Ethers-buliding-blocks

Adding a certain compound to certain chemical reactions, such as: 101-55-3, name is 1-Bromo-4-phenoxybenzene, 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 101-55-3, HPLC of Formula: C12H9BrO

(2) In a 500 ml four-necked flask, 3 g of 4-bromobiphenyl ether and 61 g of diethyl ether and 3.3 g of magnesium wire were put into a 500 ml four-necked flask under the protection of high-purity nitrogen, and Grignard reaction was initiated by rapid stirring at 35 C.,8 ~ 9 hours dropping 4-bromo-diphenyl ether 28g and80g ether solution,40 incubated for 2 hours, cooled to 5 , quickly added mixed coupling agent (cuprous iodide 1.5g, cuprous bromide 1.0g), continue to cool to -16 , temperature -16 ~ 20 ,(15 g of S-epichlorohydrin and 18 g of diethyl ether) was added dropwise for 10 to 11 hours and then incubated at -16 to 20 C for 15 hours, transferred to 65 g of 12% dilute sulfuric acid and stirred at 25 to 30 C for 1 hour,After standing for half an hour, the layers were separated and the ether was distilled and recovered. 120 g of water was added and the mixture was filtered while cooling to 5 C. The wet product was dried at 75 C for 2 hours to obtain (S) -1- (4-diphenylether) -2- Hydroxy-3-chloropropane yield 91.8%, content 95.1%. .

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; Binhai Extensive Chemical Co., Ltd.; Wu Fucai; (8 pag.)CN106957220; (2017); A;,
Ether – Wikipedia,
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Some common heterocyclic compound, 588-96-5, name is p-Bromophenetole, molecular formula is C8H9BrO, 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. Product Details of 588-96-5

To a solution of 4-bromophenetole (1.86 mL, 13.0 mmol) in anhydrous THF (15 mL) was added dropwise (over a 5-min period) a solution of n-BuLi (6.0 mL, 2.5 M in hexane) under nitrogen atmosphere at -78 C. The resulting mixture was stirred at -78 C for 1 hour, and then a solution of the Weinreb amide 43 (1.85 g, 10.0 mmol) in anhydrous THF (5.0 mL) was added dropwise (over a 10-min period). The reaction mixture was allowed to warm to room temperature and stirred for 16 hours. The mixture was poured into a 1 M HC1 solution (25 mL) and extracted with EtOAc (50 mL). The organic phase was subsequently washed with brine, dried over MgS04 and evaporated under vacuum. The residue was further purified by silica column chromatography (Biotage) to provide (4- ethoxyphenyl)(3-methylthiophen-2-yl)methanone (44, 1.52 g, 6.16 mmol, 62 %). NMR (400 MHz, CDC13) delta 7.84 (d, J = 8.8 Hz, 2H), 7.45 (d, J = 5.2 Hz, 1H), 7.98 (d, J = 4.8 Hz, 1H), 6.94 (d, J – 9.2 Hz, 2H), 4.1 1 (q, J = 6.8 Hz, 2H), 2.40 (s, 3H), 1.45 (t, J= 6.8 Hz, 3H); MH+ 247.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 588-96-5, its application will become more common.

Reference:
Patent; GREEN CROSS CORPORATION; LEE, Jinhwa; SONG, Kwang-Seop; LEE, Suk Ho; WO2012/33390; (2012); A2;,
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Electric Literature of 91-16-7, These common heterocyclic compound, 91-16-7, name is 1,2-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.

A type B crystal of 2,3,6,7,10,11-hexahydroxytriphenylene monohydrate was synthesized according to the process described in Synthesis, 477, 1994 and JP-A-8-119894. Namely, 1,2-dimethoxybenzene (31.78 g, 0.23 moles) and anhydrous ferric chloride (120 g, 0.74 moles) were dissolved in 70% sulfuric acid, and the solution was reacted at 25C for 24 hours with stirring. After completion of the reaction, the solution was poured into ice water (500 g), and the precipitated crystal was collected by filtration. After the resultant crystal was washed with water (1 L), and then dried to give pale purple colored 2,3,6,7,10,11-hexamethoxytriphenylene (28.2 g, theoretical yield from 1,2-dimethoxybenzene: 90.1%) (the method of Synthesis, 477, 1994).

The synthetic route of 91-16-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Wako Pure Chemical Industries, Ltd.; EP2177495; (2010); A1;,
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Adding a certain compound to certain chemical reactions, such as: 22236-10-8, name is 4-(Difluoromethoxy)aniline, 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 22236-10-8, COA of Formula: C7H7F2NO

5.1 Methyl 4-({[2-{(3R)-3-[(tert-butoxycarbonyl)amino]piperidin-1-yl}-1-(2-chlorobenzyl)-4-iodo-1H-imidazol-5-yl]carbonyl}amino)benzoate (5t) To a solution of 4 (56.08 g, 100 mmol) in CH2Cl2 (1.3 L) were added (COCl)2 (16.5 g, 130 mmol) and DMF (5 ml) at 0 C. The reaction mixture was stirred at room temperature for 4 h and concentrated under reduced pressure. The residue was azeotroped with toluene and redissolved in toluene (1.3 L). To this solution was added DIPEA (38.8 g, 300 mmol) followed by methyl 4-aminobenzoate (19.7 g, 130 mmol). The reaction mixture was stirred at room temperature for 12 h. The reaction mixture was then quenched with saturated NH4Cl aqueous solution, extracted with EtOAc, washed with brine, dried over Na2SO4, and concentrated under reduced pressure. The residue was purified by silica-gel column chromatography to give 5t (54.63 g, yield 79%) as a white amorphous. 1H NMR (300 MHz, CDCl3) delta 8.30 (br s, 1H), 8.01 (d, J = 8.7 Hz, 2H), 7.62 (d, J = 8.7 Hz, 2H), 7.39-7.36 (m, 1H), 7.22-7.13 (m, 2H), 6.82-6.78 (m, 1H), 5.58 (d, J = 16.2 Hz, 1H), 5.50 (d, J = 16.2 Hz, 1H), 4.93-4.90 (m, 1H), 3.90 (s, 3H), 3.77 (br s, 1H), 3.31 (dd, J = 3.3, 12.0 Hz, 1H), 2.93-2.84 (m, 3H), 1.78-1.54 (m, 4H), 1.49 (s, 9H); HRMS (ESI) [M+H]+ calcd for C29H34O5N5ClI 694.1288, found 694.1272; IR (ATR): 1714, 1675, 1591, 1513, 1434, 1405, 1311, 1280, 1243, 1222, 1172, 1110, 1060 cm-1; Anal. calcd for C29H33O5N5ClI: C, 50.19; H, 4.79; N, 10.09, found: C, 50.52; H, 4.95; N, 9.92.

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:
Article; Ikuma, Yohei; Hochigai, Hitoshi; Kimura, Hidenori; Nunami, Noriko; Kobayashi, Tomonori; Uchiyama, Katsuya; Furuta, Yudai; Sakai, Mutsuko; Horiguchi, Masakuni; Masui, Yumi; Okazaki, Kazuhiko; Sato, Yasuhiro; Nakahira, Hiroyuki; Bioorganic and Medicinal Chemistry; vol. 20; 19; (2012); p. 5864 – 5883;,
Ether – Wikipedia,
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Adding a certain compound to certain chemical reactions, such as: 31576-51-9, name is 2-(2-Methoxyethoxy)ethanamine, 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 31576-51-9, Formula: C5H13NO2

General procedure: A solution of compound (ZDR019) (3.0 g, 7.88 mmol), dimethylamine hydrochloride (1.92 g, 23.6 mmol), sodium triacetoxyborohydride (3.32 g, 15.7 mmol) and N,N- diisopropylethylamine (4.8 ml_, 27.5 mmol) in 1,2-dichloroethane (150 mL) was stirred at room temperature for 18 h. The reaction was quenched through the addition of water (100 mL) and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7) . The mixture was then diluted with dichloromethane (100 mL) and the separated aqueous layer further extracted with dichloromethane (2 x 50 mL). The combined organic layers were washed with aqueous phosphate buffer solution (0.5 M, pH 7) (100 mL), dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 20: 1 10: 1 7: 1) afforded compound (ZDR022) as a white solid (2.40 g, 5.86 mmol, 74%).

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-(2-Methoxyethoxy)ethanamine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; OTAGO INNOVATION LIMITED; BRIMBLE, Margaret Anne; COOK, Greg Murray; FERGUSON, Scott Andrew; HEIKAL, Adam; RENNISON, David; (130 pag.)WO2019/125185; (2019); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

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. 111-95-5, name is Bis(2-methoxyethyl)amine, This compound has unique chemical properties. The synthetic route is as follows., Product Details of 111-95-5

Propargyl bromide (17.8 g, 150 mmol) was added dropwise to a mixture of bis(2-methoxyethyl)amine (20g, 150 mmol) and cesium carbonate (49 g, 150 mmol) in 350 mL of acetone. The mixture was stirred overnight under nitrogen at room temperature. The inorganic salts were then filtered off, and the solvent was removed. The residue was dissolved in saturated sodium bicarbonate solution and extracted with ethyl acetate. The organic extracts were then evaporated to give 20 g of bis-(2-methoxy-ethyl)-prop-2-ynyl-amine: mass spectrum (m/e): M+H 172.

According to the analysis of related databases, 111-95-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Wyeth Holdings Corporation; EP1171440; (2004); B1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Application of 701-07-5, 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. 701-07-5 name is 2-(2′-Bromophenoxy)propane, 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.

Step 2: magnesium (350 mg, 14.42 mmol) was suspended in small amount of dry THF. Few crystals of iodine was added followed by 1 -bromo-2- isopropoxybenzene (1 g, 4.65 mmol) dissolved in dry THF. The reaction mixture was stirred at rt. The completion of halogen exchange was monitored by TLC. 2-Methyl-N-[(1 E)-(5-methylfuran-2-yl)methylidene]propane-2- sulfinamide (3.03 g, 13.95 mmol) diluted in dry THF was added dropwise at rt. The solution was stirred at rt for 2h. Sat. NH4CI was used to quench the reaction. The aqueous layer was extracted with EtOAc. The combined organic layers were dried over MgS04, filtered and the solution was concentrated under vacuo. The crude material was purified on silica gel column chromatography using hexanes/EtOAc (4:1 ) as eluent.

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

Reference:
Patent; GENFIT; DELHOMEL, Jean-Francois; WALCZAK, Robert; MAJD, Zouher; PIHAN, Emilie; BONNET, Pascal; PERSPICACE, Enrico; (198 pag.)WO2016/102633; (2016); A1;,
Ether – Wikipedia,
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Reference of 22094-18-4, A common heterocyclic compound, 22094-18-4, name is 1,3-Dibromo-2,2-dimethoxypropane, molecular formula is C5H10Br2O2, 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.

Example 114A 3,3-dimethoxy-1-(3-(trifluoromethoxy)phenyl)cyclobutanecarboxamide The mixture of 1,3-dibromo-2,2-dimethoxypropane (1310 mg, 5.00 mmol), sodium tert-butoxide (1057 mg, 11 mmol) and 2-(3-(trifluoromethoxy)phenyl)acetonitrile (1006 mg, 5 mmol) in DMSO (12 mL) was stirred at 25 C. for about 16 hours, then heated at about 125 C. for about 30 minutes. The solution was cooled to room temperature, diluted with water, and extracted with ether three times. The organic phase was washed with saturated NH4Cl. The combined organic layers were dried over MgSO4, filtered, and concentrated. The crude mixture was purified by silica gel chromatography (50% Hexanes/EtOAc to 100% EtOAc) to afford the product (450 mg, 28.2%). LC-MS: m/z (M+H) 288. 1H NMR (400 MHz, DMSO-d6): delta 7.44-7.48 (t, J=8 Hz, 1H), 7.41 (s, 1H), 7.34-7.36 (d, J=7.6 Hz, 1H), 7.30 (s, 1H), 7.22-7.24 (d, J=8 Hz, 1H), 6.95 (s, 1H), 3.05 (s, 3H), 3.00 (s, 3H), 3.00-2.95 (d, J=14 Hz, 2H), 2.43-2.40 (d, J=12.8 Hz, 2H).

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; AbbVie Inc.; Bayburt, Erol K.; Clapham, Bruce; Cox, Phil B.; Daanen, Jerome F.; Dart, Michael J.; Gfesser, Gregory A.; Gomtsyan, Arthur; Kort, Michael E.; Kym, Philip R.; Schmidt, Robert G.; Voight, Eric A.; US2014/80803; (2014); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

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. 1077-01-6, name is 1-Fluoro-3-(trifluoromethoxy)benzene, This compound has unique chemical properties. The synthetic route is as follows., category: ethers-buliding-blocks

1-fluoro-3-(trifluoromethoxy)benzene (7.5 g, 41.6 mmol) was dissolved in concentrated sulfuric acid (30 mL),and the mixuture was cooled to 0 C. KNO3 (1.04 g, 10.25 mmol) was added slowly in batches. The internal temperatureis keeped below 5 C. Upon completion of the addition, the mixture was stirred for 2 hours. An eice-water mixture (about50 mL) was added. The reaction solution was extracted with methyl tert-butyl ether (2033 mL), and the organic phaseswere combined, dried and filtered. The filtrate was concentrated and purified by flash silica gel column chromatographyto obtain 4-fluoro-1-nitro-2-(trifluoromethoxy)benzene (4.0 g, 42%).

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 1077-01-6.

Reference:
Patent; Shanghai Hansoh Biomedical Co., Ltd.; Jiangsu Hansoh Pharmaceutical Group Co., Ltd.; WEI, Mingsong; SUN, Guangjun; TAN, Songliang; GAO, Peng; WANG, Shaobao; XIU, Wenhua; ZHANG, Fujun; BAO, Rudi; (183 pag.)EP3205650; (2017); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

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. 366-99-4, name is 3-Fluoro-4-methoxyaniline, This compound has unique chemical properties. The synthetic route is as follows., category: ethers-buliding-blocks

Cyclohexanone (19.62 g, 200 mmol), Acetic acid (1.8 g, 30 mmol), and Sodium triacetoxyborohydride (6.36 g, 30 mmol) were added to a solution of 3-Fluoro-4-methoxyaniline (2.82 g, 20 mmol) in DCM (120 mL) and the mixture was stirred at RT for 12 hr. Water was added to quench the reaction and the mixture was extracted with DCM. The solvent was removed under and the residue was purified by silica gel chromatography to afford N-Cyclohexyl-3-fluoro-4-methoxyaniline (2.8 g, 63percent yield). MS m/z=224 [M+H].

According to the analysis of related databases, 366-99-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; JIANGSU ASCENTAGE BIOMED DEVELOPMENT INC.; CHEN, Jianyong; ZHOU, Yunlong; WANG, Shaomeng; GUO, Ming; YANG, Dajun; JIAO, Lingling; JING, Yu; QIAN, Xu; LIU, Liu; BAI, Longchuan; YANG, Chao-Yie; MCEACHERN, Donna; WO2015/127629; (2015); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem