Ethers-buliding-blocks

Electric Literature of 2132-62-9, The chemical industry reduces the impact on the environment during synthesis 2132-62-9, name is 1,2-Bis(4-methoxyphenyl)ethyne, I believe this compound will play a more active role in future production and life.

6-chloro-1-(4-chlorophenyl)-3,4-bis(4-methoxyphenyl)-1H-2,1-benzoxaphosphinine 1-oxide (69.1 mg, 88%) as a target product was obtained under the condition of 90 C. for 16 hours, by the same reaction as the Example 1 above, except for using bis(4-chlorophenyl)phosphinic acid (43.0 mg, 0.15 mmol) instead of using phenylphosphonic monoethyl ester of the Example 1 above, and using 1,2-bis(4-methoxyphenyl)ethyne (53.6 mg, 0.23 mmol) instead of using diphenylacetylene of the Example 1 above. (0218) 1H NMR (400 MHz, CDCl3) delta 7.87-7.81 (m, 2H), 7.52-7.44 (m, 3H), 7.29 (td, J=8.1, 2.1 Hz, 1H), 7.17-7.14 (m, 4H), 7.05 (dd, J=4.1, 4.8 Hz, 1H), 6.95 (app d, J=8.7, 2H), 6.67-6.63 (m, 2H), 3.87 (s, 3H), 3.73 (s, 3H).

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, 1,2-Bis(4-methoxyphenyl)ethyne, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; KNU-INDUSTRY COOPERATION FOUNDATION; Lee, Phil Ho; Park, Young Chul; Jeon, In Cheol; Seo, Jung Min; Seo, Bo Ram; US2015/344506; (2015); A1;,
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Reference of 32338-02-6, 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. 32338-02-6, name is 2-Bromo-4-methoxyaniline belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

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.

The synthetic route of 2-Bromo-4-methoxyaniline has been constantly updated, and we look forward to future research findings.

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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Adding a certain compound to certain chemical reactions, such as: 41406-00-2, name is 3-Isopropoxyaniline, 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 41406-00-2, Formula: C9H13NO

EXAMPLE 272C 6-(3-Isopropoxybenzeneaminocarbonyl)-2-quinolinylnitrile A solution of 3-isopropoxyaniline (0.332 g, 2.2 mmol) in dry dichloromethane (5 mL) was treated with trimethylaluminum (1.1 mL of 2 M solution in hexanes) under N2 at room temperature. After 20 minutes, methyl 2-cyano-6-quinolinecarboxylate (0.414 g, 2 mmol) was added in one portion and the reaction mixture was allowed to stir at room temperature for three days. The reaction mixture was quenched with 2 M HCl (vigorous reaction) and allowed to stir for 10 minutes. The precipitated product was filtered off, washed with dichloromethane and water, and dried in a vacuum oven to afford 0.23 g (35%) of product sufficiently pure for the next step. MS m/z 332 (M+H)+, m/z 349 (M+NH4)+; 1H NMR (300 MHz, DMSO-d6) delta 1.30 (d, 6H), 4.58 (septet, 1H), 6.68-6.72 (m, 1H), 7.29 (t, 1H), 7.34-7.39 (m, 1H), 7.47-7.49 (m, 1H), 8.15 (d, 1H), 8.27 (d, 1H), 8.38 (dd, 1H), 8.73 (d, 1H), 8.84 (d, 1H), 10.56 (s, 1H, NH); IR (mic) v 3434, 2233, 1677;

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

Reference:
Patent; Abbott Laboratories; US6284796; (2001); B1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Related Products of 538-86-3, 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. 538-86-3, name is (Methoxymethyl)benzene belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

General procedure: A solution of trichloroacetimidate 7 (1.4 mmol) and the nucleophileanisole, 1,2-dimethoxybenzene, 1-fluoro-3-methoxybenzene, (methoxymethyl)benzene, benzene, toluene or 1-fluoro-3,4-dimethoxy-2-methylbenzene(8a-g) (1.4 mmol) in dry CH2Cl2 (20 ml) were treated withTMSOTf (0.16 ml) and then stirred for 20?100 min. Addition of solidsodium bicarbonate quenched the reaction, which was diluted withCH2Cl2. The reaction mixture was filtered and concentrated to give 9ag.

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

Reference:
Article; El-Nezhawy, Ahmed O.H.; Alrobaian, Majed; Khames, Ahmed; El-Badawy, Mohamed F.; Abdelwahab, Sayed F.; Bioorganic and Medicinal Chemistry; vol. 27; 7; (2019); p. 1263 – 1273;,
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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. 67191-35-9, name is 1-Isopropoxy-2-vinylbenzene belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 1-Isopropoxy-2-vinylbenzene

A flame-dried Schlenk reaction ask is charged with a stir bar and put under an Ar atmosphere. 748 mg [Dichloro-(3-phenyl-1H-inden-1-yliden)-(1,3-dimesityl-4,5-dihydro-imidazol-2-ylidene)-(pyridine)-ruthenium(II)] 2c (1.00 mmol, Umicore AG & Co KG, Hanau), 173 mg 2-isopropoxystyrene (1.05 mmol; 1.05 equiv) and 1026 mg Amberlyst 15-A resin (4.00 mmol; 4 equiv) is loaded into the reaction ask and 25 mL THF is added. The reaction mixture is stirred at 40 C. for 1 hour, during which the reaction mixture turns from red to green color. Then, the reaction mixture is sent through a Pasteur pipette equipped with a cotton plug to remove the polystyrene sulfonic acid resin. Evaporation of all volatiles, suspending in 20 mL n-hexane and subsequent filtration and drying in vacuo afforded 578 mg of the desired compound 3b as a green, air-stable product (yield: 94%). 1H and 13C NMR analytics are in agreement with those found in literature.

The synthetic route of 67191-35-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GHENT UNIVERSITY; UMICORE AG & CO. KG; Monsaert, Stijn Frans; Verpoort, Francis Walter Cornelius; US2013/35494; (2013); A1;,
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Ether | (C2H5)2O – PubChem

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. 21388-17-0, name is 2-Ethyl-6-methoxynaphthalene, A new synthetic method of this compound is introduced below., Formula: C13H14O

6-Methoxy-2-ethylnaphthalene (1.8 g), ethanol (46 mg), TBP (73 mg, 1 equivalent), Pd(Xantphos)Cl2 (3.8 mg, 1 mol %), and benzene (1 mL) were added into a reaction kettle, into which 10 atm carbon monoxide was introduced. The reaction was heated to 120 C., and stirred at this constant temperature for 16 h. After the reaction was completed, carbon monoxide was discharged, and 102 mg carbonylated ester product was obtained by column chromatography, in a yield of 79%. 1HNMR (400 MHz, CDCl3) delta 1.29 (t, J=7.2 Hz, 3H), 1.67 (d, J=6.4 Hz, 3H), 3.77-3.84 (m, 4H), 4.21 (q, J=7.2 Hz, 2H), 7.22-7.24 (m, 2H), 7.40-7.43 (m, 2H), 7.87-7.90 (m, 2H); 13CNMR (100 MHz, CDCl3) delta13.7, 14.1, 40.8, 55.8, 61.6, 105.4, 126.1, 126.7, 128.5, 129.0, 129.4, 132.8, 133.0, 156.1, 173.7; HRMS (ESI) calcd. for C16H18NaO3 [M+Na]: 281.1154. found: 281.1150. The ester product obtained was dissolved in 1,4-dioxane. 6 N sodium hydroxide solution was added, and the reaction was heated to 60 C. After 2 h of reaction, the pH value was adjusted to 1 by adding 2 N hydrochloric acid. After removing the organic solvent under reduced pressure, 84 mg product naproxen was obtained by extraction with ethyl acetate, and the yield of hydrolysis was 92%.

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; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences; Huang, Hanmin; Xia, Chungu; Xie, Pan; US2013/303798; (2013); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Application of 332-48-9, 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. 332-48-9 name is 1-(2-Bromoethoxy)-4-fluorobenzene, 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 suspension of N-Boc- (L)-dopa 67.27 mmol), 2-(4- fluorophenoxy) ethyl bromide (0.95 eq) and potasium bicarbonate (1.1 eq) in DMA (100 mL) was stirred at 65 C overnight. The reacted mixture was diluted with EtOAc (750 mL), washed with water (2×200 mL) and saturated NaHC03 (2×200 mL), brined, dried over Na2S04, concentrated under reduced pressure, and purified by column chromatography on silica gel (60 A, 200-400 Mesh) eluting with 3:7 EtOAc/Hexane to give a clear oil. [00176] The oil was dissolved in a solution of HCl/1,4-dioxane (4.OM, 100 mL), and the mixture was stirred at room temperature for 1 hour before concentrating under reduced pressure to a solid. After dissolving the solid in a minimal amount of acetonitrile (100 mL), the solution was chilled to 4 C, and the resulting white precipitate was collected on a Buchner funnel, washed with diethyl ether (3×50 mL) and dried under high vacuum to afford the title compound as a solid: ¹H NMR (d6-DMSO) : No. 2.92 (m, 2H), 4.14 (m, 2H), 4.21 (t, J = 6.4 Hz, 1H), 4.42 (t, J = 4.4 Hz, 2H), 6.43 (d, J = 7.6 Hz, 1H), 6.59 (s, 1H), 6.60 (d, J = 8.0 Hz, 1H), 6.94 (m, 2H), 7.12 (3, 2H), 8.40 (s, 3H), 8.90 (m, 2H). MS (ESI) m/z 336 (M+H) (at) and 334 (M-H)-.

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

Reference:
Patent; XENOPORT, INC.; WO2005/121070; (2005); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Adding a certain compound to certain chemical reactions, such as: 93919-56-3, name is (4-(Trifluoromethoxy)phenyl)methanamine, 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 93919-56-3, name: (4-(Trifluoromethoxy)phenyl)methanamine

General procedure: To a solution of 4 (290mg, 1.02mmol) in DMF (1.5mL), CDI (198mg, 1.23mmol) was added under N2 protection. The resulting reaction was stirred 50C. After 2h, the mixture was cooled to room temperature, and the corresponding benzylamine (1.53mmol) was added. The resulting reaction was stirred 50C under N2 protection overnight. Then the mixture was cooled to room temperature, quenched with 1M hydrochloric acid, diluted with water (50mL), and extracted with CH2Cl2 (60mL×3). The combined organic layer were washed with saturated solution of NaCl (60mL×3), dried over MgSO4, concentrated and purified by flash chromatography eluting with 5-50% ethyl acetate in petroleum ether, to provide the desired products 5a-5d.

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

Reference:
Article; Liu, Siming; Jiang, Ying; Yan, Ruohong; Li, Zhonghuang; Wan, Shanhe; Zhang, Tingting; Wu, Xiaoyun; Hou, Ju; Zhu, Zhengguang; Tian, Yuanxin; Zhang, Jiajie; European Journal of Medicinal Chemistry; vol. 179; (2019); p. 358 – 375;,
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Ether | (C2H5)2O – PubChem

Synthetic Route of 2132-62-9, 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. 2132-62-9, name is 1,2-Bis(4-methoxyphenyl)ethyne belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Example 5 Preparation of 3,4-Bis(4-methoxyphenyl)-1-ethoxybenz[c-1,2]oxaphosphinine 1-oxide 3,4-Bis(4-methoxyphenyl)-1-ethoxybenz[c-1,2]oxaphosphinine 1-oxide (57.0 mg, 90%) as a target compound was obtained under the condition of 90 C. for 12 hours, by the same reaction as the Example 1 above, except for using 1,2-bis(4-methoxyphenyl)ethyne (54.0 mg, 0.23 mmol) instead of using diphenylacetylene of the Example 1 above. 1H NMR (400 MHz, CDCl3) delta 7.95-7.89 (m, 1H), 7.48-7.43 (m, 1H), 7.41-7.37 (m, 1H), 7.19 (dt, J=9.17 Hz, 2.56 Hz, 2H), 7.14-7.10 (m, 2H), 7.00-6.96 (m, 1H), 6.93-6.89 (m, 2H), 7.19 (dt, J=9.20 Hz, 2.52 Hz, 2H), 4.30-4.15 (m, 2H), 3.84 (s, 3H), 3.75 (s, 3H), 1.31 (t, J=4.82 Hz, 3H)

The synthetic route of 1,2-Bis(4-methoxyphenyl)ethyne has been constantly updated, and we look forward to future research findings.

Reference:
Patent; KNU-INDUSTRY COOPERATION FOUNDATION; Lee, Phil Ho; Park, Young Chul; Jeon, In Cheol; Seo, Jung Min; Seo, Bo Ram; US2015/344506; (2015); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Reference of 2132-62-9,Some common heterocyclic compound, 2132-62-9, name is 1,2-Bis(4-methoxyphenyl)ethyne, molecular formula is C16H14O2, 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: A mixture of a substituted benzamide (1) (0.3 mmol, 1.0 equiv),an alkyne (2) (0.6 mmol or 0.9 mmol, 2.0 equiv or 3.0 equiv),10% Pd/C (0.03 mmol, 10 mol%, Alfa Aesar, No. 044696, eggshell,reduced), NaI·2H2O (0.6 mmol, 2.0 equiv), Cs2CO3 (0.3 mmol, 1.0equiv), and KOAc (0.6 mmol, 2.0 equiv) was weighted in a Schlenktube equipped with a stir bar. DMF (1.0 mL) was added and themixture was stirred at 120 C for 36 h under air. Afterwards, themixture was filtered and washed with H2O (30 mL) and extractedwith CH2Cl2 (3×30 mL). The combined organic phase was driedwith anhydrous Na2SO4. After removal of solvents under reducedpressure, the residue was absorbed to small amounts of silica. Thepurification was performed by flash column chromatography onsilica gel with EA:PE (Petroleum ether) = 1:5 or 1:10 as eluent.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1,2-Bis(4-methoxyphenyl)ethyne, its application will become more common.

Reference:
Article; Shu, Zhen; Guo, Yuntao; Li, Wei; Wang, Baiquan; Catalysis Today; vol. 297; (2017); p. 292 – 297;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem