Category: nitriles-buliding-blocks

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., Quality Control of 5-Bromo-2-fluorobenzonitrile

II1 (1.0 g, 5 mmol) was dissolved in DMF (15 mL)K2CO3 (2.0 g, 15 mmol), tetrahydropyrrole (1.0 g, 15 mmol)The response was complete at 6C for 6 h at 86 C. Add 80 mL of water to dilute,Ethyl acetate (80 mL x 3), washed with saturated brine, dried over anhydrous magnesium sulfate,The solvent was evaporated under reduced pressure to give 1.1 g of an orange solid, 5-bromo-2-tetrahydropyrrole-benzonitrile (III7) in a yield of 97.3%.

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; Zhang Lei; Wu Fangping; Li Jing; Zou Yake; (15 pag.)CN106632245; (2017); A;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

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. 60899-34-5, name is 1-Oxo-2,3-dihydro-1H-indene-4-carbonitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C10H7NO

a 4-Thiocarbamoyl-2,3-dihydro-1H-inden-1-one A solution of 12.1 g (77 mmol) of 4-cyano-2,3-dihydro-1H-inden-1-one ?see Coll. Czechoslov. Chem. Commun. 4, 3227[(1978)] in 220 ml of pyridine and 10.6 ml (77 mmol) of triethylamine is saturated with hydrogen sulfide for 3 hours at 40 and is then stirred at the same temperature for 16 hours. The reaction mixture is cooled and then concentrated to dryness by evaporation, and 300 ml of water are added to the residue. The yellow product that has crystallized out is filtered off with suction, washed with water, dried and recrystallized from ethyl acetate. In that manner there is obtained the title compound, m.p. 197 (decomp.).

The synthetic route of 60899-34-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Novartis AG; US5840911; (1998); A;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

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. 14447-18-8, name is Benzyl cyanoacetate, A new synthetic method of this compound is introduced below., category: nitriles-buliding-blocks

Synthesis of 2-(2-(methylsulfonyl)-4-trifluoromethylbenzoyl)acetonitrile 1.10 g of magnesium chloride (11.5 mmol) in 15 ml of acetonitrile are admixed at 0 C. with 2.0 g (11.4 mmol) of benzyl cyanoacetate and 2.3 g (22.9 mmol) of triethylamine. After stirring for 20 min at 0 C., 3.27 g (11.4 mmol) of 2-(methylsulfonyl)-4-trifluoromethylbenzoyl chloride are added in portions. The mixture is stirred for 16 h at RT, acidified with 2n HCl and extracted with ether. The organic phase is dried and concentrated in a rotary evaporator. Yield 2.74 g (56%; 1H-NMR, CDCl3, 400 MHz: 14.20 (bs, 1H), 8.43 (s, 1H), 8.05 (d, 1H), 7.82 (d, 1H), 5.40 (s, 2H), 3.30 (s, 3H)) of benzyl 2-(2-(methylsulfonyl)-4-trifluoromethylbenzoyl)cyanoacetate, which, after adding 0.65 g (1 eq) of triethylamine in THF, is hydrogenated for 2 h. After filtration, the mixture is diluted with ethyl acetate and washed with 2N HCl, NaHCO3 solution and sodium chloride solution. Yield 1.41 g (75%). 1H NMR, CDCl3, 400 MHz: 8.36 (s, 1H), 8.04 (d, 1H), 7.63 (d, 1H), 4.03 (s, 2H), 3.21 (s, 3H).

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; Braun, Ralf; Willms, Lothar; Heinemann, Ines; Haeuser-Hahn, Isolde; Dietrich, Hansjoerg; Gatzweiler, Elmar; Rosinger, Christopher Hugh; US2014/342906; (2014); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

These common heterocyclic compound, 1114546-30-3, name is 4-Bromo-2-fluoro-3-methylbenzonitrile, 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. Recommanded Product: 1114546-30-3

General procedure: A mixture of 4-bromo-2-fluoro-3-methylbenzonitrile (7.00 g, 32.7mmol), potassium vinyltrifluoroborate (5.3 g, 39 mmol) and Pd(dppf)Cl2 (0.5 g, 0.7 mmol) in 70 mL of EtOH and 30mL of TEA was refluxed under Ar for 4 hours. Concentrated, the residue was purified by column chromatography(petrol ether: EtOAc = 10 :1) to afford 4-ethenyl-2-fluoro-3-methylbenzonitrile.

The synthetic route of 4-Bromo-2-fluoro-3-methylbenzonitrile has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Merck Sharp & Dohme Corp.; PASTERNAK, Alexander; BLIZZARD, Timothy; CHOBANIAN, Harry; DE JESUS, Reynalda; DING, Fa-Xiang; DONG, Shuzhi; GUDE, Candido; KIM, Dooseop; TANG, Haifeng; WALSH, Shawn; PIO, Barbara; JIANG, Jinlong; (128 pag.)EP2744499; (2016); B1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

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. 34667-88-4, name is 2-Fluoro-4-nitrobenzonitrile, A new synthetic method of this compound is introduced below., Recommanded Product: 34667-88-4

A mixture of 4-nitro-2-fluorobenzonitrile (1.83 g, 5 mmol) and iron (1.68 g, 6 mmol) in a mixture of acetic acid (40 ml) and ethyl acetate (40 ml) was refluxed for 2 hours. The solid was filtered off and the filtrate was washed with water and extracted with ethyl acetate. The organic layer was dried over magnesium sulfate, concentrated and chromatographed (dichloromethane:acetone, 95:5) to yield 4- amino-2-fluorobenzonitrile (54a) (0.653 g, 4.8 mmol, 96%).

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; THE REGENTS OF THE UNIVERSITY OF CALIFORNIA; WO2006/124118; (2006); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Electric Literature of 67515-59-7, A common heterocyclic compound, 67515-59-7, name is 4-Fluoro-3-(trifluoromethyl)benzonitrile, molecular formula is C8H3F4N, 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 9H,9’H-3,3′-bicarbazole (500 mg, 1.50 mmol), 4-fluoro-2-methylbenzonitrile (450 mg, 3.33 mmol) and K2CO3(0.99 g, 7.2 mmol) in dimethyl sulfoxide (DMSO) (6 mL) was stirredat 140 C for 12 h under nitrogen atmosphere. After cooling to roomtemperature, the mixture was poured into water, filtered and thenpurified by column chromatography over silica gel with CH2Cl2/petroleum ether (1: 1) as eluent to afford a white solid (760 mg,89%).

The synthetic route of 67515-59-7 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Cao, Xudong; Hu, Jia; Tao, Youtian; Yuan, Wenbo; Jin, Jie; Ma, Xiaoxuan; Zhang, Xinwen; Huang, Wei; Dyes and Pigments; vol. 136; (2017); p. 543 – 552;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Application of 2469-99-0, A common heterocyclic compound, 2469-99-0, name is 3-Oxobutanenitrile, molecular formula is C4H5NO, 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: DDQ (341 mg, 1.5 mmol) was added to -cyanoketone (0.5 mmol) in ethyl acetate (2 mL). Theresulting reaction mixture was stirred overnight during which time a yellow solid precipitated.Ethyl acetate (30 mL) was added and the resultant mixture was subsequently washed with coldaqueous 5% NaHCO3 (10 mL×3) and brine. Silica gel (0.5 g) was added and the mixture rotaryevaporated. The resulting powder was added to the top of a short silica-gel column and purifiedusing petroleum ether/ethyl acetate in a 10:1~7:1 ratio (volume ratio) as the eluent to afford thedesired product.

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; Li, Jiang-Sheng; Xue, Yuan; Li, Zhi-Wei; Liu, Wei-Dong; Lu, Cui-Hong; Zhao, Pei-Xia; Synlett; vol. 24; 15; (2013); p. 2003 – 2005;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Related Products of 218632-01-0,Some common heterocyclic compound, 218632-01-0, name is 3-Fluoro-4-nitrobenzonitrile, molecular formula is C7H3FN2O2, 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.

te^-Butyl 9-(2,6-difluorobenzyl)-2-(5-cyano-2-nitrophenylamino)-8-oxo-8,9- dihydropurine-7-carboxyIate (58). Sodium hydride (88 mg, 95%) was added, under argon flush, to a solution of tert-bntyl 9-(2,6-difluorobenzyl)-2-amino-8-oxo-8,9- dihydropurine-7-carboxylate (57) (191 mg) and 3-fluoro-4-nitrobenzonitrile (415 mg) in DMF (5 mL) at -40 C. The reaction mixture was allowed to warm to -20 0C over 3 hr then quenched by the addition of sat. aq. NH4Cl, once at RT the mixture was diluted with EtOAc and separated. The organics were washed with brine (3 x), dried, filtered and evaporated, purified via column chromatography, (eluted with DCM and 1 and 2.5 % MeOH/DCM) to yield tert-Butyl 9-(2,6-difluorobenzyl)-2-(5-cyano-2- nitrophenylamino)-8-oxo-8,9-dihydropurine-7-carboxylate (58) (288 mg), MH+ = 524.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3-Fluoro-4-nitrobenzonitrile, its application will become more common.

Reference:
Patent; PHARMACOPEIA DRUG DISCOVERY, INC.; WO2006/108103; (2006); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Some common heterocyclic compound, 1080-74-6, name is 2-(3-Oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile, molecular formula is C12H6N2O, 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-(3-Oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile

To a three-necked round bottom flask were added 5,5′-(9,9′-spirobi[fluorene]-20,7-diyl)bis(4-(2-ethylhexyl)thiophene-2-carbaldehyde) (205 mg, 0.27 mmol), 1,1-dicyanomethylene-3-indanone (430 mg, 2.2 mmol), chloroform (50 mL), and 0.9 mLpyridine. The mixture was deoxygenated with nitrogen for 30 minand then refluxed for 12 h. After cooling down to room temperature,the mixture was poured into methanol (200 mL) and filtered.The residue was purified by column chromatography on silica gelusing petroleum ether/dichloromethane (1:1) as eluent yield anorange solid (207 mg, 69%). 1H NMR (400 MHz, CDCl3): delta 8.77 (s,2H), 8.68 (d, J 6.9 Hz, 2H), 7.96 (s, 1H), 7.93 (d, J 2.7 Hz, 2H), 7.89(d, J 4.8 Hz, 2H), 7.86 (d, J 1.8 Hz, 1H), 7.76 (m, 4H), 7.61 (d,J 5.4 Hz, 4H), 7.45 (t, J 7.5 Hz, 2H), 7.21 (t, J 7.5 Hz, 2H), 6.92 (s,2H), 6.82 (d, J 7.5 Hz, 2H), 2.39 (d, J 6.9 Hz, 4H),1.42 (m, 2H),1.09(m, 16H), 0.75 (m, 6H), 0.59 (t, J 6.9 Hz, 6H). 13C NMR (100 MHz,CDCl3): delta 188.63, 161.13, 157.22, 149.46, 149.27, 148.30, 143.36,141.49, 141.22, 140.47, 138.67, 137.35, 135.67, 135.47, 135.10, 133.58,130.17, 129.32, 128.84, 125.88, 125.17, 124.72, 124.37, 123.20, 121.23,121.15, 115.08, 114.99, 70.28, 66.57, 40.64, 32.95, 32.60, 28.90, 25.88,23.49, 14.65, 10.92. MS (MALDI): m/z calcd for C75H60N4O2S2 H:1114.4; found: 1114.1. Anal. Calcd for C75H60N4O2S2: C, 80.90; H,5.43; N, 5.03. Found: C, 80.77; H, 5.58; N, 5.33.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1080-74-6, its application will become more common.

Reference:
Article; Wang, Jiayu; Dai, Shuixing; Yao, Yuehan; Cheng, Pei; Lin, Yuze; Zhan, Xiaowei; Dyes and Pigments; vol. 123; (2015); p. 16 – 25;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Electric Literature of 64248-64-2, The chemical industry reduces the impact on the environment during synthesis 64248-64-2, name is 2,5-Difluorobenzonitrile, I believe this compound will play a more active role in future production and life.

Step A: 5-Fluoro-2-hydroxybenzonitrile (23t): 2,5-Difluorobenzonitrile (14.9 g, 107 mmol) and benzyl alcohol (11.1 mL, 11.6 g, 107 mmol) were dissolved in DMF (330 mL) and cooled to 0 C. Sodium hydride (60% in oil, 6.40 g, 161 mmol) was added to the solution at 0 C. and the reaction mixture was allowed to warm to room temperature. After stirring for 1 hour at room temperature, the reaction solution was cooled to 0 C. and water (330 mL) was gradually added to the solution. The mixture was transferred to a separatory funnel and extracted 3 times with 500 mL of Et2O. The combined organic layer was washed with 100 mL of water twice, brine once, then dried over MgSO4. After filtration, the solution was concentrated under reduced pressure to obtain a crude pale yellow solid. The crude solid was dissolved in MeOH (500 mL). To the solution was added 10% palladium on activated carbon under a nitrogen atmosphere. Replacing nitrogen gas with hydrogen gas, reaction mixture was stirred at room temperature (if the reaction did not proceed in 30 minutes, the palladium on carbon was filtered off and set up again). After 2 hours of stirring, the palladium on carbon was filtrated off and washed with MeOH. The solution was concentrated under reduced pressure to obtain a pale yellow solid. The solid was recrystallized from hot toluene (100 mL) by addition of hexane (10 mL) followed by cooling to 0 C. The obtained white needles were washed with 1:1 mixture of toluene and hexane (7.23 g, 49% yield). The mother liquor was concentrated and purified on silica gel with Et2O/hexane (2:3-1:1) to afford desired compound (23t) (6.94 g, 47% yield). Total 14.2 g (96% yield) over 2 steps. 1H-NMR (400 MHz, d6-DMSO) delta 11.09 (s, 1H), 7.58 (dd, J=8.4, 3.2 Hz, 1H), 7.40 (td, J=8.6, 3.2 Hz, 1H), 7.03 (dd, J=9.2, 4.4 Hz, 1H) ppm.

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

Reference:
Patent; Munson, Mark; Kim, Youngboo; Groneberg, Robert D.; Rizzi, James; Rodriguez, Martha; Kim, Ganghyeok; Vigers, Guy; Rao, Chang; Balachari, Devan; US2004/180896; (2004); A1;; ; Patent; Munson, Mark; Mareska, David A.; Kim, Youngboo; Groneberg, Robert D.; Rizzi, James; Rodriguez, Martha; Kim, Ganghyeok; Vigers, Guy; Rao, Chang; Balachari, Devan; Harvey, Darren; US2004/192653; (2004); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts