Author: Jessica.F

Application of 34916-10-4, These common heterocyclic compound, 34916-10-4, name is 4-Oxo-cyclohexanecarbonitrile, 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 A: [1-(4-Cyano-cyclohexyl)-azetidin-3-yl]-carbamic acid tent-butyl ester To a solution of 4-oxo-cyclohexanecarbonitrile (2.66 g, 21.5 mmol, prepared according to the procedure from Tremblay, Maxime, PCT Int. Appl. (2007), WO 2007013848) and azetidine-3-yl-carbonic acid tert-butyl ester (Beta Pharma, 3.70 g, 21.5 mmol) in DCM (20 mL) was added NaBH(OAc)3 (Aldrich, 6.84 g, 32.25 mmol). The resulting mixture was stirred at rt for 6 h and quenched with saturated NaHCO3. Workup and purification by column chromatograph (eluent: 80% EtOAc in hexanes to EtOAc only) gave the product as a mixture of cis/trans isomers. LC/MS: 280.2 [M+H].

The synthetic route of 34916-10-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Zhang, Xuqing; Hufnagel, Heather Rae; Cai, Chaozhong; Lanter, James C.; Markotan, Thomas P.; Sui, Zhihua; US2010/267688; (2010); 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. 1885-38-7, name is (E)-Cinnamonitrile, A new synthetic method of this compound is introduced below., HPLC of Formula: C9H7N

General procedure: Cu(NO3)2·3H2O (0.10 mmol), the appropriate nitrile 1 (1.0 mmol), NaN3(2.0 mmol) and DMF (1 mL) were added to a 50 mL round-bottomed flask equipped with a magnetic stirrer. The reaction mixture was stirred in an oil bath at 120 C for 16 h. After cooling to room temperature, the reaction was acidified HCl (3 M, pH 1.0). Ethyl acetate (~30 mL) wasadded, and stirring was continued until no solid was present. The organic layer was separated, and the aqueous layer was extracted with ethylacetate twice. The combined organic layers were washed with saturatedbrine, and concentrated in vacuo. The residue was purified by columnchromatography (silica gel, EtOAc-PE) to afford the product 2.

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; Tao, Chuanzhou; Wang, Bin; Sun, Lei; Yi, Jiuyin; Shi, Dahua; Wang, Jian; Liu, Weiwei; Journal of Chemical Research; vol. 41; 1; (2017); p. 25 – 29;,
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Synthetic Route of 185147-08-4, 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. 185147-08-4, name is 4-Fluoro-3-methylbenzonitrile, This compound has unique chemical properties. The synthetic route is as follows.

6.02.03.05 4-Fluoro-3-methyl-benzimidic acid ethyl ester Hydrogen chloride gas was passed through a solution of 40 g 4-fluoro-3-methylbenzonitrile in 250 mL ethanol. The reaction was stirred for 1 h at RT and for 30 min. at 40 C. Then, the solvent was evaporated, diethyl ether was added and the precipitate was filtered and dried under nitrogen. The hydrochloride was dissolved in ethanol and ammonia gas was passed through the solution. The solvent was removed and the residue was suspended in n-hexane. The suspension was filtered through silica gel and the filtrate was concentrated to yield 3.7 g of the desired product. Rt: 0.99min (method K), (M+H)+: 182

The chemical industry reduces the impact on the environment during synthesis 4-Fluoro-3-methylbenzonitrile. I believe this compound will play a more active role in future production and life.

Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; GRAUERT, Matthias; BISCHOFF, Daniel; DAHMANN, Georg; KUELZER, Raimund; RUDOLF, Klaus; WELLENZOHN, Bernd; WO2013/83741; (2013); 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. 57381-51-8, name is 4-Chloro-2-fluorobenzonitrile, This compound has unique chemical properties. The synthetic route is as follows., HPLC of Formula: C7H3ClFN

General procedure: Into an oven-dried flask equipped with a magnetic stir bar was added aryl fluoride (1.00 g, 1.0 eq.), Na2S (1.1 eq.) and DMF (5 mL) under argon. The reaction mixture was stirred at room temperature for 1 h. Then 1 M NaOH (50 mL) was added and was washed with CH2Cl2 (2 x 25 mL). The aqueous layer was acidified to pH ~ 1-2 with 6 N HCl and extracted with CH2Cl2 (2 x 50 mL). The combined organic layer was washed with brine (50 mL), dried over MgSO4, filtered and concentrated under reduced pressure to provide a crude residue. To the residue was added 10% HCl (40 mL) and cooled with an ice-water bath. Then zinc dust (4 g) was added and the mixture was stirred for 1 h. Then EtOAc (100 mL) was added and the mixture was stirred for an additional 30 minutes. The organic layer was separated and washed with water (40 mL) and brine (40 mL), dried over MgSO4, filtered and concentrated to provide the desired product with satisfactory purity.

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 57381-51-8.

Reference:
Article; Taldone, Tony; Patel, Pallav D.; Patel, Hardik J.; Chiosis, Gabriela; Tetrahedron Letters; vol. 53; 20; (2012); p. 2548 – 2551;,
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Adding a certain compound to certain chemical reactions, such as: 127946-77-4, name is 1-Amino-1-cyclopropanecarbonitrile hydrochloride, 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 127946-77-4, Product Details of 127946-77-4

To prepare (2S,4R)-4-[2-chloro-4-((5)-2,2,2-trifluoro-1-methyl-ethoxy)-benzenesulfonyl]-1-(1-trifluoromethyl-cyclopropanecarbonyl)-pyrrolidine-2-carboxylic acid (1-cyano-cyclopropyl)-amide, example 183c (200 mg) was dissolved in DMF (2.0 mL). HATU (420 mg), DIEA (143 mg) and 1-amino-1-cyclopropane carbonitrile hydrochloride were added to the solution. The obtained suspension was stirred at ambient temperature for 2 h. After that the solvent was evaporated under reduced pressure to dryness. The residue was dissolved in CH2Cl2 (25 ml), was extracted in succession with aqueous 0.5 NHCl-solution, aqueous 10% Na2CO3-solution and brine. The water layers were washed with totally CH2Cl2 (50 ml), the combined organic layers were dried over Na2SO4, filtered and evaporated. The residue was purified over silica gel chromatography with n-heptan: AcOEt to yield 130 mg (59%) of the title compound as colorless amorphous solid. MS (ESI): m/z=602.1 [M+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, 1-Amino-1-cyclopropanecarbonitrile hydrochloride, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Sanchez, Ruben Alvarez; Banner, David; Ceccarelli, Simona M.; Grether, Uwe; Haap, Wolfgang; Hartman, Peter; Hartmann, Guido; Hilpert, Hans; Kuehne, Holger; Mauser, Harald; Plancher, Jean-Marc; US2010/267722; (2010); A1;,
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Synthetic Route of 13531-48-1, These common heterocyclic compound, 13531-48-1, name is Methyl 3-cyanobenzoate, 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: To a round-bottom flask (25 mL) was added phenylhydrazine hydrochloride 1a (43 mg, 0.3 mmol), benzonitrile 2a (0.3 mL, 3 mmol), t-BuONO (53 muL, 0.45 mmol), I2 (38 mg, 0.15 mmol), the mixture was well stirred for 6 h at 25 oC (the whole process was closely monitored by TLC). Then the reaction mixture was purified by a flash silica gel column chromatography (eluent: Petroleum ether (PE)/Ethyl acetate (EA) = 10:1) to give N-phenylbenzamide 3a as a white solid (38 mg, 64%).

Statistics shows that Methyl 3-cyanobenzoate is playing an increasingly important role. we look forward to future research findings about 13531-48-1.

Reference:
Article; Zhang, Zhiguo; Li, Xiang; Li, Yinghua; Guo, Yan; Zhao, Xunan; Yan, Yan; Sun, Kai; Zhang, Guisheng; Tetrahedron; vol. 75; 26; (2019); p. 3628 – 3635;,
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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. 1009-35-4, name is 4-Fluoro-3-nitrobenzonitrile, A new synthetic method of this compound is introduced below., HPLC of Formula: C7H3FN2O2

Potassium hexamethyldisilazane [0.5 M in toluene] (12.04 mL, 24.08 mmol) was added to a solution of isopropanol (0.921 mL, 12.04 mmol) in tetrahydrofuran (20 mL) at 0° C. and stirred for 10 minutes. The resulting solution was added dropwise to a solution of commercially available 4-fluoro-3-nitrobenzonitrile at room temperature and stirred for several hours. Water was added and the product was extracted with ethyl acetate, dried with sodium sulfate and evaporated in vacuo to give the title compound

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; WANG, Aihua; Zhang, Yan; Leonard, Kristi Anne; Hawkins, Michael; Tounge, Brett Andrew; Maharoof, Umar S.M.; Barbay, Joseph Kent; US2012/129811; (2012); A1;,
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Adding a certain compound to certain chemical reactions, such as: 53312-81-5, name is 5-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 53312-81-5, Computed Properties of C7H5FN2

To a solution of 5-amino-2-fluorobenzonitrile (3.75 g) and Et3N (4.22 mL) in CH2Cl2 (100 mL) was added ethyloxalyl chloride (3.08 mL) in a dropwise fashion over 10 minutes. The reaction was stirred at RT under N2 for 1.5 h. The reaction mixture was washed with water (2×50 mL) and brine (1×50 mL), filtered through phase separatory paper and evaporated. The residue was dissolved in 20 mL of CH2Cl2 and 100 mL of hexane was added. The solution was allowed to stand at RT for the weekend. The precipitate was filtered, rinsed with hexane, and dried under vacuum to give 5.43 g of 1-(3-cyano-4-fluorophenyl)-oxoacetic acid ethyl ester. 1H NMR (CDCl3) delta1.44 (t, 3H, J=7.2 Hz, OCH2CH3), 4.44 (q, 2H, J=7.0 Hz, OCH2CH3), 7.26 (t, 1H, J=3.8 Hz, aromatic H), 7.82 (m, 1H, aromatic H), 8.04 (m, 1H, aromatic H), 8.97 (bs, 1H, NH). DCI mass spectrum z (rel. intensity) 237.1 (M+H, 6.6), 254.0 (M+Na, 100).

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, 5-Amino-2-fluorobenzonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; DuPont Pharmaceuticals Company; US6339099; (2002); B1;,
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Reference of 3441-01-8,Some common heterocyclic compound, 3441-01-8, name is 3-Cyanobenzamide, molecular formula is C8H6N2O, 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.

The precipitated crystals were collected through filtration, washed with water, and dried, to thereby obtain 4.78 g of m-cyanobenzoic acid (yield 94percent, based on m-cyanobenzamide). The m-cyanobenzoic acid obtained had a purity of 98percent.

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

Reference:
Patent; Showa Denko Kabushiki Kaisha; US6433211; (2002); B1;,
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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. 179897-89-3, name is 5-Bromo-2-fluorobenzonitrile, A new synthetic method of this compound is introduced below., Application In Synthesis of 5-Bromo-2-fluorobenzonitrile

(1) 5-bromo-2-fluoro-1-cyanobenzene (II, 3 g, 15 mmol) under N2 protection,Sodium sulfide (1.3 g, 16.5 mmol) was reacted in DMF (30 mL) at room temperature for 5 h.Add 300 mL of sodium hydroxide solution (1 mol/L) and stir for 0.5 h.Wash with dichloromethane (300 mL × 2), acid phase with hydrochloric acid (6 mol / L) to pH = 2, dichloromethane (400 mL × 2),The combined organic layers were washed with brine, dried over anhydrous magnesium5-bromo-2-thio-1-cyanobenzene (III)1.0 g, yield 31.2%.

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; South China University of Technology; Li Jing; Li Xiaolei; Zhou Haiyan; Wu Fangping; Zhang Lei; (12 pag.)CN108218777; (2018); A;,
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