Category: 25699-83-6

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. 25699-83-6, name is 4-(1H-Pyrazol-1-yl)benzonitrile belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 4-(1H-Pyrazol-1-yl)benzonitrile

A 250-mL round-bottom flask was charged with 4-(1H-pyrazol-1-yl)benzonitrile (Step 1, 2 g, 11.82 mmol), ethanol (40 mL), water (40 mL) and sodium hydroxide (705 mg, 17.63 mmol,). The resulting solution was stirred at 105 C. 16 h and then concentrated under vacuum. The residue was diluted with water (30 mL) and extracted with ethyl acetate (50 mL). The pH of the aqueous phase was adjusted to 5 with hydrochloric acid (6.0 M). The solids were collected by filtration, washed with water (10 mL) and dried in an oven to afford 4-(1H-pyrazol-1-yl)benzoic acid as a light yellow solid (Intermediate 2-13, 1 g, 45%). LCMS: (ESI) m/z 189 [M+H].

The synthetic route of 25699-83-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Forma Therapeutics, Inc.; Ioannidis, Stephanos; Talbot, Adam Charles; Follows, Bruce; Buckmelter, Alexandre Joseph; Wang, Minghua; Campbell, Ann-Marie; (61 pag.)US2016/185786; (2016); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Synthetic Route of 25699-83-6, The chemical industry reduces the impact on the environment during synthesis 25699-83-6, name is 4-(1H-Pyrazol-1-yl)benzonitrile, I believe this compound will play a more active role in future production and life.

To 4-(pyrazol-1-yl)benzonitrile (see WO 2005/095343A) (1.46 g, 8.63 mmol) was added a solution of 1M borane tetrahydrofuran complex in tetrahydrofuran (93 ml, 93 mmol), followed by heating to reflux for 16 hours. After completion of the reaction, methanol (14 ml) was added to the reaction solution, followed by concentration under reduced pressure. 6N Hydrochloric acid (265 ml) was added to the residue, followed by further heating to reflux for 3 hours. After this solution was concentrated under reduced pressure, a small amount of water was added. The resulting solution was adjusted to pH 11 with a 30% aqueous sodium hydroxide solution under ice cooling, followed by extraction with methylene chloride. The separated organic layer was dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography (eluent; chloroform:methano1:28% aqueous ammonia=90:10:1 (V/V/V)), and fractions containing the desired compound were concentrated under reduced pressure to afford the title compound (1.24 g) as a pale yellow solid. (Yield: 83%) Mass spectrum (CI, m/z): 174 (M++1). 1H-NMR spectrum (CDCl3, ppm): 7.91 (dd, J=2.5, 0.5Hz, 1H), 7.72 (d, J=1.6Hz, 1H), 7.69-7.63 (m, 2H), 7.44-7.37 (m, 2H), 6.46 (dd, J=2.5, 1.6Hz, 1H), 3.91 (s, 2H).

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, 4-(1H-Pyrazol-1-yl)benzonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Ube Industries, Ltd.; EP2264009; (2010); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

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. 25699-83-6, name is 4-(1H-Pyrazol-1-yl)benzonitrile belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. Product Details of 25699-83-6

A 250-mL round-bottom flask was charged with 4-(1H-pyrazol-1-yl)benzonitrile (Step 1, 2 g, 11.82 mmol), ethanol (40 mL), water (40 mL) and sodium hydroxide (705 mg, 17.63 mmol,). The resulting solution was stirred at 105 C. 16 h and then concentrated under vacuum. The residue was diluted with water (30 mL) and extracted with ethyl acetate (50 mL). The pH of the aqueous phase was adjusted to 5 with hydrochloric acid (6.0 M). The solids were collected by filtration, washed with water (10 mL) and dried in an oven to afford 4-(1H-pyrazol-1-yl)benzoic acid as a light yellow solid (Intermediate 2-13, 1 g, 45%). LCMS: (ESI) m/z 189 [M+H].

The synthetic route of 25699-83-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Forma Therapeutics, Inc.; Ioannidis, Stephanos; Talbot, Adam Charles; Follows, Bruce; Buckmelter, Alexandre Joseph; Wang, Minghua; Campbell, Ann-Marie; (61 pag.)US2016/185786; (2016); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

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 25699-83-6 as follows. Product Details of 25699-83-6

Into a 50-mL 3-necked round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed tetrahydrofuran (15 mL). This was followed by dropwise addition of a 4-(1H-pyrazol-1-yl)benzonitrile (250 mg, 1.48 mmol, 1.00 equiv) in tetrahydrofuran (5 mL) with stirring at 0 C. To this was added LiAlH4 (337 mg, 8.87 mmol, 6.00 equiv). The resulting solution was stirred for 3 h at room temperature. The reaction was then quenched by the addition of NaOH (15%, aq). The resulting solution was extracted with 3*50 mL of dichloromethane and the organic layers were combined, dried over anhydrous sodium sulfate, and concentrated under vacuum. The product was obtained as 0.251 mg of a white crude solid.

According to the analysis of related databases, 25699-83-6, the application of this compound in the production field has become more and more popular.

Reference of 25699-83-6, These common heterocyclic compound, 25699-83-6, name is 4-(1H-Pyrazol-1-yl)benzonitrile, 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.

9-(a) 4-(Pyrazol-1-yl)beilzylamine To 4-(pyrazol-1-yl)benzonitrile (see WO 2005/095343A) (1.46 g, 8.63 mmol) was added a solution of 1M borage ¡¤ tetrahydrofuran complex in tetrahydrofuran (93 ml, 93 mmol), followed by heating to reflux for 16 hours. After completion of the reaction, methanol (14 ml) was added to the reaction solution, followed by concentration under reduced pressure. 6N Hydrochloric acid (265 ml) was added to the residue, followed by further heating to reflux for 3 hours. After this solution was concentrated under reduced pressure, a small amount of water was added. The resulting solution was adjusted to pH 11 with a 30% aqueous sodium hydroxide solution under ice cooling, followed by extraction with methylene chloride. The separated organic layer was dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography (eluent; chloroform:methanol:28% aqueous ammonia=90:10:1 (V/V/V)), and fractions containing the desired compound were concentrated under reduced pressure to afford the title compound (1.24 g) as a pale yellow solid. (Yield: 83%) Mass spectrum (CI, m/z): 174 (M++1). 1H-NMR spectrum (CDCl3, deltappm): 7.91 (dd, J=2.5, 0.5Hz, 1H), 7.72 (d, J=1.6Hz, 1H), 7.69-7.63 (m, 2H), 7.44-7.37 (m, 2H), 6.46 (dd, J=2.5, 1.6H, 1H), 3.91 (s, 2H).

The synthetic route of 25699-83-6 has been constantly updated, and we look forward to future research findings.