Ethers-buliding-blocks

Adding a certain compound to certain chemical reactions, such as: 658-89-9, name is 4-(Trifluoromethoxy)benzene-1,2-diamine, 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 658-89-9, Computed Properties of C7H7F3N2O

2-Methyl-5-trifluoromethoxybenzimidazole. The starting material, 2-amino-4-trifluoromethoxyaniline, was obtained by the method of Yagupolskii, L. M. et al. (Yagupolskii L. M., Troitskaya V. I. J. Gen. Chem. USSR Engl. Transl., 1961, Vol. 31, p. 845; Chem. Abstr. 1961, Vol. 55, p. 22830f). The procedure of Philips, M. A. (Philips M. A. J. Chem. Soc. 1929, p. 2820-2828) was used to produce 2-methyl-5-trifluoromethoxybenzimidazole. To 2-amino-4-trifluoromethoxyaniline (0.7 g, 0.0036 Mol) acetic acid anhydride (1.5g, 0.0146 Mol) was carefully added at 20 C. and the mixture was stirred 5 minutes at this temperature. Then 2-3 drops of concentrated aqueous HCl was added with stiffing, and the mixture was refluxed for 7 hours The reaction solution was cooled and diluted with water (10 mL), 0.5 g of charcoal was added, and the mixture was refluxed more 5-10 min. After cooling, the mixture was filtered and resulted clear filtrate was washed with ether (2×10 mL). The water layer was neutralized with excess of dilute NH4OH -(charcoal was filtered) The precipitate was filtered, washed with water and dried to give a solid (0.34 g, 44% by wt. pure). M.p. 135-137 C. 1H NMR (DMSO-d6): 2.49 (s, 3H), 7.17 (d, J=8.5 Hz, 1H), 7.34 (s, 1H), 7.62 (d, J=8.5 Hz, 1H). 13C NMR (DMSO-d6): 14.47, 107.44, 114.19, 117.25, 120.28 (q, J=255.2 Hz), 137.06, 139.46, 143.09, 153.26. 19F NMR (DMSO-d6): -57.41. [M+1]+ 217.

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

Reference:
Patent; The United States of America as represented by the United States Department of Energy; US8242284; (2012); B1;,
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These common heterocyclic compound, 658-89-9, name is 4-(Trifluoromethoxy)benzene-1,2-diamine, 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. name: 4-(Trifluoromethoxy)benzene-1,2-diamine

[0227] Quinoline-7-carboxylic acid (34.6 mg, 0.2 mmol, 1.0 equiv) and 4- trifluoromethoxy-l,2-diaminobenzene (40.3 mg, 0.21 mmol, 1.05 equiv) were suspended in dry Nu,Nu-dimethyl formamide (0.17 M) under argon atmosphere followed by the addition of triethylamine (1.2 equiv). Then HATU (N-[(Dimethylamino)-lH-l,2,3-triazolo-[4,5-b]pyridin-l- ylmethylene]-N-methylmethanaminium hexafluorophosphate N-oxide) (1.2 equiv) was added and the reaction mixture was stirred for 16 hours at room temperature. After dilution with water, the mixture was extracted with dichloromethane (3 x 20 mL). Combined organic layers were dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The crude product was purified on C18-silica gel (water/acetonitrile + 0.1% trifluoroacetic acid). Fractions containing the desired product were combined and solvent was removed in vacuo. Solid product was dissolved in glacial acetic acid (0.2 M) and the resulting solution was heated in a sealed vial at 140 C for 2 hours. After cooling down to room temperature, acetic acid was removed in vacuo and the crude product was purified on C18-silica gel (water/acetonitrile + 0.1% trifluoroacetic acid). Fractions containing the desired product were combined and treated with saturated sodium bicarbonate solution. This mixture was extracted with dichloromethane (3 x 20 mL). Combined organic layers were dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to give 47.5 mg of the desired product 74 as an off-white solid (38% yield) in >95% purity as determined by HPLC. 1H NMR (500 MHz; CD30D): delta 8.95 (dd, J = 4.3, 1.5 Hz, 1H), 8.71 (s, 1H), 8.43 (d, J = 8.2 Hz, 1H), 8.35 (dd, J = 8.6, 1.7 Hz, 1H), 8.13 (d, J = 8.6 Hz, 1H), 7.71 (d, J = 8.9 Hz, 1H), 7.61 (dd, J (0637) (s, 1H), 7.24 (d, J= 8.8 Hz, 1H); LC/MS [m/z]: 330 [M+H]+.

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

Reference:
Patent; ACTAVALON, INC.; DNEPROVSKAIA, Elena, V.; HOLZWARTH, Michael, S.; RYCHNOVSKY, Scott, D.; (184 pag.)WO2018/85348; (2018); A1;,
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Related Products of 41365-75-7,Some common heterocyclic compound, 41365-75-7, name is 1-Amino-3,3-diethoxypropane, molecular formula is C7H17NO2, 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-5-1) 1-tert-Butoxycarbonylamino-3,3-diethoxypropane A mixture of di-tert-butyl dicarbonate (9 g, 40 mmol.) in dioxane (40 ml) is added drop by drop, with stirring and at 0 C., to a solution of 1-amino-3,3-diethoxypropane (5.52 g, 37 mmol) and Et3N (4.04 g, 40 mmol) in 5 ml dioxane. After 2 hrs, the mixture is stirred at ambient temperature for 12 hrs then the solvent is evaporated. The residual oil is taken up in 10 ml of water, acidified with 30 ml HCl (1%), then extracted with ethyl acetate (60 ml*3). The organic phases are dried (MgSO4) and evaporated to give 8.89 g of 1-tert-butoxycarbonylamino-3,3-diethoxypropane (90%). 1H NMR (CDCl3): 1.20 (t, 6H, J=8.8 Hz, CH3), 1.40 (s, 9H, C(CH3)3), 1.60-2.00 (m, 2H, CH2C), 3.00-3.80 (m, 6H, OCH2+NHCH2), 4.50 (t, 1H, J=6.4 Hz, CH), 5.05-5.10 (br, 1H, NH).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-Amino-3,3-diethoxypropane, its application will become more common.

Reference:
Patent; Baudy Floc’h, Michele; Busnel, Olivier; Muller, Sylviane; US2011/44974; (2011); A1;,
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Reference of 7664-66-6, 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. 7664-66-6 name is 4-Isopropoxyaniline, 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 mixture of 3-chloro-6-methyl-4-(4-methylbenzyl)pyridazine (200 mg, 0.859 mmol), 4-isopropoxyaniline (169 mg, 1.12 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (112 mg, 0.193 mmol), cesium carbonate (560 mg, 1.72 mmol) and dioxane (4 mL) was added palladium acetate (28.9 mg, 0.129 mmol) under nitrogen atmosphere, and the resulting mixture was heated at reflux for 1 hour. To the reaction mixture were added water (200 mL) and saturated aqueous ammonium chloride (5 mL). The resulting mixture was extracted with ethyl acetate (200 mL). The extract was washed by brine (200 mL), dried over anhydrous magnesium sulfate, and concentrated in vacuo. The resulting residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give 3-(4-isopropoxyphenylamino)-6-methyl-4-(4-methylbenzyl)pyridazine (187 mg, Yield: 62.7%) as yellow amorphous. 1H-NMR (delta ppm TMS/CDCl3): 1.31 (6H, d, J=6.1 Hz), 2.37 (3H, s), 2.56 (3H, s), 3.84 (2H, s), 4.46 (1H, sep, J=6.1 Hz), 5.96 (1H, s), 6.80 (2H, d, J=8.3 Hz), 7.08 (2H, d, J=7.9 Hz), 7.18 (2H, d, J=7.9 Hz), 7.34 (2H, d, J=8.3 Hz).

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

Reference:
Patent; Shionogi & Co., Ltd.; KAI, Hiroyuki; ENDOH, Takeshi; JIKIHARA, Sae; ASAHI, Kentaro; HORIGUCHI, Tohru; EP2604260; (2013); 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. 31465-36-8, name is 4-(4-Methoxyphenoxy)aniline, A new synthetic method of this compound is introduced below., Recommanded Product: 31465-36-8

PREPARATION 11 2-Amino-6-(4-methoxyphenoxy)benzothiazole Following a procedure similar to that described in Preparation 1, 13.50 g of the title compound were obtained as light brown fine crystals, melting at 165-167 C., from 15.00 g of 4-(4-methoxyphenoxy)aniline.

The synthetic route of 31465-36-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Sankyo Company, Limited; US5002942; (1991); A;,
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Application of 16452-01-0, The chemical industry reduces the impact on the environment during synthesis 16452-01-0, name is 3-Methoxy-4-methylaniline, I believe this compound will play a more active role in future production and life.

g. 2-bromo-5-methoxy-4-methyl-aniline. To a solution of 3-methoxy-4-methyl-aniline (8.19 g, 59.71 mmol) in dichloromethane (200 mL), was added tetrabutylammonium tribromide (28.79 g, 59.71 mmol) and the reaction mixture was stirred at room temperature for 2.5 hrs. Aqueous NaHCO3 was added and the layers separated. The aqueous layer was further extracted with dichloromethane and the combined organics washed successively with water and brine, dried over MgSO4, filtered and evaporated. The residue was chromatographed on silica gel (20% ethyl acetate in hexane) to give 11.05 g of 2-bromo-5-methoxy-4-methyl-aniline (85% yield). 1H NMR (300 MHz; CDCl3): 2.09 (s, 3 H), 3.75 (s, 3 H), 3.95 (br s, 1 H), 6.27 (s, 1 H), 7.13 (s, 1 H).

