Ethers-buliding-blocks

Synthetic Route of 32338-02-6, The chemical industry reduces the impact on the environment during synthesis 32338-02-6, name is 2-Bromo-4-methoxyaniline, I believe this compound will play a more active role in future production and life.

General procedure: A mixture of benzyl 1-oxa-6-azaspiro[2.5]octane-6-carboxylate (247 mg, 1.0 mmol), 2-bromo-4-methoxyaniline (303 mg, 1.5 mmol) and lithium perchlorate (190 mg, 1.7 mmol) were taken in acetonitrile (3.0 mL). The reaction mixture was heated to 90 °C for 18 h. The reaction mixture was diluted with ethyl acetate (20 mL) and washed with water. The organic layer was dried over sodium sulfate and concentrated under reduced pressure, and the product was purified by column chromatography (silica gel, 50percent EtOAc/hexanes) to provide benzyl 4-(((2-bromo-4-methoxyphenyl)amino)methyl)-4-hydroxypiperidine-1-carboxylate, 5c (358 mg, 80percent) as a colourless syrup.

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

Reference:
Article; Kurissery, A. Tony; Rajkumar, G. Abraham; Arvapalli, Venkata Satyanarayana; Pitchumani, Venkatachalam; Tetrahedron Letters; vol. 58; 37; (2017); p. 3607 – 3611;,
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Electric Literature of 27060-75-9, 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. 27060-75-9, name is 1-Bromo-4-methoxy-2-methylbenzene, This compound has unique chemical properties. The synthetic route is as follows.

To a CCl4 solution (125 mL) of 2-bromo-5-methoxytoluene (0.050 mol) and NBS (0.055 mol) was added AIBN (0.001 mol), and the mixture was stirred at 80 C for 18 h. The mixture was diluted with hexane before filtration through a Celite pad. Evaporation of the solvent followed by washing of the residue with ethyl acetate gave 4-bromo-3-(bromomethyl)anisole.

The chemical industry reduces the impact on the environment during synthesis 1-Bromo-4-methoxy-2-methylbenzene. I believe this compound will play a more active role in future production and life.

Reference:
Article; Yoshida, Hiroto; Yoshida, Ryuma; Mukae, Masashi; Ohshita, Joji; Takaki, Ken; Chemistry Letters; vol. 40; 11; (2011); p. 1272 – 1274;,
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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 54314-84-0 as follows. Computed Properties of C10H13BrO

To a solution of – uoro- , – y roxy- enza e y e (11.15 g, 71.42 mmol) in anhydrous DMSO (88 mL) under nitrogen were added sequentially sodium t-butoxide (13.72 g, 142.84 mmol) and benzyl-3-bromopropyl ether (17.29 g, 78.56 mmol) and the reaction mixture stirred at rt for 18 h. The mixture was diluted with water (400 mL) and extracted with EtOAc (4×100 mL). The combined organic layer was washed with water and brine, dried over MgS04, filtered and concentrated in vacuo. Purification was completed by flash chromatography (20percent EtOAc / hexane). Yield 11.5 g (77 percent).1H NMR (400 MHz, CHLOROFORM-^) delta ppm 11.62 (s, 1 H), 10.23 (s, 1 H), 7.42 – 7.16 (m, 5 H), 7.05 (dd, J=8.8, 5.3 Hz, 1 H), 6.54 (t, J=9.6 Hz, 1 H), 4.52 (s, 2 H), 4.13 (t, J=6.3 Hz, 2 H), 3.68 (t, J=6.1 Hz, 2 H), 2.12 (quin, J=6.2 Hz, 2 H). 19F NMR (376 MHz, CHLOROFORM- d): -132 ppm.

According to the analysis of related databases, 54314-84-0, the application of this compound in the production field has become more and more popular.

Reference:
Patent; ANACOR PHARMACEUTICALS, INC.; HERNANDEZ, Vincent, S.; DING, Charles; PLATTNER, Jacob, J.; ALLEY, Michael Richard, Kevin; ROCK, Fernando; ZHANG, Suoming; EASOM, Eric; LI, Xianfeng; ZHOU, Ding; WO2012/33858; (2012); A2;,
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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. 19500-02-8, name is 3-Methoxy-2-methylaniline belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Formula: C8H11NO

Example 2: Preparation ofN-[17-[2-(3-isopropylpyrazol-l-yl)-7-methoxy-8- methylquinolin-4-yloxy]- 13-methyl-2,14-dioxo-3,13-diazatricyclo[13.3.0.04’6]octadec- 7-ene -4-carbonyl] (dimethylamino)sulfonamide (29) .; Step 1: Synthesis of ethyl 4-hydroxy-7-methoxy-8-methylquinoline-3-carboxylate (11).; 10 EPO Diethyl ethoxymethylenemalonate (17.2 g, 79.6 mmol) was added to 2-methyl-m- anisidine (8.4 g, 61.2 mmol) (exothermic reaction). Then, diethylether (100 mL) was added and the mixture was stirred overnight at room temperature. The solvent was evaporated and the residue re-dissolved in ether (50 mL), filtered, washed with heptane and dried to give 12 g of an intermediate. This intermediate was added portion wise to diphenyl ether (50 mL) pre-heated at 230 0C. The reaction mixture was successively heated to 250 0C for 1.5 h, cooled at room temperature, and diluted with heptane (200 mL). The precipitate was filtered off, and successively washed with heptane and ether to give 9.2 g (57.5 percent) of the target product 11 as a yellow powder: m/z = 262 (M + H)+.

The synthetic route of 19500-02-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; TIBOTEC PHARMACEUTICALS LTD.; MEDIVIR AB; WO2007/14925; (2007); 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. 2062-98-8, name is Perfluoro(2-methyl-3-oxahexanoyl) fluoride belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C6F12O2

In a four-necked flask equipped with a stirrer, a thermometer, a dropping funnel, and a reflux condenser (anhydrous calcium chloride at the top),Add 1,3-dimethyl-1,3,5-triazine (2.76 g, 24 mmol)And dichloromethane (30 mL),After stirring to dissolve, add triethylamine (3.25mL, 26mmol) and cool to 0 C.Was added dropwise with stirring hexafluoropropylene oxide dimer (6.64g, 20mmol),After 1 hour, the addition was completed. After the addition, the reaction was stirred at 0 C for 3 hours.The reaction mixture was washed with 10% sodium hydroxide solution (50 mL) and separated. The organic layer was washed with water, dried over anhydrous sodium sulfate, and the solvent was spin-dried.The residue was separated and purified by column chromatography [dichloromethane / methanol (v / v) = 20/1],7.86 g of a colorless transparent liquid fluorinated intermediate I-1 were obtained,Yield: 92%.

The synthetic route of 2062-98-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Ruyuan Dongyang Guangfu Co., Ltd.; Li Yitao; Lan Xiaobin; Hou Qinqing; Yang Feng; Jia Yuan; Cheng Zhen; (9 pag.)CN110818650; (2020); A;,
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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 109-85-3 as follows. name: 2-Methoxyethylamine

Ligand 1b was prepared according to the method described for 1a using 2-(methoxy)ethylamine (0.39 mL, 4.54 mmol) and 1- methyl-1H-imidazole-2-carbaldehyde (0.455 g, 4.13 mmol) and isolated as a pale yellow oil in 92% yield. 1H NMR (300 MHz, CD2Cl2): d(ppm) 8.26 (s, 1H), 7.04 (s, 1H), 6.94 (s, 1H), 3.95 (s, 3H), 3.75e3.68 (m, 2H), 3.67e3.60 (m, 2H), 3.33 (s, 3H). 13C{1H} NMR (75 MHz, CD2Cl2): d(ppm) 154.96, 143.59, 129.32, 125.12, 72.53, 61.64, 58.86, 35.46. FT-IR (cm 1): 2875m, 1650s (nC]N), 1518w, 1475m, 1437m, 1366w, 1287m, 1236w, 1191w, 1118s, 1026w, 955w, 919m, 802m, 757m, 708m, 690m, 558w, 473w.

According to the analysis of related databases, 109-85-3, the application of this compound in the production field has become more and more popular.

Reference:
Article; Boudier, Adrien; Breuil, Pierre-Alain R.; Magna, Lionel; Olivier-Bourbigou, Helene; Braunstein, Pierre; Journal of Organometallic Chemistry; vol. 718; (2012); p. 31 – 37,7;; ; Article; Boudier, Adrien; Breuil, Pierre-Alain R.; Magna, Lionel; Olivier-Bourbigou, Helene; Braunstein, Pierre; Journal of Organometallic Chemistry; vol. 718; (2012); p. 31 – 37;,
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Reference of 4342-46-5, 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. 4342-46-5, name is 4-Methoxycyclohexanamine belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

To a solution of 0.25 g (0.793 mmol) of 2,6-Difluoro-4-(3,6,6-trimethyl-4-oxo-4,5,6,7-tetrahydro-indazol-1-yl)-benzonitrile in DMSO (5 mL) was added 0.225 g (1.7446 mmol) DIEA and 0.186 g (1.438 mmol) of crude 4-Methoxy-cyclohexylamine. This was stirred at 100 C. for 18 hours and then poured into 25 mL water and extracted 3 times with CH2Cl2. The organic layers were dried over Na2SO4, concentrated and purified via chromatography (50% EtOAc/Hex) to give 0.163 g of 2-Fluoro-6-(4-methoxy-cyclohexylamino)-4-(3,6,6-trimethyl-4-oxo-4,5,6,7-tetrahydro-indazol-1-yl)-benzonitrile (48.5% yield). LCMS (m/z): M+H=425.2.

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, 4-Methoxycyclohexanamine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Huang, Kenneth He; Ommen, Andy J.; Barta, Thomas E.; Hughes, Philip F.; Veal, James; Ma, Wei; Smith, Emilie D.; Woodward, Angela R.; McCall, W. Stephen; US2008/269193; (2008); A1;,
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Reference of 41789-95-1,Some common heterocyclic compound, 41789-95-1, name is 1-(3-Methoxyphenyl)-N-methylmethanamine, molecular formula is C9H13NO, 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: To a solution of 1,4-bis(bromomethyl)benzene (1 mmol) in anhydrous acetonitrile (10 mL) was added potassium carbonate (3 mmol) and the corresponding secondary amine (2.2 mmol). The reaction mixture was heated at reflux for 3 h. The resulting mixture was diluted with water (20 mL) and extracted with ethyl acetate (15 mL) three times. The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, and concentrated in vacuo. The crude was purified by column chromatography with methanol/dichloromethane (150:1, v/v) to give the title compound as a colorless liquid or a white solid.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-(3-Methoxyphenyl)-N-methylmethanamine, its application will become more common.

Reference:
Article; Bai, Renren; Liang, Zhongxing; Yoon, Younghyoun; Liu, Shuangping; Gaines, Theresa; Oum, Yoonhyeun; Shi, Qi; Mooring, Suazette Reid; Shim, Hyunsuk; European Journal of Medicinal Chemistry; vol. 118; (2016); p. 340 – 350;,
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Application of 6487-99-6, These common heterocyclic compound, 6487-99-6, name is 2-(3-Methylphenoxy)ethylamine, 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 solution of Example IB (25 mg, 0.08 mmol) in N,N-dimethylformamide (1.0 mL) was treated with a solution of 2-(3H-[l ,2,3]triazolo[4,5-]pyridin-3-yl)- l, 1 ,3,3- tetramethylisouronium hexafluorophosphate(V) (35 mg, 0.09 mmol) in N,N-dimethylformamide (0.5 mL). Then a solution of 2-(m-tolyloxy)ethanamine (12 mg, 0.08 mmol) in N,N- dimethylacetamide (0.15 mL) was added followed by N,N-diisopropylethylamine (0.037 mL, 0.21 mmol). The reaction was shaken at ambient temperature overnight and purified by HPLC (2-coupled C8 5 mupiiota 100 A columns 30 mm x 75 mm each, flow rate of 50 mL/minute, 5-90% gradient of acetonitrile in buffer (0.1 % trifluoroacetic acid in water)) to provide the title compound. JH NMR (400 MHz, DMSO-Patent; CALICO LIFE SCIENCES LLC; ABBVIE INC.; MARTIN, Kathleen, Ann; SIDRAUSKI, Carmela; PLIUSHCHEV, Marina, A.; FROST, Jennifer, M.; TONG, Yunsong; XU, Xiangdong; SHI, Lei; ZHANG, Qingwei, I.; XIONG, Zhaoming; SWEIS, Ramzi, Farah; DART, Michael, J.; MURAUSKI, Kathleen; (288 pag.)WO2019/90074; (2019); A1;,
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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. 450-88-4 name is 1-Bromo-4-fluoro-2-methoxybenzene, 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. 450-88-4

Intermediate Example Int20.014-(4-bromo-3-methoxyphenoxy)-1 -methylpiperidine To a stirred suspension of sodium hydride (1.76 g; 60% w/w sodium hydride in oil) in DMF (55 mL) was added 1 -methylpiperidin-4-ol (3.37 g) at 0 C. The mixture was stirred at room temperature for 30 minutes. 1 -bromo-4-fluoro-2- methoxybenzene (3.0 g) was added and the mixture was stirred at 100 C for 1 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silica- gel chromatography gave 3.65 g of the title compound.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1-Bromo-4-fluoro-2-methoxybenzene, and friends who are interested can also refer to it.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; SCHULZE, Volker; KOSEMUND, Dirk; SCHIROK, Hartmut; BADER, Benjamin; LIENAU, Philip; WENGNER, Antje Margret; BRIEM, Hans; HOLTON, Simon; SIEMEISTER, Gerhard; PRECHTL, Stefan; KOPPITZ, Marcus; STOeCKIGT, Detlef; PRIEN, Olaf; WO2011/157688; (2011); A1;,
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