnetic stirring bar. After stirring for 1 h at 25 C, ZnCl2 (0.2 mL, 1 M in THF, 10 mol%), Pd(OAc)2 (14 mg, 3 mol%), S-Phos (25 mg, 6 mol%) and ethyl 4-iodobenzoate (12; 441 mg, 1.6 mmol) were added followed by continuously stirring for 1 h at 65 C. After cooling to 25 C, the reaction mixture was diluted with Epsilon2Omicron (5 mL) and quenched with sat. NH4C1 (aq.) (5 mL). The aqueous layer was extracted with CH2CI2 (3x 15 mL). The combined organic phases were dried over Na2SC>4 and the solvent was removed under vacuum. Flash column chromatography (pentane-Et20, 9: 1) afforded lib (492 mg, 95%) as a pale yellow solid.

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; HAAG, Benjamin; WO2012/85169; (2012); A1;,
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51388-20-6, name is 4-(Benzyloxy)aniline hydrochloride, 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. HPLC of Formula: C13H14ClNO

4-{[4-(Benzyloxy)phenyI]amino}-2-tert-butyl-5-phenylisothiazol-3(2H)-one 1,1-dioxide; 2-fert-Butyl-4-chloro-5~phenylisothiazol-3(2H)-one 1,1-dioxide (0.3g, 1 mmol), 4- benzyloxyaniline hydrochloride (0.307g, 1.3 mmol) and TEA (0.304g, 3 mmol) was dissolved in dry DMSO (10 ml). The reaction was heated at 110 C for 25 min in a microwave reactor. The reaction mixture was diluted with water (200 ml) and extracted with EtOAc (200 ml), the organic phase was dried (MgSO4), filtered and evaporated. The residue was purified by silica gel column chromatography using a 65:35 mixture of heptane:EtOAc as eluant to give the title compound (0.345 g, 75 %).

The synthetic route of 51388-20-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ASTRAZENECA AB; WO2006/73363; (2006); A1;,
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Ether | (C2H5)2O – PubChem

Related Products of 22483-09-6, These common heterocyclic compound, 22483-09-6, name is 2,2-Dimethoxyethanamine, 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.

100 g of aminoacetaldehyde dimethyl acetal and 146 g of benzaldehyde are added to 2.5 liters of toluene, heated to reflux for 16 hours, and concentrated.The residue was dissolved in 1.8 L of methanol, 45 g of sodium borohydride was slowly added in portions, and the mixture was stirred at room temperature for 5 hours.Saturated ammonium chloride solution was added and extracted with ethyl acetate, followed by liquid separation, drying,Concentration gave 162 g of N-benzyl-2,2-dimethoxyethanamine and the crude product was used in the next reaction without purification.

Statistics shows that 2,2-Dimethoxyethanamine is playing an increasingly important role. we look forward to future research findings about 22483-09-6.

Reference:
Patent; Hunan Huateng Pharmaceutical Co., Ltd.; Bu Gonggaofamingren; (6 pag.)CN107778208; (2018); A;,
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