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-Methoxy-4-methylaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Pfahl, Magnus; Tachdjian, Catherine; Spruce, Lyle W.; Al-Shamma, Hussien A.; Boudjelal, Mohamed; Fanjul, Andrea N.; Wiemann, Torsten R.; Pleynet, David P.M.; US2003/144329; (2003); A1;,
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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. 4698-11-7, name is 10-Methoxy-5H-dibenzo[b,f]azepine belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. SDS of cas: 4698-11-7

Following the procedure of Example 1, but using 30% aqueous formic acid instead of the same volume of 10% aqueous sulfuric acid, the yield is 58.0 (76.6% on theoretical).

The synthetic route of 4698-11-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Milanese, Alberto; EP1600443; (2005); A1;,
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Reference of 19056-40-7, 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. 19056-40-7, name is 4-Bromo-3-methoxyaniline belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

To an ice cooled solution of 4-bromo-3-methoxyaniline (3.00 g, 14.85 mmol) in pyridine(20 mL) was added (E/Z)-3-ethoxyacryloyl chloride (2.98 g, 22.27 mmol) over a period of 5 mm.and stirred at RT for 16 h. After completion of the reaction, the reaction mixture was diluted with ice cooled water and extracted with EtOAC (150 mL x 2). The combined organic layer was washed with aq. iN HC1 (100 mL), water (150 mL), brine (100 mL), dried over sodium sulphate and concentrated. The residue was used for next step without further purification (3.20 g, 72percent).1H NMR (400 MHz, DMSO-d6): oe 9.86 (s, 1H), 7.54?7.42 (m, 3H), 7. 12?7.08 (m 1H), 5.50 (d,J=12.7 Hz, 1H), 3.95 (q, J=6.9 Hz, 2H), 3.80 (s, 3H), 1.27 (t, J=7.3 Hz, 3H); LC-MS: mlz 301.1(M+1).

The synthetic route of 4-Bromo-3-methoxyaniline has been constantly updated, and we look forward to future research findings.

Reference:
Patent; AURIGENE DISCOVERY TECHNOLOGIES LIMITED; SAMAJDAR, Susanta; ABBINENI, Chandrasekhar; SASMAL, Sanjita; HOSAHALLI, Subramanya; WO2015/104653; (2015); 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. 1836-62-0, name is 2-(2-Methoxyphenoxy)ethylamine, A new synthetic method of this compound is introduced below., Formula: C9H13NO2

(f) A mixture comprising 2-(2-methoxyphenoxy)ethylamine (10 g, 59.9 mmol), diisopropylethylamine (13.9 mL, 81.6 mmol) and dichloromethane (80 mL) was cooled to 0 C. and then a solution of 3-methoxy-4-nitrobenzoyl chloride (11.76 g, 54.4 mmol) in dichloromethane (50 mL) was added dropwise. The mixture was allowed to warm to 23 C. over two hours, quenched with aqueous hydrochloric acid (3M, 20 mL), washed with water (3*20 mL), dried (Na2SO4) and concentrated in vacuo to provide N-[2-(2-methoxyphenoxy)ethyl]-3-methoxy-4-nitrobenzamide (14 g, 74% yield) an off white solid; MS (PB-PCI) C17H18N2O6 m/e calc 346.34; found 347 (MH+).

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; Church, Timothy J.; Cutshall, Neil Scott; Gangloff, Anthony R.; Jenkins, Thomas E.; Linsell, Martin S.; Litvak, Joane; Rice, Kenneth D.; Spencer, Jeffrey R.; Wang, Vivian R.; US2001/53779; (2001); A1;,
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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. 103-50-4, name is Benzyl ether belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. category: ethers-buliding-blocks

General procedure: A mixture of azobenzene 1 (0.25 mmol), dibenzyl ether 2 (0.75 mmol), TBHP (1.5 mmol), and DCE (1 mL) was charged into a sealed tube. After stirring vigorously at 120 C for 24 h, the mixture was evaporated under vacuum. The corresponding product 7 was isolated by silica gel column chromatography with a PE/EtOAc mixture as eluent.

The synthetic route of 103-50-4 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Hong, Gang; Aruma, Alfred Njasotapher; Zhu, Xiaoyan; Wu, Shengying; Wang, Limin; Synthesis; vol. 48; 8; (2016); p. 1147 – 1158;,
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