Tag: M.W=200-300

Related Products of 112970-44-2, 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 112970-44-2 as follows.

Step 2. Synthesis of N-(2-bromo-3-methoxyphenyl)-2,2,2-trifluoroacetamide (C24) Trifluoroacetic anhydride (3.0 mL, 22 mmol) was added to a solution of 2-bromo-3-methoxyaniline (C23) (2.57 g, 10.77 mmol) and triethylamine (4.51 mL, 32.3 mmol) in dichloromethane (30 mL) at -78 C. The reaction was allowed to warm to room temperature and stirring was continued for 18 hours, whereupon the mixture was poured into water (40 mL) and extracted with dichloromethane (2*20 mL). The combined organic layers were dried over sodium sulfate and concentrated in vacuo. Purification via silica gel chromatography (Gradient: 0% to 30% methyl tert-butyl ether in hexanes) afforded the title compound as a colorless solid. Yield: 2.97 g, 9.96 mmol, 92%. GCMS m/z 297, 299 (M+). 1H NMR (400 MHz, CDCl3) delta 3.94 (s, 3H), 6.81 (dd, J=8.4, 1.2 Hz, 1H), 7.35 (dd, J=8.4, 8.3 Hz, 1H), 7.97 (dd, J=8.3, 1.3 Hz, 1H), 8.59 (br s, 1H).

According to the analysis of related databases, 112970-44-2, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Pettersson, Martin Youngjin; Johnson, Douglas Scott; Subramanyam, Chakrapani; O’Donnell, Christopher John; Ende, Christopher William Am; Fish, Benjamin Adam; Green, Michael Eric; Mullins, Patrick Bradley; Stiff, Cory Michael; Tran, Tuan Phong; Navaratnam, Thayalan; US2012/252758; (2012); 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. 1663-61-2, name is (Triethoxymethyl)benzene, A new synthetic method of this compound is introduced below., Recommanded Product: (Triethoxymethyl)benzene

1,1,1-Trimethoxyethane (35 mg, 0.291 mmol) and 3 mgcamphorsulfonic acid (0.012 mmol) were added to asolution of 113 mg heptoside 1 (0.242 mmol) in 1 cm3dry CH2Cl2 and stirred for 1 h at rt when TLC showed fullconversion of 1 into intermediate 11 (Rf = 0.33, hexane/EtOAc = 2/1).

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:
Article; Walter, Martin; Kohout, Claudia; Blaukopf, Markus; Kosma, Paul; Monatshefte fur Chemie; vol. 148; 1; (2017); p. 111 – 119;,
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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. 7025-06-1, name is 1-Bromo-2-phenoxybenzene, A new synthetic method of this compound is introduced below., Formula: C12H9BrO

The THF solution (50 mL) of the compound 3 (g [ 7.5 ], 40mmol) was dropped at the roomtemperature at metal magnesium (1 g, 40mmol), 1,2dibromoethane (0.2 mL), and themixture of THF (50 mL), and was stirred into them for 3 hours. The THF solution (20 mL) ofthe phosphorus trichloride (2.6 mL, 30mmol) was dropped here at 78 degree C, and it stirredat the room temperature for 1 hour. It removed under decompression of a solvent and anexcessive phosphorus trichloride, THF (50 mL) was newly added, and the solution of thecompound 4 was obtained. The solution of the compound 2 of the preceding paragraph wasdropped here at 78 degree C, and it stirred at the room temperature for 2 hours to make the solution of the compound 5.

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; JAPAN POLYETHYLENE CORPORATION; JAPAN POLYPROPYLENE CORPORATION; XIN, SHIXUAN; SHIMIZU, FUMIHIKO; SATO, NAOMASA; TANNA, AKIO; (45 pag.)JP5812764; (2015); B2;,
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Adding a certain compound to certain chemical reactions, such as: 2674-34-2, name is 1,4-Dibromo-2,5-dimethoxybenzene, 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 2674-34-2, SDS of cas: 2674-34-2

General procedure: To an N-heterocycle was added a solution of i-PrMgCl*LiCl (1.33 M, 1.8 eq. with respect to N-heterocycle, in THF) and (i-Pr)2NH (0.1 with respect to N-heterocycle). The mixture was stirred at room temperature under an argon atmosphere for 18 hours. An electrophile was added and the mixture was stirred at room temperature for 20 minutes. The reaction was quenched by addition of saturated aqueous NH4Cl (20 mL), and a saturated Na2S2O3 solution (20 mL) in the case of I2 as an electrophile. The mixture was extracted three times with EtOAc, the organic layer was dried over MgSO4, filtered and the solvent was removed under reduced pressure.

