Category: 121507-34-4

Electric Literature of 121507-34-4, The chemical industry reduces the impact on the environment during synthesis 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, I believe this compound will play a more active role in future production and life.

(Step 2) Production of 5-isopropoxy-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazole-3-amine With cooling with ice, sodium hydride (1.44 g) was added to a DMF (100 mL) solution of the compound (4.84 g) obtained in the step 1, and stirred for 2 hours with cooling with ice. The reaction liquid was cooled to -18 C., and 2-(trimethylsilyl)ethoxymethyl chloride (6.38 mL) was dropwise added thereto. After stirred at -18 C. for 2 hours, this was heated up to room temperature, and further stirred for 1 hour. Aqueous saturated ammonium chloride solution was added to the reaction liquid, then extracted with ethyl acetate, and dried with sodium sulfate. The drying agent was removed through filtration, and the solvent was evaporated off under reduced pressure. The residue was purified through silica gel column chromatography (ethyl acetate/hexane=from 0% to 40%, gradient, and then methanol/chloroform=from 0% to 20%, gradient) to give the entitled compound (2.28 g, 25%).

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-Isopropoxy-1H-pyrazol-3-amine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Jitsuoka, Makoto; Nagase, Tsuyoshi; Sato, Nagaaki; Tsukahara, Daisuke; US2011/9622; (2011); 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. 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. Formula: C6H11N3O

To a mixture of 2,3,6-trichloro-5-nitropyridine (2.61 g, 11.4 mmol) and DIEA (1.90 ml, 11.4 mmol) in THF (50 ml) was added 5-isopropoxy-l/J-pyrazol-3-amine (1.20 g, 8.50 mmol) at 0 0C. After addition, the reaction mixture was stirred at 25 C for 5 days. The solvent was removed under reduced pressure and the resulted residue was purified by column chromatography (hexane-EtOAc = 1 : 1) to give the title compound as a yellow solid (0.51 g, 18%). 1H NMR (400 MHz) delta 12.22 & 11.35 (s, IH), 10.12 & 9.80 (s, IH), 8.64 & 8.54 (s, IH), 5.95 & 5.84 (s, IH), 4.70 & 4.46 (m, IH), 1.27-1.32 (m, 6H). MS: Calcd.: 331; Found: [M+H]+ 332.

The synthetic route of 121507-34-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2006/87538; (2006); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Related Products of 121507-34-4, The chemical industry reduces the impact on the environment during synthesis 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, I believe this compound will play a more active role in future production and life.

(Step 2) Production of 5-isopropoxy-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazole-3-amine With cooling with ice, sodium hydride (1.44 g) was added to a DMF (100 mL) solution of the compound (4.84 g) obtained in the step 1, and stirred for 2 hours with cooling with ice. The reaction liquid was cooled to -18 C., and 2-(trimethylsilyl)ethoxymethyl chloride (6.38 mL) was dropwise added thereto. After stirred at -18 C. for 2 hours, this was heated up to room temperature, and further stirred for 1 hour. Aqueous saturated ammonium chloride solution was added to the reaction liquid, then extracted with ethyl acetate, and dried with sodium sulfate. The drying agent was removed through filtration, and the solvent was evaporated off under reduced pressure. The residue was purified through silica gel column chromatography (ethyl acetate/hexane=from 0% to 40%, gradient, and then methanol/chloroform=from 0% to 20%, gradient) to give the entitled compound (2.28 g, 25%).

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-Isopropoxy-1H-pyrazol-3-amine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Jitsuoka, Makoto; Nagase, Tsuyoshi; Sato, Nagaaki; Tsukahara, Daisuke; US2011/9622; (2011); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, belongs to pyrazoles-derivatives 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 121507-34-4, Safety of 5-Isopropoxy-1H-pyrazol-3-amine

Method 2; 2,5-Dichloro-N-(5-isopropoxy-lH-pyrazol-3-yl)pyrimidin-4-amine; A solution of 2,4,5-trichloropyrimidine (533 mg, 2.93 mmol), 5-isopropoxy-lH- pyrazol-3 -amine (413 mg, 2.93 mmol) and triethylamine (0.49 ml) in TetaF (5 ml) was stirred at room temperature for 10 hours. Solvent was removed and EtOAc was added. The solution was washed with water and dried over anhydrous sodium sulfate and was concentrated to give title compound as a white solid (582 mg, 69%). LC-MS, 246 (M-42); 1H nuMR (CDCl3) delta 8.19 (s, IH), 7.80 (s, IH)5 5.79 (s, IH), 4.65 (m, IH), 1.30 (d, 6H).

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; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2007/49041; (2007); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

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. 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, This compound has unique chemical properties. The synthetic route is as follows., Formula: C6H11N3O

Intermediate 76-Chloro-N-(5-isopropoxy-lH-pyrazol-3-yl)-3-nitropyridin-2-amine; A mixture of 2,6-dichloro-3-nitropyridine (0.5 g) and 5-isopropoxy-lH-pyrazo 1-3 -amine (Intermediate 6, 0.35 g) in acetonitrile (10 mL) with triethylamine (2 mL) was stirred at room temperature for 24 hours, The resulting mixture was concentrated, and the resulting residue was separated by silica gel column (etaexane/Ethyl acetate) to afford 0.45 g desired product. MS (electrospray): 298 (M+l) for CHHI2CIN5O3.

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 121507-34-4.

Reference:
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2008/135785; (2008); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

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. 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, A new synthetic method of this compound is introduced below., SDS of cas: 121507-34-4

2-Chloro-5-fluoro-6-(‘5-isopropoxy-li:/-pyrazol-3-ylamino)nicotinonitrile A solution of 5-isopropoxy-17f-pyrazol-3-amine (0.96g, 6.8 mmol), 2,6-dichloro-5- fluoronicotinonitrile (1.3g, 6.8 mmol), and triethylamine (0.9g, 8.8 mmol) in THF (30 ml) was heated to 60 C for 4 days, and then cooled to 25 C, at which point the product precipitated. The resulting solid was filtered and washed with hexanes (100 ml) to give the title compound (LOg, 50%). MS: Calcd.: 295; Found: [M+H]+ 296.

The synthetic route of 121507-34-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2006/82392; (2006); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, belongs to pyrazoles-derivatives 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 121507-34-4, COA of Formula: C6H11N3O

6-chloro-N’-(5-isopropoxy-1H-pyrazol-3-yl)-N-[(3-methylisoxazol-5-yl)methyl]pyrimidine-2,4-diamine (also known as 6-chloro-N-[(3-methyl-1,2-oxazol-5-yl)methyl]-N’-(5-propan-2-yloxy-1H-pyrazol-3-yl)pyrimidine-2,4-diamine), used as starting material, was prepared as follows: a) A solution of 2,4,6-trichloropyrimidine (1.3 g, 7.08 mmol) and sodium carbonate (0.751 g, 7.08 mmol) in ethanol (20 ml) was cooled to 0 C. and then 5-isopropoxy-1H-pyrazol-3-amine (1.0 g, 7.08 mmol) was added. The mixture was stirred at room temperature overnight and then evaporated. The residue was taken up in ethyl acetate (50 ml) and washed with water (50 ml) and then with brine (25 ml). The organic extracts were dried over magnesium sulfate, filtered and then evaporated to leave a yellow oil. The oil was purified by chromatography on silica eluting with a mixture of 25-60% ethyl acetate in iso-hexane. The fractions containing product were combined and evaporated to leave a solid that was triturated with diethyl ether to give 2,6-dichloro-N-(5-isopropoxy-1H-pyrazol-3-yl)pyrimidin-4-amine (1.06 g, 52% yield). 1HNMR(400 MHz, DMSO 373K): 1.31 (d, 6H), 4.5 (bs, 1H), 5.62 (s, 1H), 7.19 (bs, 1H), 10.16 (bs, 1H), 11.72 (bs, 1H).MS: m/z 288 (MH+).

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-Isopropoxy-1H-pyrazol-3-amine, other downstream synthetic routes, hurry up and to see.

Related Products of 121507-34-4, A common heterocyclic compound, 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, molecular formula is C6H11N3O, 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.

To a mixture of 2,3,6-tf chloro-5-nitropyridine (2.61 g, 11.4 mmol) and DIEA (1.90 ml, 11.4 mmol) in TEtaF (50 ml) was added the 5-isopropoxy-lH-pyrazol-3-amine (1.20 g, 8.50 mmol) at 0 0C. After addition, the reaction mixture was stirred at 25 0C for 5 days. The solvent was removed under reduced pressure and the resulting residue was purified by column chromatography (hexane-EtOAc = 2.5 : 1) to give the title compound as a yellow solid (0.77 g, 27%). 1H NMR (400 MHz) delta 12.26 & 11.64 (s, IH), 10.42 & 10.04 (s, IH), 8.81 & 8.77 (s, EPO IH), 6.02 & 5.94 (s, IH), 4.70 & 4.48 (m, IH)3 1.32 (d, J= 6.0 Hz, 3H)5 1.27 (d, J= 6.0 Hz, IH). MS: Calcd.: 331; Found: [MH-H]+ 332

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.

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. 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, A new synthetic method of this compound is introduced below., name: 5-Isopropoxy-1H-pyrazol-3-amine

Example 68; N’-(5-isopropoxy-1H-pyrazol-3-yl)-6-methyl-N-[(3-methylisoxazol-5-yl)methyl]pyrimidine-2,4-diamine (also known as 6-methyl-N-[(3-methyl-1,2-oxazol-5-yl)methyl]-N’-(5-propan-2-yloxy-1H-pyrazol-3-yl)pyrimidine-2,4-diamine)A mixture of 4-chloro-6-methyl-N-[(3-methylisoxazol-5-yl)methyl]pyrimidin-2-amine (also known as 4-chloro-6-methyl-N-[(3-methyl-1,2-oxazol-5-yl)methyl]pyrimidin-2-amine; 0.20 g, 0.84 mmol) and 5-isopropoxy-1H-pyrazol-3-amine (0.178 g, 1.26 mmol) in anhydrous 1-methylpyrrolidinone (2 mL) and 4M hydrogen chloride solution in dioxane (0.42 mL) was heated at 110 C. for 4 hours. The mixture was left to stand at room temperature overnight and was then diluted with saturated sodium bicarbonate solution and extracted with ethyl acetate (¡Á2). The organic extracts were washed with brine, dried over magnesium sulfate, filtered and then evaporated to leave an orange oil. The oil was purified by chromatography on silica eluting with a mixture of 2-4% methanol in dichloromethane. Fractions containing product were combined and then evaporated to leave a solid which was triturated with diethyl ether to leave example 68 in table 4 (0.039 g, 12% yield).1H NMR (500 MHz, DMSO at 373K): 1.28 (d, 6H), 2.15 (s, 3H), 2.19 (s, 3H), 4.58 (d, 2H), 4.64 (bs, 1H), 5.25 (bs, 1H), 5.41 (bs, 1H), 6.12 (s, 1H), 7.2 (bs, 1H), 9.33 (bs, 1H), 11.39 (bs, 1H).MS: m/z 344 (MH+).

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.

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. 121507-34-4, name is 5-Isopropoxy-1H-pyrazol-3-amine, A new synthetic method of this compound is introduced below., Application In Synthesis of 5-Isopropoxy-1H-pyrazol-3-amine

5-bromo-N’-(5-isopropoxy-1H-pyrazol-3-yl)-N-[(3-methylisoxazol-5-yl)methyl]pyrimidine-2,4-diamine (also known as 5-bromo-N-[(3-methyl-1,2-oxazol-5-yl)methyl]-N’-(5-propan-2-yloxy-1H-pyrazol-3-yl)pyrimidine-2,4-diamine), used as starting material, was prepared as follows: a) To a solution of 5-isopropoxy-1H-pyrazol-3-amine (2.0 g, 14.2 mmol) in dry tetrahydrofuran (60 ml) under a nitrogen atmosphere was added triethylamine and the mixture cooled to 0 C. A solution of 5-bromo-2,4-dichloropyrimidine (3.23 g, 14.2 mmol) in dry tetrahydrofuran (30 ml) was added dropwise and the mixture was allowed to stir at room temperature for 18 hours. The mixture was evaporated and the residue crystallised with ethyl acetate. The mixture was filtered and the residue triturated thoroughly with water. The resultant solid was filtered and then left to dry overnight to give 5-bromo-2-chloro-N-(5-isopropoxy-1H-pyrazol-3-yl)pyrimidin-4-amine (1.645 g, 35% yield). MS: m/z 332 (MH+).

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.