Tag: M.W=100-200

Adding a certain compound to certain chemical reactions, such as: 3544-25-0, name is 2-(4-Aminophenyl)acetonitrile, belongs to nitriles-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 3544-25-0, HPLC of Formula: C8H8N2

To a solution of 2-(4- m op^r^l) eton ^ (3D g, 22.70 mmol) i 40 mL dimemylformamide cooled with ice bathwas added N-bromosuccinimide (4.04 g, 22.70 mmol) in portions . The mixture was stirred at 0 for 30 minutes and then at a b ie t tenperature for 1 hour. Waterwas added. The precipitate was collected by filtranon, washed with water, and dried in a vacuum oven at 40 “C to give the title compound (35fjg, 16.9 mmol. 74.4 % yield).

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-(4-Aminophenyl)acetonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ABBVIE INC.; ABBVIE PHARMACEUTICAL TRADING (SHANGHAI) CO., LTD.; FIDANZE, Steven D.; LIU, Dachun; MANTEI, Robert A.; MCDANIEL, Keith F.; PRATT, John; SHEPPARD, George S.; WANG, Le; BOGDAN, Andrew; HOLMS, James H.; DIETRICH, Justin D.; MARJANOVIC, Jasmina; HASVOLD, Lisa A.; DAI, Yujia; WO2014/139324; (2014); A1;,
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Some common heterocyclic compound, 69395-13-7, name is 4-(2-Hydroxyethyl)benzonitrile, molecular formula is C9H9NO, 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: 69395-13-7

To a solution of 4- (2- hydroxyethyl) benzonitrile (120 mg, 0.816 mmol) in acetone (3 ML), Jone’s reagent (1. 5ML, 4.005 mmol) was added.. After stirring for 10 minutes at room temperature, the crude reaction mixture was poured into water (10 ML) and extracted with CHC13 (6 x 10 mL). Combined organics were dried over magnesium sulfate, filtered, and concentrated to give (4-cyanophenyl- acetic acid which was used without purification. To a solution of (4-cyanophenyl) acetic acid (131 MG, 0.816 mmol) in ETOH (0.5 ML) at 0C was bubbled HCl (g) until saturation. Reaction mixture was allowed to warm to room temperature slowly. After overnight stirring, the crude reaction mixture was concentrated in vacuo. This residue was taken up in ETOH (4 ML) and ethylene diamine (0.1 mL, 1.49 mmol) was added. After stirring at room temperature for two hours, the crude reaction mixture was concentrated under reduced pressure and then re-dissolved in DMF (2 mL). To this solution was added 1M NAOH (2 mL, 2 mmol) and the reaction stirred at room temperature for three hours. Crude reaction mixture was neutralized with 1M HC1 to a pH 6 and extracted with CHC13 (4 x 15 ML). Product was found in the water layer, so combined all layers and concentrated in vacuo, re-dissolved in CHCL3/MEOH, and filtered to remove precipitate. Concentration of the filtrate gives [4- (4, 5-dihydro-lH-imidazol-2-yl) phenyl] acetic acid, which was used without further purification. LCMS (ES) 205.1 771/Z (M +H) +

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 69395-13-7, its application will become more common.

Reference:
Patent; MERCK & CO., INC.; WO2004/54584; (2004); A1;,
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Application of 3759-28-2, 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. 3759-28-2, name is 2-(Cyanomethyl)benzonitrile, This compound has unique chemical properties. The synthetic route is as follows.

A solution of 2-cyanophenylacetonitrile (1 g, 7 mmol) and hydroxylamine (1.7 cm3, 28.1 mmol, 4 eq) in EtOH (25 cm3) were stirred under reflux for 60 hours, after which the volatiles were removed under reduced pressure. The residue was recrystallized from EtOH-water (1:4, 15 cm3) to give the cyclised product 3-aminoisoquinolin-1(4H)-one oxime or 3-(hydroxyamino)-3,4-dihydroisoquinolin-1-amine (1.15 g, 85.9%) as a solid, mp 92.5-94.5 C.

The chemical industry reduces the impact on the environment during synthesis 2-(Cyanomethyl)benzonitrile. I believe this compound will play a more active role in future production and life.

