Ethers-buliding-blocks

Electric Literature of 458-52-6, These common heterocyclic compound, 458-52-6, name is 2-Fluoro-4-methoxyaniline, 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.

Step C 2-Fluoro-4-methoxyphenyl isocyanate A solution of 8.8 grams (0.062 mole) of 2-fluoro-4-methoxyaniline in 70 mL of toluene was stirred, and a solution of 12.3 grams (0.062 mole) of trichloromethyl chloroformate in 30 mL of toluene was added dropwise. Upon completion of addition, the reaction mixture was warmed to reflux, where it was stirred for about 18 hours. After this time the reaction mixture was cooled and concentrated under reduced pressure, yielding about 10.4 grams of 2-fluoro-4-methoxyphenyl isocyanate. The product was used immediately in the next reaction.

The synthetic route of 458-52-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; FMC Corporation; US5399543; (1995); A;,
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Electric Literature of 645-36-3,Some common heterocyclic compound, 645-36-3, name is 2,2-Diethoxyethanamine, molecular formula is C6H15NO2, 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 163N-(2,2-diethoxyethyl)-5-{4-[4-({[(2-fluoro-5- methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2-yl}-1H-pyrrole-3-carboxamideA mixture of 5-{4-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2- yl}-1H-pyrrole-3-carboxylic acid (500mg, 1.12mmol), HATU (467mg, 1.23mmol) and N,N- diisopropylethylamine (322mg, 2.5mmol) in anhydrous DMF (10ml) was stirred at room temperature for 10 minutes, followed by addition of aminoacetaldehyde diethyl acetal (194mg, 1.46mmol). The mixture was stirred for another 10 minutes and poured into 100ml of water. The precipitates were filtered, washed with water and dried in vacuo to give N-(2,2- diethoxyethyl)-5-{4-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2- yl}-1H-pyrrole-3-carboxamide as white solid. Yield: 580mg, 92%. 1H NMR (DMSO-d6): 11.83 (br. s., 1H), 9.18 (s, 1H), 8.49 (d, J = 2.9 Hz, 1H), 8.38 (d, J = 5.6 Hz, 1H), 7.99 (dd, J = 7.9, 2.3 Hz, 1H), 7.94 (t, J = 6.0 Hz, 1H), 7.54 – 7.60 (m, 2H), 7.40 (dd, J = 3.1, 1.6 Hz, 1H), 7.10 – 7.19 (m, 4H), 7.08 (t, J = 2.2 Hz, 1H), 6.78 – 6.84 (m, 1H), 6.71 (dd, J = 5.6, 2.3 Hz, 1H), 4.56 (t, J = 5.6 Hz, 1H), 3.62 (dq, J = 9.7, 7.0 Hz, 2H), 3.47 (dq, J = 9.7, 7.0 Hz, 2H), 3.24 (t, J = 5.7 Hz, 2H), 2.28 (s, 3H), 1.11 (t, J = 7.0 Hz, 6H) LR MS (ES+): 562 (MH+) LR MS (ES-): 560 (M-H)

The synthetic route of 645-36-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ALLERGAN, INC.; GUO, Xialing; ZHU, Zhen; WO2015/69287; (2015); A1;,
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Application of 1758-46-9,Some common heterocyclic compound, 1758-46-9, name is 2-Phenoxyethylamine, molecular formula is C8H11NO, 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.

b) 2-Methyl-2-{[1-(2-phenoxy-ethylamino)-naphthalene-2-carbonyl]-amino}-propionic acid3 mg copper(l)iodide, 127 mg potassium phosphate and 105 mg 2-[(1-bromo- naphthalene-2-carbonyl)-amino]-2-methyl-propionic acid methyl ester were placed in a reaction vial, which was evaporated and backfilled with argon three times. A solution of 62 mg 2-phenoxyethylamine and 12 mg N,N-diethylsalicylaminde in 0.5 ml of dry DMF was then added via septum. Under inert conditions the reaction mixture was heated to 1000C for 20 h. It was then diluted with ethyl acetate and water, the pH was adjusted to neutral, the layers were separated and the aqueous layer was extracted with ethyl acetate twice. The combined organic layers were dried over magnesium sulphate and evaporated. After purification by RP-HPLC 12 mg 2-methyl-2-{[1-(2-phenoxy- ethylamino)-naphthalene-2-carbonyl]-amino}-propionic acid were obtained.C23H24N2O4 (392.46), LCMS (ESI): 393.16 (MH+).

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

Reference:
Patent; SANOFI-AVENTIS; WO2008/409; (2008); A1;,
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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. 171290-52-1, name is 3,5-Dimethoxyphenylacetylene, This compound has unique chemical properties. The synthetic route is as follows., SDS of cas: 171290-52-1

Formula 7 of the azide compound (300 mumol), alkynyl (750 mumol), CuSO4 (9.6 mg, 60 mumol) and Na. An ascorbate (60.0 mg, 300 mumol) 1: was dissolved in 1 t-BuOH / H2O (3 mL). The mixture was stirred at room temperature for 2 hours. After the reaction was completed, the mixture was filtered of and washed using H2O (70 mL) (solid A). The filtrate was extracted with EtOAc (3 ¡Á 70 mL). The combined organic extracts were then dried using anhydrous MgSO4, filtered and concentrated by rotaryevaporation (residue B). It was combined and the solid residue A and B, was purified by column chromatography to give the compound of formula 2 and 3. Following the general method for the general formula 2, 1: 1 t-BuOH / H2O (3 mL) in the compound 7d (85.3 mg, 300 mumol),1-ethynyl -3,5-dimethoxy-benzene (121 mg, 750 mumol), CuSO4 (9.6 mg, 60 mumol) and Na. Using ascorbate (60.0 mg, 300 mumol) was prepared in the desired compound. The reaction mixture was stirred at 40 for 47 hours, was purified by column chromatography (5: 1 hexane / EtOAc ? 20: 1 CH2Cl2 / MeOH) to yield a compound 2d as a brown solid using (98.8mg, 74%) .

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 171290-52-1.

Reference:
Patent; EWHA UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION; YOO, JAE SANG; SONG, DOO HUI; (33 pag.)KR2015/134731; (2015); A;,
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Related Products of 3616-56-6,Some common heterocyclic compound, 3616-56-6, name is 2,2-Diethoxy-N,N-dimethylethanamine, molecular formula is C8H19NO2, 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.

1 Concentrated hydrochloric acid plus purified water (1) after dilution,Transfer to a 10L reactorWarm up to about 30C. Under nitrogen protection,The dimethylamino acetaldehyde diethyl acetal was slowly added dropwise to the diluted hydrochloric acid,About 2 hours after the addition,The reaction was stirred overnight at about 30C. MakeBefore use, neutralize to neutral with solid sodium carbonate,Inorganic salts are filtered away.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2,2-Diethoxy-N,N-dimethylethanamine, its application will become more common.

Reference:
Patent; Hangzhou East China Pharmaceutical Group New Drug Institute Co., Ltd.; Hangzhou China-USA East China Pharmaceutical Co., Ltd.; Yin Jianming; Lv Yubin; Li Bangliang; (13 pag.)CN107141261; (2017); A;,
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These common heterocyclic compound, 7025-06-1, name is 1-Bromo-2-phenoxybenzene, 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. Recommanded Product: 1-Bromo-2-phenoxybenzene

30 g of 1-bromo-2-phenoxybenzene was dissolved in 300 ml of anhydrous tetrahydrofuran under a nitrogen atmosphere,-78 ¡ã CRespectively.to the next,48 ml of 2.5 M-butyllithium was slowly added dropwise.After completion of the dropwise addition, stirring was performed for 30 minutes,2-Bromofluorene 31.2 gWas dissolved in 200 ml of absolute tetrahydrofuran and then slowly added dropwise.The reaction solution was maintained at -78 ¡ã C for about 1 hour, then warmed to room temperature and stirred for 12 hours.The reaction was terminated by adding diluted hydrochloric acid to the reaction solution, followed by liquid fraction extraction using methylene chloride.The obtained organic layer was dried with magnesium sulfate, filtered, and then distilled under reduced pressure. to the next,After adding 400 ml of acetic acid, a catalytic amount of hydrochloric acid was added dropwise, followed by stirring at a reflux temperature for 12 hours.After completion of the reaction, the reaction mixture was cooled to obtain a solid,After filtration, 32.0 g of compound AA was obtained by column chromatography.

The synthetic route of 1-Bromo-2-phenoxybenzene has been constantly updated, and we look forward to future research findings.

Reference:
Patent; LG CHEM, LTD.; HONG, WAN PYO; KWON, HYOK JOON; KIM, KONG KYEOM; KIM, MIN JUN; KIM, SEONG SO; (79 pag.)KR2017/59910; (2017); A;,
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Adding a certain compound to certain chemical reactions, such as: 1663-61-2, name is (Triethoxymethyl)benzene, 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 1663-61-2, HPLC of Formula: C13H20O3

General procedure: The starting hydrazide 4, 8e-i (10 mmol) was added to a mixture of the appropriate triethyl orthoester (10 mol) and 0.1 g p-TsOH in 20 mL of xylene and kept under reflux for 3 h (TLC). After cooling, the mixture was washed with water (30 mL), dried over MgSO4 and then concentrated under reduced pressure. The oily residue was subjected to column chromatography (silica gel, eluent: hexane/AcOEt, 1:2 v/v) or crystallised from benzene/hexane mixture.

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, (Triethoxymethyl)benzene, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Kudelko, Agnieszka; Zielin?ski, Wojciech; Ejsmont, Krzysztof; Tetrahedron; vol. 67; 40; (2011); p. 7838 – 7845;,
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Synthetic Route of 106854-77-7, The chemical industry reduces the impact on the environment during synthesis 106854-77-7, name is 1-Bromo-4-(2,2,2-trifluoroethoxy)benzene, I believe this compound will play a more active role in future production and life.

Step 7: 1 -Benzyl-N,4-dimethyl-N-neopentyl-3-(4-(2,2,2-trifluoroethoxy)phenyl)-5- (trifluoromethyl)-1 H-pyrrole-2-carboxamide (SC-260)Under an nitrogen atmosphere 1 -benzyl-N,4-dimethyl-N-neopentyl-3-(4,4,5,5-tetramethyl-1 3,2- dioxaborolan-2-yl)-5-(trifluoromethyl)-1 H-pyrrole-2-carboxamide (106 mg, 0.216 mmol) was dissolved in DMF (1 mL) and L1OH (4 mg, 0.216 mmol), bis(tri-tert-butylphosphine)palladium (0) (6 mg, 0.014 mmol) and 1-bromo-4-(2,2,2-trifluoroethoxy)benzene (50 mg, 0.196 mmol) were subsequently added. The reaction mixture was stirred at 80C under microwave irridation for I h. The mixture was cooled to RT and the reaction was stopped by addition of 1 M NaOH solution (2 mL). The crude product was extracted with EtOAc (2×3 mL) and the combined organic layers were washed with water (3×1 mL), dried over Na2SO4, filtered and the solvent was removed under reduced pressure. The crude mass was purified by flash chromatography to give SC-260 (95 mg, 89.7 %).

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, 1-Bromo-4-(2,2,2-trifluoroethoxy)benzene, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; GRUeNENTHAL GMBH; SCHUNK, Stefan; REICH, Melanie; STEINHAGEN, Henning; DAMANN, Nils; SKONE, Philip; HAMLYN, Richard; KIRBY, Robert; ROGERS, Marc; SUTTON, Kathy; WO2014/32801; (2014); A1;,
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910251-11-5, name is Potassium trifluoro(methoxymethyl)borate, 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. Computed Properties of C2H5BF3KO

In a 4 mL vial were combined NiCl2 dimethoxyethane adduct (3.4 mg, 0.015 mmol, 0.12 equivalents) and 4,4′-di-ter/-butyl-2,2′-dipyridyl (4.15 mg, 0.015 mmol, 0.12 equivalents) in /V,/V-di methyl acetamide (1.0 mL). Example 1G (60 mg, 0.13 mmol, 1.0 equivalents), potassium trifluoro(methoxymethyl)borate (58 mg, 0.39 mmol, 3.0 equivalents), cesium carbonate (105 mg, 0.32 mmol, 2.5 equivalents) and bis[3,5-difluoro-2-[5-(trifluoromethyl)-2- pyridyl] phenyl] iridium(l+); 2-(2-pyridyl)pyridine; hexafluorophosphate (4.3 mg, 0.004 mmol, 0.03 equivalents) were added, followed by dioxane (1.0 mL). The reaction was irradiated overnight using a 450 nm LED photoreactor. The reaction was filtered and purified by reverse-phase preparative HPLC on a Waters XBridge C8 5 pm column (75 mm x 30 mm). A gradient of methanol (A) and 25 mM ammonium bicarbonate buffer (pH 10) in water (B) was used, at a flow rate of 40 mL/minute (0- 0.5 minutes 15% A, 0.5-8.0 minutes linear gradient 15-100% A, 8.0-9.0 minutes 100% A, 9.0- 9.1 minutes linear gradient 100-15% A, 9.1-10.0 minutes 15% A) to afford 5-[3-(benzyloxy)-l- fluoio-7-(methoxymethyl)naphthalen-2-yl]- 1 / 2,5-thiadiazolidinc- 1, 1,3-trione (52.4 mg, 94% yield).

The synthetic route of 910251-11-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; CALICO LIFE SCIENCES LLC; ABBVIE INC.; FARNEY, Elliot; SHIROODI, Roohollah, Kazem; XIONG, Zhaoming; ZHANG, Qingwei, I.; O’CONNOR, Matthew; HALVORSEN, Geoff; ZHAO, Hongyu; BAUMGARTNER, Christina; FROST, Jennifer, M.; KYM, Phil; ABBOTT, Jason, R.; BOGDAN, Andrew; ECONOMOU, Christos; WANG, Xueqing; (375 pag.)WO2019/246513; (2019); A1;,
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Application of 38336-04-8,Some common heterocyclic compound, 38336-04-8, name is 2-(Benzyloxy)-1-ethanamine, 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.

To a solution of tert-butyl 4-((6-bromopyridin-3-yl)oxy)piperidine-1-carboxylate (200 mg, 0.280 mmol), 2-(benzyloxy)ethanamine (50.8 mg, 0.336 mmol), sodium 2-methylpropan-2-olate (81 mg, 0.840 mmol), and 2-(dicyclohexylphosphino)-2?,4?,6?-triisopropylbiphenyl (13.34 mg, 0.028 mmol) in THF (5 mL) was added tris(dibenzylideneacetone)dipalladium(0) (25.6 mg, 0.028 mmol). The reaction mixture was stirred at 70 C. for 15 h before cooling to RT and partitioning with water (10 mL) and EtOAc (10 mL¡Á3). The combined organic layers were washed with water (20 mL¡Á3), dried with anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by prep-TLC (1/1 EtOAc/petroleum ether) to provide the title compound.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-(Benzyloxy)-1-ethanamine, its application will become more common.

Reference:
Patent; BAO, JIANMING; GAO, XIAOLEI; KNOWLES, SANDRA L.; LI, I, CHUNSING; LO, MICHAEL MAN-CHU; MAZZOLA, Jr., ROBERT D.; ONDEYKA, DEBRA L.; STAMFORD, ANDREW W.; ZHANG, FENGQI; (214 pag.)US2017/183342; (2017); A1;,
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