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Reference:
Article; Nxumalo; Dinsmore; Synthetic Communications; vol. 45; 21; (2015); p. 2478 – 2484;,
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Synthetic Route of 36805-97-7, A common heterocyclic compound, 36805-97-7, name is 1,1-Di-tert-butoxy-N,N-dimethylmethanamine, molecular formula is C11H25NO2, 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.

Step 1: A suspension of 6-chloro-4-(isopropylamino)nicotinic acid (240 g, 1118 mmol) in toluene (1800 mL) in a 1 L round bottom flask was heated to 90 C. N,N-dimethylformamide di-tert-butyl acetal (1609 mL, 6709 mmol) in toluene (1800 mL) was added slowly over 8-9 hrs. The reaction mixture was heated at 90 C. for 12 hrs. After completion of 12 hrs, the reaction mixture was cooled and concentrated under reduced pressure to remove excess of solvent and obtain the crude material. The crude material was purified by flash column chromatography using silica gel as stationary phase and EtOAc: pet ether (2:8) as eluent to afford the title compound, tert-butyl 6-chloro-4-(isopropylamino)nicotinate (275 g, 91% yield). LC/MS 271.0 (M+H). 1H NMR (400 MHz, CDCl3) delta=8.59 (s, 1H), 8.14-8.08 (m, 1H), 6.51 (s, 1H), 3.71-3.61 (m, 1H), 1.57 (s, 9H), 1.28 (d, J=6.5 Hz, 6H).

The synthetic route of 36805-97-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Santella, Joseph B.; Kumar, Sreekantha Ratna; Duncia, John V.; Gardner, Daniel S.; Paidi, Venkatram Reddy; Nair, Satheesh Kesavan; Hynes, John; Wu, Hong; Murugesan, Natesan; Sarkunam, Kandhasamy; Arunachalam, Piramanayagam; US2015/191464; (2015); A1;,
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These common heterocyclic compound, 1462-37-9, name is ((2-Bromoethoxy)methyl)benzene, 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. Safety of ((2-Bromoethoxy)methyl)benzene

506 mg (60percent in oil, 13 mmol equivalents) of sodium hydride was added to 5.0 mL of tetrahydrofuran, and the mixture was cooled to about 0°C in an ice bath. 3.2 mL (20.7 mmol equivalents) of diethyl malonate was added thereto (solution A). 2.3 g (10.7 mmol equivalents) of 2-benzyloxy-1-bromoethane was dissolved in 3.0 mL of tetrahydrofuran, this was added dropwise to solution A over 10 minutes, and the mixture was refluxed while heating overnight. After completion of the reaction, a 0.5 mol/L aqueous solution of hydrochloric acid was added dropwise to the reaction liquid, and the mixture was extracted three times with diethyl ether. The combined diethyl ether layers were washed with brine, then dried with anhydrous magnesium sulfate, and subsequently concentrated under vacuum, and the obtained crude product was purified by silica gel column chromatography (eluent: hexane/ethyl acetate (v/v) = 20/1) to give 2.85 g (9.67 mmol equivalents) of diethyl 2-(2-benzyloxyethyl)malonate. [0115] 1H-NMR (solvent: deuterated chloroform) of diethyl 2-(2-benzyloxyethyl)malonate: delta 7.36-7.28 (m, 5H), 4.48 (s, 2H), 4.21-4.14 (m, 4H), 3.60 (d, J = 7.3 Hz, 1H), 3.53 (t, J = 5.5 Hz, 2H), 2.22 (dt, J = 5.5, 7.3 Hz, 2H), 1.25 (t, J = 7.3 Hz, 6H)

The synthetic route of ((2-Bromoethoxy)methyl)benzene has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Nihon Medi-Physics Co., Ltd.; National University Corporation Hokkaido University; NAKATA, Norihito; OKUMURA, Yuki; KIRIU, Masato; NAGATA, Eriko; MATSUMOTO, Hiroki; KUGE, Yuji; ZHAO, Songji; NISHIJIMA, Ken-Ichi; EP2759538; (2014); A1;,
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Reference of 332-48-9,Some common heterocyclic compound, 332-48-9, name is 1-(2-Bromoethoxy)-4-fluorobenzene, molecular formula is C8H8BrFO, 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 90 4-[2-(4-fluorophenoxy)ethoxy]-1-{2-[isopropyl(methyl)amino]-1H-benzimidazol-6-yl}pyridin-2(1H)-one Potassium carbonate (60 mg) and 1-(2-bromoethoxy)-4-fluorobenzene (60 mg) were added to a DMF solution (5 mL) of the compound (60 mg) obtained in Production Example 41-2, and stirred overnight at room temperature. Ethyl acetate was added to the reaction liquid, washed successively with water and saturated saline water, and dried with anhydrous magnesium sulfate. The solvent was evaporated off under reduced pressure, and the obtained residue was purified by silica gel column chromatography (NH silica gel, chloroform) to obtain the entitled compound (14.6 mg). 1H-NMR (400 MHz, DMSO-d6, delta ppm): 1.17 (6H, d, J=6.7 Hz), 2.90 (3H, s), 4.29-4.35 (4H, m), 4.49 (1H, septet, J=6.7 Hz), 5.92 (1H, d, J=2.7 Hz), 6.03 (1H, dd, J=7.6 Hz, 2.7 Hz), 6.79 (1H, brs), 6.99-7.05 (3H, m), 7.11-7.19 (3H, m), 7.52 (1H, d, J=7.4 Hz), 11.32 (1H, brs). ESI-MS Found: m/z 437 [M+H]+

The synthetic route of 332-48-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Sakuraba, Shunji; Kameda, Minoru; Kishino, Hiroyuki; Haga, Yuji; Otake, Norikazu; Moriya, Minoru; US2009/264426; (2009); A1;,
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Synthetic Route of 2674-34-2, The chemical industry reduces the impact on the environment during synthesis 2674-34-2, name is 1,4-Dibromo-2,5-dimethoxybenzene, I believe this compound will play a more active role in future production and life.

Example 6: Preparation of 4-bromo-2,2′,5,5′- tetramethoxybiphenyl (6); [00111] In an argon flushed two-neck round-bottom flask, a mixture of 1.02 g (5.0 mmol) of sodium 2,5-dimethoxyphenylboronate, 3.0 g (10 mmol) of 2,5-dibromo-1 ,4-dimethoxybenzene, 60 mg (1 mol%) of tetrakis(triphenylphosphine)palladium, 20 ml of 2 M sodium carbonate and 50 ml of THF was added and heated at reflux for two hours. After cooling, the reaction mixture was extracted with ethyl acetate and the organic phase was EPO washed with brine and dried over magnesium sulfate. After the solvent was removed on a rotary evaporator, the residue was purified by column chromatography eluted with hexane/CH2CI2 (4:1) to give 1.0 g 4-bromo- 2,25,5′-tetramethoxybiphenyl (yield 63%). 1HNMR (CDCI3) 57.187 (s, 1 H), 6.836-6.951 (m, 4 H), 3.869 (s, 3 H), 3,814 (s, 3 H), 3.757 (s, 6 H). 13CNMR (CDCI3) 5153.788, 151.830, 151.596, 150.278, 128.277, 127.995, 117.615, 117.293, 115.897, 113.924, 112.933, 110.019, 57.291 , 57.042, 56.897, 56.171.

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, 1,4-Dibromo-2,5-dimethoxybenzene, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH; NATIONAL UNIVERSITY OF SINGAPORE; WO2006/93467; (2006); A1;,
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Related Products of 3401-47-6,Some common heterocyclic compound, 3401-47-6, name is 1-Bromo-2-methoxynaphthalene, molecular formula is C11H9BrO, 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: The mixture of anisole(1c, 0.216 mg, 2 mmol) and acetyl chloride (2a, 0.157 mg, 2 mmol) was treated with CTAB/CTAC, (0.001 mol), in dichloroethane and the resulting reaction mixture was heated in a controlled microwave synthesizer (BiotageInitiator+SP Wave model (0.200W at 2.45 GHz, capped at 60W duringsteady state) for 5 min (attains temperature 100 C and 2 bar pressure). The final product (3o) was isolated by absorbing the reaction mixture into silica geland purifying it by column chromatography using ethyl acetate-petroleumether as the 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-Bromo-2-methoxynaphthalene, its application will become more common.

Reference:
Article; Rajendar Reddy; Rajanna; Uppalaiah; Tetrahedron Letters; vol. 54; 26; (2013); p. 3431 – 3436;,
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Adding a certain compound to certain chemical reactions, such as: 36805-97-7, name is 1,1-Di-tert-butoxy-N,N-dimethylmethanamine, 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 36805-97-7, Recommanded Product: 36805-97-7

d) 2-Chloro-6-methoxymethyl-isonicotinic acid tert-butyl ester2-Chloro-6-methoxymethyl-isonicotinic acid (3.48 g, 15.5 mmol, 1 eq) is dissolved in toluene (60 ml) and heated to 80 0C. N,N-dimethylformamid-di-tertbutylacetal (7.53 ml, 31 mmol, 2 eq) is added in portions over 8 hours. The reaction mixture is then diluted with TBME and washed with aqueous sodium bicarbonate. The organic layer is dried with sodium sulfate, filtered and concentrated to give the product. MS (ES+): 258 = [M+H]+

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; NOVARTIS AG; NOVARTIS PHARMA GmbH; WO2008/9750; (2008); A2;,
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