Reference:
Patent; Lee, Wai Mun; US2009/112024; (2009); A1;,
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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. 32703-80-3, name is 4-(tert-Butyl)phthalonitrile, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: 4-(tert-Butyl)phthalonitrile

A mixture of 3.0 g (16.3 mmol) of 4-tert-butylphthalonitrile and 0.12 g (17.1 mmol) of lithium in 20 mL of anhydrous quinoline was re uxed for 3 h. The mixture was cooled, 30 mL of concentrated aqueous HCl and 150 mL of water were added with stirring, and the precipitate was ltered off, washed with water, and dried. The product was dissolved in chloroform and subjected to chromatography on aluminum oxide (activity grade III). The eluate was evaporated, and compound 1 was precipitated with methanol. Yield 0.8 g (36.2%), R f 0.52 (CHCl 3 -hexane, 3 : 1). Electronic absorption spectrum (CHCl 3 ), lambda max , nm (log epsilon): 342 (4.81), 603 (4.41), 645 (4.59), 664 (5.03), 701 (5.10). 1 H NMR spectrum (CDCl 3 ), delta, ppm: 2.60 br.s (2H, NH), 1.90 m (36H, t-Bu), 8.15 m (4H, 5-H), 8.86 m (4H, 3-H), 9.16 m (4H, 6-H). Mass spectrum (MALDI-TOF): m/z 739.156 [M] + .

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 32703-80-3.

Reference:
Article; Dmitrieva, O. A.; Ivanova, Yu. B.; Khrushkova, Yu. V.; Lyubimova, T. V.; Mamardashvili, N. Zh.; Semeikin, A. S.; Russian Journal of General Chemistry; vol. 90; 5; (2020); p. 852 – 857; Zh. Obshch. Khim.; vol. 90; 5; (2020); p. 760 – 766,6;,
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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. 4110-35-4, name is 3,5-Dinitrobenzonitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. category: nitriles-buliding-blocks

1A. Formula 103 where R1 is Pyridin-3-yl and Y is CN [0094] A solution of 1 equivalent (eq., 25.42 g, 131.6 mmol)) of 1,3 dinitro-5-cyanobenzene in 1.75 M DMF (75 mL),1 eq. 3-hydroxypyridine (12.52g, 131.6 mmol) and 2 eq. potassium carbonate (36.38 g, 263 mmol) was heated to 60Covernight. The reaction mixture was warmed to 95C for an additional 48 hours. The reaction mixture was diluted withEtOAc, washed with H2O, sat. NaHCO3, and brine, dried over Na2SO4 and concentrated in vacuo. Purification bychromatography over silica with 25% EtOAC/Hexane as the eluant afforded 10.04g of the desired compound of Formula103, 3-(pyridin-3-yloxy)-5-cyano-1-nitrobenzene, as a solid (32% yield).

The synthetic route of 4110-35-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Cytokinetics, Inc.; MALIK, Fady; TOMASI, Adam, Lewis; FENG, Bainian; KRAYNACK, Erica, Anne; ELIAS, Kathleen; LU, Pu-Ping; SMITH, Whitney, Walter; QIAN, Xiangping; MORGANS, David, J., Jr.; EP1503986; (2015); B1;,
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Synthetic Route of 623-00-7, These common heterocyclic compound, 623-00-7, name is 4-Bromobenzonitrile, 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.

General procedure: A mixture of aryl silane (0.5 mmol), aryl bromides (0.5 mmol), PdCl2(MeCN)2 (5 mol%), and CsF (0.5 mmol) was stirred at 100oC for 6 h in NMP under CO (1atm) (5 mL). Afterwards, 2 mL water was added to the reaction solution and then filtered through a filter paper and the solution was extracted by Et2O (2 mL) for three times. The organic phase was combined and evaporated under reduced pressure. The residue was purified on a SiO2 column to afford the desired product(ethyl acetate/hexane).

The synthetic route of 623-00-7 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Chang, Sheng; Jin, Ying; Zhang, Xiu Rong; Sun, Yong Bing; Tetrahedron Letters; vol. 57; 19; (2016); p. 2017 – 2020;,
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Adding a certain compound to certain chemical reactions, such as: 85363-04-8, name is N-(tert-Butoxycarbonyl)-2-aminoacetonitrile, belongs to nitriles-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 85363-04-8, Computed Properties of C7H12N2O2

N-Boc-aminoacetonitrile (40.2 g, 257.4 mmol) and N-acetylcysteine (42.0 g, 257.4 mmol) were dissolved in methanol (300 mL) at 60 C. and ammonia was passed through for 18 h. The solvent was removed in vacuo. After ion exchange chromatography (Amberlite IRA-400 (AcOH)) and recrystallisation from acetone, 28.4 g (53%) of the sub-title compound was obtained as a white solid. [0922] 1H NMR (300 MHz, CD3OD) delta4.41 (t, J=4.9 Hz, 1H), 4.01 (s, 2H), 2.91 (d, J=5.0 Hz, 2H), 2.01 (s, 3H), 1.46 (s, 9H)

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; Inghardt, Tord; Johansson, Anders; Svensson, Arne; US2004/19033; (2004); A1;,
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Reference of 26391-06-0, 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. 26391-06-0, name is 2-Cyano-N,N-diethylacetamide, This compound has unique chemical properties. The synthetic route is as follows.

General procedure: Typical procedure for the synthesis of alpha-cyano N-aryl ketene-N,S-acetals 1 (with 1a as an example). To a solution of ethyl cyanoacetate (10.0 mmol) in DMF (30 mL) at room temperature was added potassium carbonate (20.0 mmol) in one portion and the mixture was stirred for 1 h at room temperature. Phenyl isothiocyanate (10.0 mmol) was then added dropwise and the mixture was stirred for 2 h at room temperature. Then 1,2-dibromoethane (10 mmol) was added dropwise. The reaction was quenched with 200 mL of H2O after the mixture was further stirred for 6 h at room temperature. The resulting mixture was extracted with dichloromethane (3×30 mL), and the combined organic phase was washed with water, dried over anhydrous MgSO4, ltered, and evaporated in vacuo. The crude product was puried by silica gel chromatography (petroleum ether: diethyl ether=10:1) to give 1a (2.356 g) as a white solid.

The chemical industry reduces the impact on the environment during synthesis 2-Cyano-N,N-diethylacetamide. I believe this compound will play a more active role in future production and life.

Reference:
Article; Wu, Chenwei; Huang, Peng; Sun, Zhongqiao; Lin, Mi; Jiang, Yuchun; Tong, Jian; Ge, Chunhua; Tetrahedron; vol. 72; 11; (2016); p. 1461 – 1466;,
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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. 646-20-8, name is Heptanedinitrile, This compound has unique chemical properties. The synthetic route is as follows., Product Details of 646-20-8

Example 1 5-(5-AMINO-1H-PYRAZOL-4-YL)-PENTANENITRILE (2) To a solution of 1,5-dicyanopentane (1) (6.5 mL, 50 mmol) and ethyl formate (20 mL, 250 mmol) in dry diethyl ether (200 mL), sodium hydride (60%, 4 g. 100 mmol) was added. The re-action mixture was refluxed for four h, cooled to room temperature filtered and rinsed with ether and dried. To a solution of above obtained white solid in 80% ethanol/water was added hydrazine hydrochloride (6.29 g. 61 mmol). The reaction mixture was adjusted to pH 3 with concentrated HCl and then refluxed for 2 h, cooled to room temperature and neutralized with NaHCO3. Solvent was removed under reduced pressure and the residue was dried in vacuum. The residue was suspended in ethanol and filtered. The filtrate was concentrated, dissolved in 5% MeOH/CH2C12, filtered through a short silica gel column, rinsed with 5% MeOH/CH2C12 and concentrated to give 5-(5-amino-1H-pyrazol-4-yl)-pentanenitrile 2 as a oil. LCMS(API-ES) m/z: 164.2, 165.1 [M+H+]; 163.1 [M-H+].

According to the analysis of related databases, 646-20-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Chu, Shaosong; Nie, Zhe; Perretta, Carin L.; Erickson, Philip Eugene; US2008/70893; (2008); A1;,
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Adding a certain compound to certain chemical reactions, such as: 53312-80-4, name is 4-Amino-2-fluorobenzonitrile, belongs to nitriles-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 53312-80-4, Formula: C7H5FN2

Preparation 5; 4-Amino-2-fluorobenzoic acid; A mixture of 4-amino-2-fluorobenzonithle (25g, 0.183mmol) and potassium hydroxide (125g, 2.23mol) in water (35OmL) and industrial methylated spirit (5OmL) was heated at reflux for 48 hours. The solvent was evaporated in vacuo and the residue diluted with water (30OmL) and washed with DCM (20OmL). The aqueous phase was acidified to pH = 5.5 with concentrated HCI and the resultant precipitate collected by filtration to yield the title compound as a beige solid (23.94g, 0.154mol).

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; PFIZER LIMITED; ICAGEN, INC.; MARKWORTH, Christopher John; MARRON, Brian Edward; SWAIN, Nigel Alan; WO2010/35166; (2010); A1;,
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