Author: Jessica.F

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. 6298-96-0, name is 1-(4-Methoxyphenyl)ethylamine belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Safety of 1-(4-Methoxyphenyl)ethylamine

A slurry of sodium triacetoxyborohydride (4.54 Kg, 21.4 mol.) in dichloromethane (22 Liters) is treated with 6,7-dihydro-8(5/-/)-quinolinone (1.8 Kg, 12.3 mol.) followed by (1S)-1-[4-(methyloxy)phenyl]ethanamine (1.8 Kg, 11.9 mol).) and the reaction was allowed to stirr vigorously at 22 0C for 24 hrs. The reaction is quenched with 1 N NaOH (aprox 27 Liters) to achieve pH 8 in the aqueous layer. The phases were separated and the organic phase was treated with 1N sodium hydroxide ( aprox 3.5 Liters) to achieve pH 11 in the aqueous layer. The phases again separated. The dichloromethane solution was then concentrated to minimum volume and treated with heptane (18 Liters). The volume again concentrated to aprox 9 Liters. Precipitation occurred upon cooling to 22 0C. The suspension was further cooled to 00C. and filtered. Solids were dried at ambient temperature under vacuum with nitrogen to give (8S)-N-{(1S)-1-[4-(methyloxy)phenyl]ethyl}-5,6,7,8-tetrahydro-8- quinolinamine. (2.18 Kg, 63%) 1H NMR (400 MHz, DMSO-D6) delta ppm 8.36 (m, 1 H) 7.44 (m, 1 H) 7.29 (m, 2 H) 7.15 (m, 1 H) 6.83 (m, 2 H) 4.00 (m, 1 H) 3.70 (s, 3 H) 3.59 – 3.64 (m, 1 H) 2.66 (m, 1 H) 2.64 (s, 1 H) 2.53 (s, 1 H) 1.76 (s, 1 H) 1.64 (s, 1 H) 1.50 (s, 1 H) 1.39 (s, 1 H) 1.24 (m, 3 H)

The synthetic route of 6298-96-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SMITHKLINE BEECHAM CORPORATION; WO2007/87549; (2007); A2;,
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Related Products of 7664-66-6,Some common heterocyclic compound, 7664-66-6, name is 4-Isopropoxyaniline, 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.

Step 4: 8-Hydroxy-2-(4-isopropoxy-phenyl)-2-aza-spiror4.51decan-l-one4-Isopropoxy-phenylamine (11.3 g) was added to a solution of 4-hydroxy-l-(2-methoxy- ethyl)-cyclohexanecarboxylic acid ethyl ester (11.5 g) in toluene (361 ml). The mixture was stirred for 10 minutes at RT. Then, dimethylaluminiumchloride (0.9 M in hexane, 99 ml) was added dropwise and the reaction mixture was heated to reflux for 4 h. The mixture was then cooled to 0C, water (50 ml) was added dropwise then AcOEt (300 ml). The mixture was stirred further 30 minutes, more AcOEt was added, the layers were then separated, the organic layer was dried over MgS04, filtered and the solvent was evaporated off . The crude product was triturated with diethyl ether/heptane to give the title compound as a mixture of cis/trans isomers as brown solid (14.3 g) which was used directly in the next step. MS (m/e): 304.190 [MH+].

The synthetic route of 7664-66-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HUNZIKER, Daniel; NEIDHART, Werner; WO2012/130679; (2012); A1;,
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Synthetic Route of 1535-75-7, The chemical industry reduces the impact on the environment during synthesis 1535-75-7, name is 2-(Trifluoromethoxy)aniline, I believe this compound will play a more active role in future production and life.

To a stirred solution of 2, 4-dichloro-5-methoxypyrimidine (5 g, 28.08 mmol) in tertiary butyl alcohol (35 mL) under argon atmosphere were added 2-(trifluoromethoxy) aniline (4 g, 22.47 mmol) and diisopropylethylamine (35 mL) at RT. The reaction mixture was stirred at 160 C for 48 h in a sealed tube. After completion of the reaction (monitored by TLC), the volatile components were removed in vacuo. The crude material was purified by silica gel column chromatography using 10% EtOAc:hexanes to afford 2-chloro-5-methoxy- N-(2-(trifluoromethoxy) phenyl) pyrimidin-4-amine (2 g, 22%) as a colorless syrup. ?H-NMR (CDC13, 400 MHz): oe 8.64 (d, 1H), 7.79 (s, 1H), 7.72 (br s, 1H), 7.38 (t, 1H), 7.30-7.27 (m, 1H), 7.10-7.07 (m, 1H), 4.00 (s, 3H); LC-MS: 320.3 (M+1); (column; X Select CSH C-18 (50 x 3.0 mm, 3.5 .im); RT 4.63 mm. 0.05% Aq TFA: ACN; 0.80 ml/min); TLC: 15% EtOAc:hexanes (Rf 0.3).

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-(Trifluoromethoxy)aniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; FORUM PHARMACEUTICALS INC.; BURNETT, Duane, A.; BURSAVICH, Matthew, Gregory; MCRINER, Andrew, J.; WO2015/66696; (2015); A1;,
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Some common heterocyclic compound, 19056-40-7, name is 4-Bromo-3-methoxyaniline, molecular formula is C7H8BrNO, 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: 4-Bromo-3-methoxyaniline

POCl3 (5.07 ml, 54.4 mmol) was added to a mixture of 4-bromo-3-methoxyaniline (10 g, 49.5 mmol) and malonicacid (5.15 g, 49.5 mmol) with thorough mixing, and the solution was then heated to 105°C. After 5 min, the reactionbegan to bubble vigorously and eventually formed a hard foam, and heating was continued for 1 h. After cooling, water(200 mL) was added, and the mixture was stirred for 30 min. The solid was filtered off and washed with water. 2N NaOH(300 mL) was added to the solid, and stirring was continued overnight. The remaining solid was filtered off. EtOH (5 mL)was then added to the filtrate, and the basic layer was then acidified with concentrated HCl to pH 2. The resulting solidwas then filtered off and washed with water. The solid was then transferred to a flask, and the remaining water wasremoved by stripping off EtOH (200 mL x 2). The solid was then further dried under high vacuum for 15 h to yield 8.75g (66percent) of the title compound as an off-white solid. LRMS ESI+ (M+H)+ 270.2/272.2

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 19056-40-7, its application will become more common.

Reference:
Patent; Merck Sharp & Dohme Corp.; MSD Italia S.r.l.; MCCAULEY, John, A.; LIVERTON, Nigel, J.; HARPER, Steven; MCINTYRE, Charles, A.; RUDD, Michael, T.; (73 pag.)EP2268285; (2018); B1;,
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Electric Literature of 7252-83-7, A common heterocyclic compound, 7252-83-7, name is 2-Bromo-1,1-dimethoxyethane, molecular formula is C4H9BrO2, 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.

4-hydroxythiobenzamide (30.64 g, 0.20 mol) and 2-bromo-1,1-dimethoxyethane (31.00 g, 0.20 mol) were stirred in ethanol (600 mL) at room temperature.P-toluenesulfonic acid (34.44 g, 0.20 mol) was added to the reaction solution.Heat to 90C for 24 hours.After the reaction was completed, it was cooled to room temperature, the solvent was distilled off under reduced pressure, water (200 mL) was added, and the pH was adjusted to 8 with saturated sodium bicarbonate solution.Dichloromethane (200 mL x 3) was extracted and the organic phases were combined and concentrated by evaporation under reduced pressure to give a yellow solid (21.3 g, 60%).

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; SUNSHINE LAKE PHARMA CO., LTD.; ZHANG, YINGJUN; ZHANG, JIANCUN; WANG, XIAOJUN; LIN, RUNFENG; CAO, SHENGTIAN; WANG, ZHAOHE; LI, JING; (226 pag.)TWI607995; (2017); B;,
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Related Products of 22236-10-8, 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. 22236-10-8 name is 4-(Difluoromethoxy)aniline, 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.

To a solution of 5-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylic acid (XLIX) (1 g, 3.08 mmol), 4-(difluoromethoxy)aniline (XLI) (0.420 mL, 3.38 mmol) and HATU (1.286 g, 3.38 mmol) in DMF (10 mL) was added DIPEA (1.343 mL, 7.69 mmol). The reaction mixture was stirred at 60 C. for 2 h. Water was then added to the reaction mixture and extracted with EtOAc. The organic layer was washed with water, saturated aqueous NaHCO3 and brine. The organic layer was dried, filtered and concentrated. The crude product was triturated in MeOH and the resulting solid filtered to give 5-bromo-N-(4-(difluoromethoxy)phenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxamide as a white solid (CXLIII) (1.26 g, 2.70 mmol, 88% yield). ESIMS found C20H18BrF2N3O3 m/z 466.1 (M+H).

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; Samumed, LLC; KC, Sunil Kumar; Mak, Chi Ching; Mittapalli, Gopi Kumar; Hofilena, Brian Joseph; Eastman, Brian Walter; Cao, Jianguo; Chiruta, Chandramouli; Bollu, Venkataiah; (145 pag.)US2019/263821; (2019); A1;,
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Adding a certain compound to certain chemical reactions, such as: 402-07-3, name is 4-Bromo-3-methoxybenzotrifluoride, 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 402-07-3, Recommanded Product: 402-07-3

General procedure: A microwave vial was charged with N-(4-methoxybenzyl)-N-(thiazol-2-yl)-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonamide (28) (0.100 g, 0.24 mmol), xantphos (0.028 g, 0.048 mmol), 4-bromo-3-methoxybenzonitrile (0.051 g, 0.24 mmol), Pd2(dba)3 (0.022 g, 0.024 mmol) and sodium tert-butoxide (0.046 g, 0.48 mmol). The mixture was diluted with toluene (2.5 mL), purged with nitrogen, and heated at 130 C in the microwave for 30 min. After completion, the mixture was cooled to room temperature and trifluoroacetic acid (1.0 mL) was added. After stirring for 45 min at room temperature, the reaction was filtered through a plug of Celite, washing with DCM 10 mL). The filtrate was concentrated and purified by reverse-phase preparative HPLC using 0.1% TFA in CH3CN/H2O, gradient 25% to 90% over 15 min to provide 4-(4-cyano-2-methoxyphenyl)-N-(thiazol-2-yl)-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonamide 10 as a salt with trifluoroacetate (0.073 g, 0.14 mmol, 56 % yield) as an orange 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:
Article; La, Daniel S.; Peterson, Emily A.; Bode, Christiane; Boezio, Alessandro A.; Bregman, Howard; Chu-Moyer, Margaret Y.; Coats, James; DiMauro, Erin F.; Dineen, Thomas A.; Du, Bingfan; Gao, Hua; Graceffa, Russell; Gunaydin, Hakan; Guzman-Perez, Angel; Fremeau, Robert; Huang, Xin; Ilch, Christopher; Kornecook, Thomas J.; Kreiman, Charles; Ligutti, Joseph; Jasmine Lin, Min-Hwa; McDermott, Jeff S.; Marx, Isaac; Matson, David J.; McDonough, Stefan I.; Moyer, Bryan D.; Nho Nguyen, Hanh; Taborn, Kristin; Yu, Violeta; Weiss, Matthew M.; Bioorganic and Medicinal Chemistry Letters; vol. 27; 15; (2017); p. 3477 – 3485;,
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Adding a certain compound to certain chemical reactions, such as: 1462-37-9, name is ((2-Bromoethoxy)methyl)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 1462-37-9, Safety of ((2-Bromoethoxy)methyl)benzene

[00405] Step A: To a solution of ((2-bromoethoxy)methyl)benzene (1.34 mL, 7.6 mmol) in diethyl ether (20 mL) were added magnesium turnings (0.185 g, 7.6 mmol) and the mixture was heated at reflux for 30 min. The mixture was cooled to -20 0C, and a solution of (4-(lH-pyrazol-5-ylamino)pyirolo[l,2-f][l,2,4]triazin-2-yichi4- fiuorophenyl)methanone (700 mg, 2.17 mmol) in THF (20 mL) was added. The mixture was stirred at -20 °C for 1 hour, then aqueous ammonium chloride was added, and the precipitated solid was collected by filtration, washing with water. The crude solid was purified using chromatography on silica gel eluting with 2-8percent MeOH/DCM to afford 1 -(4-( 1 H-pyrazol-5-ylamino)pyrrolo [ 1 ,2-fJ [ 1 ,2,4]triazin-2-yl)-4- (benzyloxy)-l-(4-fluorophenyl)butan-l-ol (625 mg, 85percent).

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; AMBIT BIOSCIENCES CORPORATION; ABRAHAM, Sunny; CHAO, Qi; HADD. Michael, J.; HOLLADAY, Mark, W.; LIU, Gang; NAMBU, Mitchell, D.; SETTI, Eduardo; WO2010/2472; (2010); A1;,
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74137-36-3, name is 1,3-Dibromo-5-methoxybenzene, 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. name: 1,3-Dibromo-5-methoxybenzene

General procedure: Typically, TDPP (200 mg, 0.27 mmol), dibromobenzene derivatives 0.11 mmol, anhydrous Cs2CO3(200 mg, 0.61 mmol), PivOH (7.9 mg, 0.08 mmol), Pd2(dba)3 (4.00 mg, 1.5 mol%), tris(o-methoxyphenyl)phosphine (3.08 mg, 3 mol%) were successively added into a Schlenk tube. The tube was purged by three repetitions of vacuum and argon filling. Then, 5 mL anhydrous toluene was added via syringe.The reaction solution was deoxygenated using three freeze-vacuum-thaw cycles, and then rigorouslystirred at 100 C for 24 h under argon atmosphere. Removal of the toluene by rotary evaporatoraorded the crude product, which was then purified by chromatogragh column (CC) on silica gelusing a mixture of CH2Cl2 and hexane as eluent, giving the target molecules Ms1~9.

The synthetic route of 74137-36-3 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Liu, Hui; Zhang, Xiao-Feng; Cheng, Jing-Zhao; Zhong, Ai-Guo; Wen, He-Rui; Liu, Shi-Yong; Molecules; vol. 24; 9; (2019);,
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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. 107622-80-0, name is (4-Phenoxyphenyl)methanamine, A new synthetic method of this compound is introduced below., Computed Properties of C13H13NO

Example 71 3-Hydroxy-4-methoxy-N-(4′-phenoxybenzyl)picolinamide: The procedure of Example 39 was repeated, except that 4-benzyloxyaniline hydrochloride was changed to 4-phenoxybenzylamine. Thus, the title compound was prepared.

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; Meiji Seika Kaisha, Ltd.; EP1134214; (2001); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem