Ethers-buliding-blocks

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. 27060-75-9, name is 1-Bromo-4-methoxy-2-methylbenzene belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. SDS of cas: 27060-75-9

This experiment was carried out four times. Tributyl(methoxy)stannane (400 g, 1.24 mol), 1-bromo-4-methoxy-2-methylbenzene (250 g, 1.24 mol), prop-1-en-2-ylacetate (187 g, 1.87 mol), palladium(ll) acetate (7.5 g, 33 mmol) and tri-otolylphosphine (10 g, 33 mmol) were stirred together in toluene (2 L) at 100 00 for 18 hours. After it had cooled to room temperature, the reaction mixture was treated with aqueous potassium fluoride solution (4 M, 400 mL) and stirred for 2 hours at 40 00. The resulting mixture was diluted with toluene (500 mL) and filtered through diatomaceousearth; the filter pad was thoroughly washed with ethyl acetate (2 x 1.5 L). The organic layer from the combined filtrates was dried over sodium sulfate, filtered, and concentrated in vacuo. Purification via silica gel chromatography (Gradient: 0% to 5% ethyl acetate in petroleum ether) provided the product as a yellow oil. Combined yield:602 g, 3.38 mol, 68%. LCMS m/z 179.0 [M+H]. 1H NMR (400 MHz, CDCI3) oe 7.05 (d,J=8.3 Hz, 1H), 6.70-6.77 (m, 2H), 3.79 (5, 3H), 3.65 (5, 2H), 2.22 (5, 3H), 2.14 (5, 3H).

The synthetic route of 27060-75-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PFIZER INC.; GRAY, David Lawrence Firman; DAVOREN, Jennifer Elizabeth; DOUNAY, Amy Beth; EFREMOV, Ivan Viktorovich; MENTE, Scot Richard; SUBRAMANYAM, Chakrapani; WO2015/166370; (2015); A1;,
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Application of 946-80-5, 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. 946-80-5, name is Benzyl Phenyl Ether belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

A. A 1.12 portion of anhydrous DMF is cooled to 0 C. and treated dropwise with 2.06 g of sulfuryl chloride. The resulting suspension is stirred for 30 min., then treated with 1.50 g of benzyl phenyl ether. The mixture is heated at 90 C. for 3 h, then cooled, extracted with brine and methylene chloride, and dried over MgSO4. Chormotography on silica gel (i-PrOH/hexanes) yields 4-benzyloxybenzenesulfonyl chloride.

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, Benzyl Phenyl Ether, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Vertex Pharmaceuticals Incorporated; US5723490; (1998); A;,
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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. 1758-46-9, name is 2-Phenoxyethylamine, A new synthetic method of this compound is introduced below., Computed Properties of C8H11NO

General procedure: Et3N (4.3 mmol) and 97% EtOCOCl (4.3 mmol) in dry CHCl3(25 mL) were added to a solution of the suitable carboxylic acid 24a,24b or 25 (4.3 mmol) at 0 C. After 30 min at 0 C under stirring asolution of the suitable amine (2-phenoxyethanamine, 2-(2-methoxyphenoxy)ethanamine [37], 2-(2,6-dimethoxyphenoxy)ethanamine [38], or 1-(2-methoxyphenyl)piperazine) (4.3 mmol)in dry CHCl3 (10 mL) was added and the reaction mixture was left atroom temperature for 3 h. The solution was washed with 2 N HCl and 2 N NaOH. The organic layer was dried over Na2SO4. After evaporation of the solvent the residue was purified by column chromatography eluting with cyclohexane/EtOAc (7:3).

The synthetic route of 1758-46-9 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Del Bello, Fabio; Bonifazi, Alessandro; Giorgioni, Gianfabio; Quaglia, Wilma; Amantini, Consuelo; Morelli, Maria Beatrice; Santoni, Giorgio; Battiti, Francisco O.; Vistoli, Giulio; Cilia, Antonio; Piergentili, Alessandro; European Journal of Medicinal Chemistry; vol. 168; (2019); p. 461 – 473;,
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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. 27191-09-9, name is 3-Methoxyaniline hydrochloride, A new synthetic method of this compound is introduced below., Computed Properties of C7H10ClNO

General procedure: To a solution of compound 27 (1 mmol) in 20 mL dried CH2Cl2 was added oxalyl chloride (4 mmol). The mixture was stirred at room temperature for 24 h under argon and then concentrated to dryness under reduced pressure. Hexane (3 * 10 mL) was added to the residue, then concentrated under vacuum to dryness. To a dried CH2Cl2 (20 mL) solution of aniline hydrochloride, 4-methoxyaniline hydrochloride, 4-(trifluoromethoxy)aniline hydrochloride, 4-fluoroaniline hydrochloride, 4-chloroaniline hydrochloride, 4-bromoaniline hydrochloride, 3-methoxyaniline hydrochloride, 3-chloroaniline hydrochloride, 2-methoxyaniline hydrochloride, 2-chloroaniline hydrochloride, benzylamine hydrochloride, 4-methoxybenzylamine hydrochloride, N,N-Dimethylethylenediamine, or pyrrolidine (1.5 mmol) was added to the above acid chloride in the presence of triethylamine (3.0 mmol). The reaction mixture was stirred at room temperature for 3 h under argon and then concentrated. The obtained residue was dissolved in 2:1 MeOH/CH2Cl2 (15 mL) and then NaOMe was added until pH = 10. After stirred at r.t. for 12 h, the solution was neutralized with Dowex 50 * 8 (H+) resin until pH = 7, filtered and concentrated under vacuum. Then the residue was purified by silica gel column chromatography (CH2Cl2-MeOH, 6:1) to give compounds 4-18, respectively.

The synthetic route of 27191-09-9 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Liao, Yixian; Chen, Lizhu; Li, Sumei; Cui, Zi-ning; Lei, Zhiwei; Li, Hui; Liu, Shuwen; Song, Gaopeng; Bioorganic and Medicinal Chemistry; vol. 27; 18; (2019); p. 4048 – 4058;,
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Synthetic Route of 103291-07-2, 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. 103291-07-2, name is 4-Bromo-1-fluoro-2-methoxybenzene, This compound has unique chemical properties. The synthetic route is as follows.

To a solution of 4-bromo-1-fluoro-2-methoxybenzene (Aldrich) (20 g, 97.5 mmol), methyl methacrylate (Aldrich) (24 g, 244 mmol) in DMF (150 ml) was added Pd(OAc)2 (2.2 g, 9.7 mmol), Bu3N (45 g, 244 mmol), TOP (8.9 g, 29 mmol). The resulting mixture was degassed and charged with N2 three times, and then stirred at 100 C. for 5 hrs. After cooling down, the mixture was filtered over celite. The filtration was evaporated under reduced pressure to the residue, which was treated with water and ethyl acetate. The separated organic layer was washed with brine (*3), dried over anhydrous Na2SO4 and filtered. The filtration was concentrated under reduced pressure to give the crude product, which was purified by column chromatography on silica gel eluting with 0?10% ethyl acetate in hexanes to afford the title compound as a yellow solid. LC-MS: Rt=1.48 mins; MS m/z [M+H]+ 225.0; Method 5-95AB 1.5minLC_v003

The chemical industry reduces the impact on the environment during synthesis 4-Bromo-1-fluoro-2-methoxybenzene. I believe this compound will play a more active role in future production and life.

Reference:
Patent; NOVARTIS AG; CHEN, Shuhui; HE, Haiyang; LAGU, Bharat; QIN, Hua; WU, Chengde; XIAO, Yisong; US2015/183802; (2015); A1;,
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Electric Literature of 645-36-3, A common heterocyclic compound, 645-36-3, name is 2,2-Diethoxyethanamine, molecular formula is C6H15NO2, 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.

In the three-necked flask has been added9.94 g of aminoacetaldehyde diethyl acetal (0.074 mol)20.6 g of S-methylisothiourea sulfate (0. 074 mol) and 16. 5 ml of water, and then warmed to 110 C. After stirring for 1. 5 h, the reaction was stopped. The solvent was distilled off, followed by addition of 13. 0 g of 37% hydrochloric acid (mass percent, the same as in the following examples) to the reaction solution, stirred at 65 C for 1 h, 50 ml of water was added, the solvent was evaporated, 30 ml of acetone was added to precipitate pale yellow crystals The The crude product was recrystallized from 30 ml of ethanol-water,The resulting white powdery solid 2-aminoimidazolyl sulfate 15. 90 g, yield 81. 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; Yancheng Institute Of Technology; Zhao, LingLing; Dai, Yong; Qi, gang; (5 pag.)CN103396369; (2016); B;,
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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. 216067-66-2, name is O-(2,4-Dimethoxybenzyl)hydroxylamine, A new synthetic method of this compound is introduced below., Safety of O-(2,4-Dimethoxybenzyl)hydroxylamine

INTERMEDIATE 2 Preparation of 5- (4-Formvl-phenvl)-furan-2-carboxylic acid (2, 4-dimethoxv-benzyloxv)- amide 0- (7-Azabenzotriazol-1-yl)-N, N, N’, N’-tetramethyluronium hexafluorophosphate (HATU, 6.6 g) and 5- (4-Formyl-phenyl)-furan-2-carboxylic acid (3.14 g, was made by method analogous to INTERMEDIATE 1, but suing appropriate starting material and the methyl ester was hydrolyse to the acid) were added to the solution of 0- (2, 4-Dimethoxy-benzyl)- hydroxylamine (2.64 g) and DIEA (6.26 mL) in DMF (60 mL) at 0C, and stirred at the same temperature for about 1h. After the TLC showing the substances disappeared, saturated sodium bicarbonate was added to the reaction mixture, and stirred for additional 1h, worked up to give a yellow oil. The oil was dissolved in small amount of THF, then diluted with water (the oil appeared again), under vigorous stirring ether was added, the oil solidified soon. The solid was filtered and washed with water and ether. The solid was recrystallized from methanol/ether to give 3.8 g of 5- (4-Formyl-phenyl)-furan-2-carboxylic acid (2, 4-dimethoxy-benzyloxy)-amide.

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; S*BIO PTE LTD; WO2005/40161; (2005); 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. 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, A new synthetic method of this compound is introduced below., Computed Properties of C5H11BrO2

To a suspension of 5-bromo-3-methylpyrazin-2-amine (4.63g, 24.6 mmol) in iPrOH (30 ml) was added l-bromo-2,2-dimethoxypropane (3.66 ml, 27.1 mmol), pyridinium para-toluene sulfonic acid (0.62g, 2.5 mmol) and the mixture heated to 65C in a sealed tube for 36h. The reaction was diluted with DCM, washed with saturated sodium hydrogen carbonate solution, dried (Na2S04) and concentrated. Purification by flash column chromatography on silica gel (EtOAc: Hept 1:4-1: 1) afforded the titled product as a light yellow crystalline solid (3.96 g, 71%). MS (m/e): 226.1 (M+H+, Br)

The synthetic route of 126-38-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; GREEN, Luke; PINARD, Emmanuel; RATNI, Hasane; WILLIAMSON, Patrick; (95 pag.)WO2015/197503; (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. 162705-07-9, name is (Z)-2-Methoxy-5-(3,4,5-trimethoxystyryl)aniline, A new synthetic method of this compound is introduced below., Safety of (Z)-2-Methoxy-5-(3,4,5-trimethoxystyryl)aniline

General procedure: To a solution of substituted benzyl-1H-1,2,3-triazole-4-carboxylic acids (18a-e, 1 mmol) in dry dimethylformamide, EDCI (1.2 mmol) and HOBT (1.2 mmol) were added and the reaction mixture was stirred for 20 min. To the reaction mixture, amino Z-stilbenes (16, 17, 1 mmol) was added and stirred at room temperature for 12 h. The solvent was removed and the residue was dissolved in dichloromethane (50 mL), washed with 5% HCl (2 20 mL), 5% NaHCO3 (2 20 mL), and brine solution (20 mL). The organic layer was separated, dried over anhydrous Na2SO4, filtered, and the solvent was removed to give a crude product which was purified by chromatography (ethyl acetate/hexanes) to givethe desired product (6a-e, 7a-e).

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; Kamal, Ahmed; Shaik, Bajee; Nayak, V. Lakshma; Nagaraju, Burri; Kapure, Jeevak Sopanrao; Shaheer Malik; Shaik, Thokhir Basha; Prasad; Bioorganic and Medicinal Chemistry; vol. 22; 19; (2014); p. 5155 – 5167;,
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Some common heterocyclic compound, 1535-75-7, name is 2-(Trifluoromethoxy)aniline, molecular formula is C7H6F3NO, 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. Recommanded Product: 2-(Trifluoromethoxy)aniline

Synthesis Example 32 Synthesis of 2-Trifluoromethoxybenzenesulfonamide [Compound (III-12)] Using 2-trifluoromethoxyaniline [Compound (XXV-12)] (5 g, 0.0282 mmol), 7.3 g (percent yield: 99.4%) of 2-trifluoromethoxybenzenesulfonyl chloride [Compound (XXII-12)] was synthesised according to the process of Synthesis Example 31 (3). Thereafter, the compound (III-12) was synthesised using 3.9 g (0.0149 mol) of the Compound (XXII-12) according to Synthesis Example 31 (3). White solid, m.p.: 183-184 C., yield: 2.09 g, percent yield: 46.2%. IR KBr cm-1: 3382, 3268, 1482, 1344, 1230, 1164, 768. 1H-NMR (60 MHz, d6-DMSO, delta): 7.2-7.65 (5H, m, aromatic ring H*3, NH2), 7.86 (1H, dd, J=2Hx, 8 Hz, aromatic ring H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1535-75-7, its application will become more common.

Reference:
Patent; Kureha Kagaku Kogyo K.K.; US6610853; (2003); B1;,
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