Author: Jessica.F

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. 33311-29-4, name is 4-(2-Methoxyethoxy)aniline, A new synthetic method of this compound is introduced below., Safety of 4-(2-Methoxyethoxy)aniline

4-(2-Methoxyethoxy)aniline (500mg) was added to acetic anhydride (2.38g) and the mixture was cooled down to 10C. HN03 (65% in water, 0.62ml) was added slowly in order to keep the temperature of the reaction mixture below 15C. After the end of the addition, the reaction mixture was allowed to warm to RT over 1 h, was quenched with ice-cold water and stirred for 10min. The resulting suspension was filtered off and dried in high vacuo. The resulting yellow powder was dissolved in dioxane (1.4ml) , treated with 6N HCl (1 .4ml_) and the reaction mixture was stirred at 70C for 3h. After cooling down to RT, water was added and the pH was adjusted to 10 with 1 M NaOH. The layers were separated and the aq. phase was extracted with EA. The combined org. layers were washed with brine, dried (Na2SO4) and evaporated in vacuo to afford 303mg of yellow solid. LC-MS (B): tR = 0.99min; [M+H]+: 213.05.

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; ACTELION PHARMACEUTICALS LTD; CAROFF, Eva; KELLER, Marcel; KIMMERLIN, Thierry; MEYER, Emmanuel; WO2013/114332; (2013); A1;,
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Application of 52189-63-6, These common heterocyclic compound, 52189-63-6, name is 1-Fluoro-3,5-dimethoxybenzene, 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.

Weigh 1.5g of 1-fluoro-3,5-dimethoxybenzene and dissolve it with CH2Cl2.40 ml of BBr3/CH2Cl2 solution was added dropwise under ice bath, and reacted at room temperature overnight.After the end, the excess boron tribromide is quenched with methanol.Add ice water, stir, distill off most of the CH2Cl2 under reduced pressure, and extract the aqueous phase three times with ethyl acetate.The ethyl acetate layer was combined, dried with saturated brine, and EtOAc evaporated.The product was obtained in an amount of 1.2 g, which was used without further purification.

Statistics shows that 1-Fluoro-3,5-dimethoxybenzene is playing an increasingly important role. we look forward to future research findings about 52189-63-6.

Reference:
Patent; Cai Pei; Xiao Zuoqi; Ouyang Bo; Pan Tao; Zheng Yi; (7 pag.)CN109678915; (2019); A;,
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Related Products of 51344-14-0, 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. 51344-14-0, name is N,N-Dimethyl-2-(p-tolyloxy)ethanamine belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

58.9 g (0.495 mol) of potassium bromide,Hydrogen peroxide 60 ml,Water 60 ml and 150 ml of chloroform were added to a liter of three bottles,Drop under ice bath32 ml concentrated sulfuric acid,Drop finished, remove the ice bath,Add 4- (2-dimethylaminoethoxy) toluene134 g (0.75 mol),The reaction solution was refluxed under light for 2 h,After completion of the reaction, the organic layer was separated, dried over anhydrous sodium sulfate, And the crude product was distilled under reduced pressure to give 185 g of a pale yellow liquid in a yield of 96%.

The synthetic route of N,N-Dimethyl-2-(p-tolyloxy)ethanamine has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Anhui Cheng Lian Pharmaceutical Technology Co., Ltd.; Liu Hui; (5 pag.)CN106748821; (2017); 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. 768-70-7, name is 3-Ethynylanisole, This compound has unique chemical properties. The synthetic route is as follows., name: 3-Ethynylanisole

General procedure: To a stirred solution of alkyne (12mmol, 1.2equiv) in 50mL DCM was added copper(I)-thiophene-2-carboxylate (CuTc, 95mg, 0.5mmol, 0.05equiv). The solution was cooled to 0C and treated dropwise with a solution of 10mmol sulfonyl azide in 10mL DCM. Then, the reaction mixture was stirred a further 12h, monitored by TLC. After reaction, it was diluted with 30mL saturated NH4Cl and extracted with DCM (30mL¡Á3). The combined organics were washed with brine, dried with Na2SO4 and concentrated in vacuo. The crude product was then purified by flash chromatography (Petroleum ether/EtOAc=5:1-1:1). Subsequent recrystallization from EtOAc/Petroleum ether provided the title triazoles substrates.

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 768-70-7.

Reference:
Article; Meng, Jiang; Ding, Xiangfeng; Yu, Xingxin; Deng, Wei-Ping; Tetrahedron; vol. 72; 1; (2016); p. 176 – 183;,
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Electric Literature of 22236-10-8, 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. 22236-10-8, name is 4-(Difluoromethoxy)aniline belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

A mixture of 4-CHLORO-2-METHYL-QUINAZOLINE (450 mg, 2.52 mmol), 4- difluoromethoxy-phenylamine (0.32 ml, 2.52 mmol) and sodium acetate (248.07 mg, 3.02 mmol) in 6 mL of solvent (THF: water = 1 : 1) was stirred at 70 C for 1 h. The reaction mixture was diluted with 30 mL of ethyl acetate. It was washed with brine, dried over anhydrous NA2S04, filtered and concentrated. The crude product was purified by chromatography on silica gel with acetate and hexane (1: 5) as eluent, yielding 713 mg of title compound (94 %). H NMR (CDC13) : 7.87-7. 76 (m, 5H), 7.51 (t, J = 8.4 Hz, 1H)), 7.40 (brs, 1H), 7.19 (d, J = 8.7 Hz, 2H), 6.76-6. 27 (three single peaks, 1H), 2.71 (s, 3H).

The synthetic route of 4-(Difluoromethoxy)aniline has been constantly updated, and we look forward to future research findings.

Reference:
Patent; MYRIAD GENETICS, INC.; CYTOVIA, INC.; WO2005/3100; (2005); A2;,
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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 854391-95-0 as follows. Recommanded Product: Bis(4-methoxybenzyl)amine hydrochloride

A solution of benzaldehyde (1.00 g, 9.42 mmol)and benzylamine (1.01 g, 9.42 mmol) in PhMe (120 mL) was heated under reflux inan inert atmosphere with stirring for 16 hours. The H2O generatedwas collected in a Dean-Stark trap. The solvent was removed under vacuum andthe pale yellow oil obtained was dissolved in MeOH (60 mL) before NaBH4(2.1 g, 56.5 mmol) was added. The resulting solution was stirred overnight atroom temperature in an inert atmosphere. The reaction mixture was then treatedwith HCl (2 M, 10 mL), and the solvents were removed under reduced pressure.The solid residue was suspended in NaOH (8 M, 30 mL) and extracted with CHCl3(3 x 60 mL). The combined organic fractions were dried (MgSO4),filtered and the solvents were evaporated off to give I as a pale yellow oil. White crystalline solid (25 %). 1HNMR (300 MHz, CD3CN) d =7.40 (d, 4H), 7.00 (d, 4H), 4.12 (s, 4H), 3.70 (s, 6H).

According to the analysis of related databases, 854391-95-0, the application of this compound in the production field has become more and more popular.

Reference:
Article; Payne, Nicholas A.; Delmas, Luke C.; McDowell, Sean A.C.; Williams, Avril R.; Tetrahedron Letters; vol. 56; 37; (2015); p. 5175 – 5179;,
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Related Products of 910251-11-5, 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. 910251-11-5, name is Potassium trifluoro(methoxymethyl)borate belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

[008691 Step E: Preparation of 2-(tert-butyl)-5-(methoxymethyl)benzonitrile: Charged a thick walled glass pressure vessel with 5-bromo-2-(tert-butyl)benzonitrile (520 mg, 2.18 mmol), dicyclohexyl(2?,6?-dimethoxy- [1,1 ?-biphenyl]-2-yl)phosphine (?S-Phos?) (179 mg, 0.437 mmol), Pd(OAc)2 (49.0 mg, 0.218 mmol), potassium (methoxymethyl)trifluoroborate (664 mg, 4.37 mmol), Cs2CO3 (2.8 g, 8.7 mmol), and 1:1 dioxane/water (10 mL). Sparged with N2 for several minutes, then heated to 100 C overnight with stirring. After cooling to ambient temperature, partioned mixture between EtOAc (20 mL) and water (20 mL). Separated phases, re-extracting aqueous with EtOAc (10 mL). Combined organics were washed with brine (20 mL), dried (MgSO4), filtered, and concentrated. The crude material was purified by Biotage Flash 40 silica gel column, eluting with a gradient of 5%-10% EtOAc/hexanes. Yield: 187 mg (36%).

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; ARRAY BIOPHARMA INC.; BLAKE, James F.; BRANDHUBER, Barbara J.; HAAS, Julia; NEWHOUSE, Brad; THOMAS, Allen A.; WINSKI, Shannon L.; WO2014/78331; (2014); 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. 36449-75-9, name is 1-(2-Bromoethyl)-2-methoxybenzene, A new synthetic method of this compound is introduced below., Product Details of 36449-75-9

General procedure: To a DMF solution (3 mL) of bromide derivative, were added sodium iodide (0.05 eq) and sodium azide (1.2 eq) at 40 C. The reaction mixture was stirred for overnight. Et2O (20 mL) was added to the mixture then the organic layer was washed with water (3 ¡Á 20 mL), dried over MgSO4 and concentrated under reduced pressure to give the azide derivative. Spectroscopic data of compounds are identical to those previously reported [10].

The synthetic route of 36449-75-9 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Menendez, Christophe; Chollet, Aurelien; Rodriguez, Frederic; Inard, Cyril; Pasca, Maria Rosalia; Lherbet, Christian; Baltas, Michel; European Journal of Medicinal Chemistry; vol. 52; (2012); p. 275 – 283;,
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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. 104-92-7, name is 1-Bromo-4-methoxybenzene, This compound has unique chemical properties. The synthetic route is as follows., Safety of 1-Bromo-4-methoxybenzene

Pd(OAc)2/2-Catalyzed Amination of Aryl and Heteroaryl Bromides (Table 3).General Procedure: An oven-dried Schlenk flask equipped with a magnetic stirring bar was charged with Pd(OAc)2 (x mol %, see Table 3) and NaO-t-Bu (1.5 mmol). Amine (1.2 mmol) and aryl bromide (1.0 mmol) were also added at this time, if they were solids. The flask was capped with a rubber septum, evacuated and then flushed with argon. This cycle was repeated three times. Ligand 2 (2x mol %, see Table 3) was then added via syringe from a stock solution. Aryl bromide (if a liquid, 1.0 mmol), amine (if a liquid, 1.2 mmol) and toluene (3 mL) were then successively added by syringe. The reaction mixture was heated at the temperature indicated in Table 3 until the starting material had been completely consumed as judged by TLC (15-20 hours). The mixture was then cooled to room temperature, adsorbed onto silica gel and then purified by column chromatography (hexanes/ethyl acetate as eluent).

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 104-92-7.

Reference:
Patent; Iowa State University Research Foundation, Inc.; US7385058; (2008); B1;,
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Application of 7252-83-7, The chemical industry reduces the impact on the environment during synthesis 7252-83-7, name is 2-Bromo-1,1-dimethoxyethane, I believe this compound will play a more active role in future production and life.

(1R,2S) and (1S,2R)-2-(4-chlorophenyl)-1′-(2,2-dimethoxyethyl)spiro[cyclopropane-1,3′-indolin]-2′-one To a solution of (1R,2S) and (1S,2R)-2-(4-chlorophenyl)spiro[cyclopropane-1,3′-indolin]-2′-one (135 mg, 1 mmol) in DMF (1 mL) was added KHMDS (0.5 M in THF, 1.1 mL) was dropwise at room temperature. The mixture was stirred for half an hour before adding bromoacetaldehyde dimethyl acetal (95 mg, 0.55 mmol). The mixture was warmed to 50 C. and stirred at that temperature for 2 hours. The mixture was poured into water, extracted with ethyl acetate (3¡Á15 mL), dried and concentrated under reduced pressure. Purification by flash column chromatography on silica gel, eluting with hexanes-EtOAc (6:1 and then 4:1) gave the desire product as colorless oil (268 mg, 75%). LC/MS m/e calcd. for C20H20ClNO3: 3570, observed (M+H)+: 358.7.

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, 2-Bromo-1,1-dimethoxyethane, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Chen, Li; Feng, Lichun; He, Yun; Huang, Mengwei; Yun, Hongying; US2011/144106; (2011); A1;,
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