Category: 40473-07-2

Synthetic Route of 40473-07-2 , The common heterocyclic compound, 40473-07-2, name is 2-Bromo-6-methoxypyridine, molecular formula is C6H6BrNO, 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.

Preparation 21 : 2-methoxy-6-(4,4,5,5-tetramethyl-[1 ,3,2]dioxaborolan-2-yl)- nicotinamide; Step 1 : theta-bromo^-methoxy-nicotinic acid; A solution of 2,2,6,6-tetramethylpiperidine (0.766 g, 5.32 mmol) in tetrahydrofuran (5 mL) was cooled to -78C under nitrogen. 2.5M n-butyllithium in hexanes (2.34 ml_, 0.375 g, 5.85 mmol) and the mixture was stirred at -780C for 30 min. To the reaction mixture was added a solution of 2-bromo-6-methoxypridine (1.00 g, 5.32mmol) in tetrahydrofuran (5 mL) dropwise. The reaction was stirred at -78C for 1 h. After this time, an excess of dry ice was added to the reaction mixture and the reaction was allowed to warm to room temperature for 3 h. To the mixture was added water and ethyl acetate, the layers were separated. The aqueous layer was acidified to pH 4. The aqueous layer was extracted 3 times with ethyl acetate. The combined organic layers were washed with brine, dried over magnesium sulfate, filtered, and concentrated to an off-white solid (0.530 g, 42.9 %) 1 H NMR (500 MHz, DMSO-d6) delta ppm 2.52 (2 H, br. s.), 3.32 (1 H, br. s.), 3.92 (1 H, m), 3.90 (1 H, d, J=2.9 Hz), 8.03 (1 H, d, J=7.8 Hz).

The synthetic route of 40473-07-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PFIZER INC.; ARHANCET, Graciela Barbieri; CASIMIRO-GARCIA, Agustin; CHEN, Xiangyang; HEPWORTH, David; MEYERS, Marvin Jay; PIOTROWSKI, David Walter; RAHEJA, Raj Kumar; WO2010/116282; (2010); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 40473-07-2, name is 2-Bromo-6-methoxypyridine. This compound has unique chemical properties. The synthetic route is as follows. Computed Properties of C6H6BrNO

To a solution of the compound of Preparation 113 (5.6 g, 29.8 mmol) in anhydrous tetrahydrofuran (100 ml), at -78° C. and under nitrogen, was added n-butyllithium (1.6M in hexane, 19.5 ml), via syringe. The mixture was stirred at -78° C. for 30 min, before addition of N,N-dimethylformamide (2.5 ml, 32.8 mmol). The reaction mixture was allowed to warm to room temperature and stirred for 18 h, before being acidified with sulphuric acid (2M) and then neutralised by addition of sodium hydrogen carbonate. The mixture was concentrated in vacuo and the residue was extracted with ethyl acetate (4*150 ml). The combined extracts were dried (MgSO4) and concentrated in vacuo to give the title compound (3.0 g). 1H-NMR (CDCl3): 4.01-4.05 (3H), 6.95-7.00 (1H), 7.54-7.58 (1H), 7.70-7.76 (1H), 9.95-9.98 (1H)

With the rapid development of chemical substances, we look forward to future research findings about 40473-07-2.

Reference:
Patent; PFIZER LIMITED; US2008/103130; (2008); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 40473-07-2 ,Some common heterocyclic compound, 40473-07-2, molecular formula is C6H6BrNO, 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 stirred solution of 2-bromo-6-methoxypyridine (10 g, 0.053 mol) in dry ACN (100 ml_), was added A/-bromosuccinimide (18.82 g, 0.106 mol) at RT. The reaction mixture was stirred at 90? for 16 h. The completion of reaction was monitored by TLC. After completion, the reaction was filtered through a celite bed, diluted with water (30 mL) and exacted with 10% EtOAc in petroleum ether (2 x 100 mL). The combined organic layer washed with water (10 mL), brine (10mL) dried over Na2SC>4 and concentrated. The resulting crude material was purified by crystallization (5 mL DCM in 50 mL n- pentane). The solid was filtered, washed with n-pentane and then dried unber vacuum to get afford the tittle compound. Yield: 35% (4.92 g, off white solid). 1H NMR (400 MHz, CDCI3): d 7.70 (d, J = 8.4 Hz, 1 H), 6.62 (d, J = 8.4 Hz, 1 H), 3.93 (s, 3H), LCMS: (Method A) 367.9 (M+H), Rt. 2.4 min, 96.7% (Max).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,40473-07-2, its application will become more common.

Reference:
Patent; ASCENEURON S. A.; QUATTROPANI, Anna; WISHART, Grant; KULKARNI, Santosh S.; GIRI, Awadut Gajendra; RAKESH, Paul; (250 pag.)WO2020/39028; (2020); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 40473-07-2, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 40473-07-2, name is 2-Bromo-6-methoxypyridine, molecular formula is C6H6BrNO, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

Example 260 2,3-dibromo-6-methoxypyridine NBS (302 g) was added to the compound of Example 259 (295 g) in acetonitrile (575 mL) and the mixture was stirred at 80 to 90 C. for 1 day in a nitrogen atmosphere. After cooling, the crystallized imide was removed by filtration and the filtrate was concentrated. Purification of the resulting residue by silica gel column chromatography (ether:petroleum ether=1:1) gave a 6:1 mixture of the title compound and 2,5-dibromo form. This product was crystallized from cold petroleum ether to afford the title compound as a colorless powder (223 g). 1H NMR (200 MHz, CDCl3) delta 6.68 (1H, d, J=8.7 Hz), 6.60 (1H, d, J=8.7 Hz), 3.91 (3H, s). 13C NMR (50 MHz, CDCl3) delta 162.01, 143.29, 139.68, 113.69, 111.10, 54.40 LRMS (EI+): 264[M+]

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 40473-07-2, 2-Bromo-6-methoxypyridine.

Reference:
Patent; Kohno, Yasushi; Adams, David Roger; Ando, Naoki; US2008/207902; (2008); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 40473-07-2 ,Some common heterocyclic compound, 40473-07-2, molecular formula is C6H6BrNO, 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: The aryl halide was dissolved in 5mL of methanol per mmol of (hetero)arylhalide, magnesium (5 equiv.) added and the mixture was stirred at room temperature. After completion of the reaction (between 6-12h), the reaction mixture was poured into water, acidified with dilute HCl, and extracted with ethyl acetate. The organic phase was dried over MgSO4 and concentrated under reduced pressure. The product was purified if necessary by column chromatography on silica gel.

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. 40473-07-2, 2-Bromo-6-methoxypyridine, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Jouha, Jabrane; Khouili, Mostafa; Hiebel, Marie-Aude; Guillaumet, Gerald; Suzenet, Franck; Tetrahedron Letters; vol. 59; 32; (2018); p. 3108 – 3111;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem