Category: 1824-81-3

Adding a certain compound to certain chemical reactions, such as: 1824-81-3, 2-Amino-6-picoline, 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, HPLC of Formula: C6H8N2, blongs to pyridine-derivatives compound. HPLC of Formula: C6H8N2

(1) 200 mL of acetic anhydride was added to 39.9 g of 2-amino-6-methylpyridine at room temperature, and the mixture was stirred at 70C for 2 hours. The obtained reaction solution was concentrated, neutralized with an aqueous solution of sodium hydrogen carbonate, and extracted with ethyl acetate. The organic phase was washed with saturated brine. Subsequently, the organic phase was dried over anhydrous sodium sulfate and filtered, and the filtrate was concentrated to obtain 60.6 g of an acetamide product [149-1] as follows. [Show Image] The spectral data of the compound represented by the above Formula [149-1] is presented below. 1H-NMR (CDCl3) delta: 8.10 (1H, brs), 7.97 (1H, d, J=8.0 Hz), 7.57 (1H, t, J=8.0 Hz), 6.88 (1H, d, J=8.0 Hz), 2.43 (3H, s), 2.17 (3H, s). mass: 151 (M+1)+

At the same time, in my other blogs, there are other synthetic methods of this type of compound,1824-81-3, 2-Amino-6-picoline, and friends who are interested can also refer to it.

Reference:
Patent; BANYU PHARMACEUTICAL CO., LTD.; EP1754706; (2007); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 1824-81-3, name is 2-Amino-6-picoline. This compound has unique chemical properties. The synthetic route is as follows. category: pyridine-derivatives

General procedure: To a stirred mixture of alcohol/phenol/thiohenol/amine (1 mmol) and acetic anhydride(1.1 mmol), 0.01 mmol of MnCl24H2O was added at room temperature. The reaction mixture was stirred until alcohol/phenol/thiohenol/amine was consumed, the progress of the reaction was monitored by TLC. The reaction mixture was quenched with saturated aq. NaHCO3 and extracted with ethyl acetate (10mL 3). The organic layer was dried over anhydrous Na2SO4 and concentrated under reduced pressure. The crude was passed through a small pad of silica gel (eluent: hexane: ethyl acetate) to obtain pure acetates (acetamides were precipitated out/crystallized direct from the reaction mixture) and characterized by 1H NMR and IR spectroscopy. The data was found to be in accord with previously reported acetates. Characterization data and 1H NMR spectra can be found via the ?SupplementaryContent? section of this article?s webpage.

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, 1824-81-3, 2-Amino-6-picoline.

Reference:
Article; Jain, Isha; Sharma, Ramandeep; Malik, Payal; Synthetic Communications; vol. 49; 21; (2019); p. 2952 – 2960;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 1824-81-3, 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 1824-81-3 as follows.

An alkali trap, an equal pressure dropping funnel, a thermometer, and a mechanical stirrer were attached to a 1000 mL four-necked round bottom flask. (A) 2-amino-6-picoline (27.0 g 0.25 mol) and 48% HBr (125 mL 2.31 mol) were placed in this reaction vessel. The reaction vessel was immersed in an ice bath and cooled to 0 C. Br2 (37.5 mL 0.72 mol) was transferred to an equal pressure dropping funnel, The temperature of the reaction solution was kept at 0 C. and slowly dropped into the reaction vessel over 90 minutes while vigorously stirring with a mechanical stirrer. NaNO 2 (42.5 g 0.62 mol) was weighed and dissolved in about 100 mL of distilled water. This was transferred to an equal pressure dropping funnel,While stirring vigorously with a stirrer, it dripped over about 2 hours. At this time, care was taken that the temperature of the reaction solution did not exceed 10 C. In order to complete the reaction, NaNO 2 (2.50 g 0.036 mol) was dissolved in about 10 mL of distilled water and added, It was confirmed that nitrogen gas was not generated from the reaction vessel. While cooling in an ice bath, NaOH (95.0 g, 2.4 mol) was dissolved in about 300 mL of distilled water, after cooling sufficiently, it was gradually added to the solution for neutralization. At this time, care was taken that the temperature of the reaction solution did not exceed 20 C. The reaction mixture was extracted with Et 2 O (200 mL × 4) and the organic layer was collected. Anhydrous Na 2 SO 4 was added and dried, Upon concentration, a brown oily substance was obtained. This oily substance was distilled under reduced pressure in a rectifying tube, fractionated at 55 C. to 60 C. at a reduced pressure degree of 7.00 mmHg, A yellow oily substance was obtained. This material was stored at -40 C. Yield: 72% (32.0 g)

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1824-81-3, its application will become more common.

Reference:
Patent; THE DOSHISHA; KODERA, MASAHITO; TSUJI, TOMOKAZU; (18 pag.)JP2017/197451; (2017); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.1824-81-3, name is 2-Amino-6-picoline, molecular formula is C6H8N2, molecular weight is 108.14, as common compound, the synthetic route is as follows.Recommanded Product: 1824-81-3

EXAMPLE 55 2-[(imidazo[1,2-a]pyridin-5-ylmethyl)thio]-1H-benzimidazole STR64 To a cold (ca. 0) solution of 86.4 g (0.88 mole) of 2-amino-6-methylpyridine and 101 g (0.96 mole) of triethylamine in 1.0 liter of dichloromethane was added dropwise a solution of 106.1 g (0.88 mole) of trimethylacetyl chloride in 100 ml of dichloromethane. After stirring an hour after addition was completed, the mixture was poured into water and the layers separated. The aqueous layer was extracted with dichloromethane. The organic layers were combined and washed with water, dried over magnesium sulfate, filtered, and concentrated in vacuo to an oil that crystallized upon standing. The solid was triturated with hexane and collected by filtration, giving 115 g of 2-(trimethylacetamido)-6-methylpyridine.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,1824-81-3, 2-Amino-6-picoline, and friends who are interested can also refer to it.

Reference:
Patent; G. D. Searle & Co.; US4687775; (1987); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 1824-81-3, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.1824-81-3, name is 2-Amino-6-picoline, molecular formula is C6H8N2, molecular weight is 108.14, as common compound, the synthetic route is as follows.

To a mixture of 2-amino-6-methylpyridine 10a (500 mg, 4.6 mmol), and triethylamine (778 muL, 5.98 mmol) in dichloromethane (50 mL) was added pivaloyal chloride (628 muL, 5.1 mmol). The mixture was allowed to stir at room temperature for three hours. The mixture was washed with saturated sodium bicarbonate followed by brine. The organic extract was dried over magnesium sulfate and concentrated to give Compound 10b (876 mg) as a crude oil, which solidified upon standing.

Statistics shows that 1824-81-3 is playing an increasingly important role. we look forward to future research findings about 2-Amino-6-picoline.

Reference:
Patent; Flores, Christopher M.; Wade, Paul R.; US2011/319400; (2011); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 1824-81-3, 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. 1824-81-3, name is 2-Amino-6-picoline. A new synthetic method of this compound is introduced below.

2. Dissolve 10.80 g of 2-amino-6-methylpyridine (Compound 9) in 500 mL of acetonitrile, add 33.7 g of N-iodosuccinimide, and react at room temperature for 3 h. The precipitate was filtered, washed with 200 mL of cold acetonitrile, and dried under vacuum to obtain 12.2 g (compound 10) as an off-white solid with a yield of about 52%.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,1824-81-3, 2-Amino-6-picoline, and friends who are interested can also refer to it.

Reference:
Patent; China Agricultural University; Wang Zhanhui; Shen Jianzhong; Wen Kai; Li Chenglong; Yu Xuezhi; Zhang Suxia; Shi Weimin; Yu Wenbo; (19 pag.)CN110713457; (2020); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 1824-81-3 ,Some common heterocyclic compound, 1824-81-3, molecular formula is C6H8N2, 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-amino-6-methylpyridine 10a (500 mg, 4.6 mmol), and triethylamine (778 muL, 5.98 mmol) in dichloromethane (50 ml_) was added pivaloyal chloride (628 muL, 5.1 mmol). The mixture was allowed to stir at room temperature for three hours. The mixture was washed with saturated sodium bicarbonate followed by brine. The organic extract was dried over magnesium sulfate and concentrated to give Compound 10b (876 mg) as a crude oil, which solidified upon standing.

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. 1824-81-3, 2-Amino-6-picoline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; JANSSEN PHARMACEUTICA N.V.; WO2007/79214; (2007); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 1824-81-3, name is 2-Amino-6-picoline. This compound has unique chemical properties. The synthetic route is as follows. Safety of 2-Amino-6-picoline

Preparation Example 1(compound 5 and compound 13):; [Show Image] Step A Commercially available 2 amino-6-picoline (10.8 g, 100 mmol) was treated with a solution of di-tert-butyl dicarbonate (26.2 g. 120 mmol) in dichloromethane (100 mL). The solvent was removed in vacuo and the residue was heated at ?70 C in a sand bath overnight. The mixture was diluted with ethyl acetate (150 mL) and the organic phase washed with 10 % citric acid solution (70 mL), saturated sodium bicarbonate (70 mL) and brine (70 mL). The organic phase was separated, dried over Na2SO4, filtered and the solvents were removed. The residue was purified by chromatography on silica using ethyl acetate/petrolether (10/90) to elute excess reagent, followed by ethylacetate/petrolether (20/80) to afford the desired compound as a colorless oil, which becomes a white solid by standing at room temperature (19 g, 91 %). 1H-NMR (400 MHz, CDCl3): d = 1.53 (s, 9H), 2.44 (s, 3H), 6.82 (d, 1H), 7.27 (br-s, 1H), 7.55 (t, 1H), 7.72 (d, 1H)

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, 1824-81-3, 2-Amino-6-picoline.

Reference:
Patent; AC Immune S.A.; EP2311823; (2011); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.1824-81-3, name is 2-Amino-6-picoline, molecular formula is C6H8N2, molecular weight is 108.14, as common compound, the synthetic route is as follows.HPLC of Formula: C6H8N2

Step 1 Synthesis of 2,2-dimethyl-N-(6-methyl-2-pyridinyl)propaneamide (21-1) 2-amino-6-picoline (26 g) was dissolved in dichloromethane (280 ml) and the reactor was cooled to 0 C., followed by adding triethylamine (30. g) thereto. To the obtained solution was slowly added dropwise a solution of trimethylacetylchloride (31.8 g) in dichloromethane (20 ml) and the mixture was stirred at room temperature for 3 hours. The resulting mixture was filtered, washed with water, dried over anhydrous magnesium sulfate, concentrated under reduced pressure and then crystallized (dichloromethane/petroleum ether) to yield a pale yellow solid (38 g, 82%).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,1824-81-3, 2-Amino-6-picoline, and friends who are interested can also refer to it.

Reference:
Patent; Suh, Young Ger; Oh, Uh Taek; Kim, Hee Doo; Lee, Jee Woo; Park, Hyeung Geun; Park, Ok Hui; Lee, Yong Sil; Park, Young Ho; Joo, Yung Hyup; Choi, Jin Kyu; Lim, Kyung Min; Kim, Sun Young; Kim, Jin Kwan; Koh, Hyun Ju; Moh, Joo Hyun; Jeong, Yeon Su; Yi, Jung Bum; Oh, Young Im; US2003/153596; (2003); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 1824-81-3, name is 2-Amino-6-picoline. A new synthetic method of this compound is introduced below., HPLC of Formula: C6H8N2

21.6 g of 2-amino-6-methylpyridine and 24 g of triethylamine were added to 200 ml of chloroform, and 26 g of pivaloyl chloride was added dropwise at 0C to the mixture. The obtained mixture was stirred at a room temperature for 1 day. Thereafter, a sodium bicarbonate aqueous solution was added to the reaction mixture, and it was then extracted with chloroform twice. The organic layer was dried over magnesium sulfate, and it was then concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography, so as to obtain 36.8 g of N-(6-methylpyridin-2-yl)-2,2-dimethylpropionic acid amide.N-(6-methylpyridin-2-yl)-2,2-dimethylpropionic acid amide [Show Image] 1H-NMR (CDCl3) delta: 1.33 (9H, s), 2.45 (3H, s), 6.88 (1H, d, J = 7.7 Hz), 7.58 (1H, dd, J = 8.1, 7.7 Hz), 7.94 (1H, br s), 8.05 (1H, d, J = 8.1 Hz).

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, 1824-81-3, 2-Amino-6-picoline.

Reference:
Patent; Sumitomo Chemical Company, Limited; EP2248423; (2010); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem