Category: 96428-50-1

The origin of a common compound about 96428-50-1

At the same time, in my other blogs, there are other synthetic methods of this type of compound,96428-50-1, Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, and friends who are interested can also refer to it.

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.96428-50-1, name is Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, molecular formula is C18H18N2O3, molecular weight is 310.35, as common compound, the synthetic route is as follows.Product Details of 96428-50-1

Example 2A 8-(Benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylic acid 253 ml of 2N aqueous sodium hydroxide solution were added to a solution of 15.7 g (50.59 mmol) of ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate in 253 ml of dioxane, and the mixture was stirred at room temperature for 14 hours. 101 ml of 6N hydrochloric acid were then added to the mixture. The solid formed was filtered off, washed with water and with methyl tert-butyl ether and then dried in a vacuum drying cabinet at 40 C. overnight. This gave 15.49 g (108% of theory) of 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylic acid as a colourless solid. The yield was more than 100% owing to water of crystallization (1H NMR). LC-MS (Method 1): Rt=0.66 min MS (ESpos): m/z=283.0 (M+H)+ 1H NMR (400 MHz, DMSO-d6): delta=2.67 (s, 3H), 3.2-3.8 (very broad water peak), 5.41 (s, 2H), 7.30 (m, 1H), 7.35-7.48 (m, 4H), 7.57 (d, 2H), 9.02 (d, 1H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,96428-50-1, Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, and friends who are interested can also refer to it.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; VAKALOPOULOS, Alexandros; HARTUNG, Ingo; FOLLMANN, Markus; JAUTELAT, Rolf; STRAUB, Alexander; HAssFELD, Jorma; LINDNER, Niels; SCHNEIDER, Dirk; WUNDER, Frank; STASCH, Johannes-Peter; REDLICH, Gorden; LI, Volkhart Min-Jian; BECKER-PELSTER, Eva Maria; KNORR, Andreas; US2014/128386; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The origin of a common compound about 96428-50-1

At the same time, in my other blogs, there are other synthetic methods of this type of compound,96428-50-1, Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, and friends who are interested can also refer to it.

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.96428-50-1, name is Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, molecular formula is C18H18N2O3, molecular weight is 310.35, as common compound, the synthetic route is as follows.Product Details of 96428-50-1

Example 2A 8-(Benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylic acid 253 ml of 2N aqueous sodium hydroxide solution were added to a solution of 15.7 g (50.59 mmol) of ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate in 253 ml of dioxane, and the mixture was stirred at room temperature for 14 hours. 101 ml of 6N hydrochloric acid were then added to the mixture. The solid formed was filtered off, washed with water and with methyl tert-butyl ether and then dried in a vacuum drying cabinet at 40 C. overnight. This gave 15.49 g (108% of theory) of 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylic acid as a colourless solid. The yield was more than 100% owing to water of crystallization (1H NMR). LC-MS (Method 1): Rt=0.66 min MS (ESpos): m/z=283.0 (M+H)+ 1H NMR (400 MHz, DMSO-d6): delta=2.67 (s, 3H), 3.2-3.8 (very broad water peak), 5.41 (s, 2H), 7.30 (m, 1H), 7.35-7.48 (m, 4H), 7.57 (d, 2H), 9.02 (d, 1H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,96428-50-1, Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, and friends who are interested can also refer to it.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; VAKALOPOULOS, Alexandros; HARTUNG, Ingo; FOLLMANN, Markus; JAUTELAT, Rolf; STRAUB, Alexander; HAssFELD, Jorma; LINDNER, Niels; SCHNEIDER, Dirk; WUNDER, Frank; STASCH, Johannes-Peter; REDLICH, Gorden; LI, Volkhart Min-Jian; BECKER-PELSTER, Eva Maria; KNORR, Andreas; US2014/128386; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Analyzing the synthesis route of 96428-50-1

The synthetic route of 96428-50-1 has been constantly updated, and we look forward to future research findings.

Electric Literature of 96428-50-1 , The common heterocyclic compound, 96428-50-1, name is Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, molecular formula is C18H18N2O3, 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.

Example 24A Ethyl 8-hydroxy-2-methylimidazo[1,2-a]pyridine-3-carboxylate 31.45 g (101.3 mmol) of ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate from Example 23A were dissolved in 2 l of ethyl acetate, 3.15 g of 10% Pd/carbon were added and the mixture was stirred at RT and standard hydrogen pressure for 5 h. The mixture was filtered through kieselguhr, the filter cake was washed well with ethyl acetate/methanol and the filtrate was concentrated to dryness. This gave 21.94 g of the target compound (98% of theory, purity 99%). LC-MS (Method 1): Rt=0.61 min MS (ESpos): m/z=221 (M+H)+ 1H-NMR (400 MHz, DMSO-d6): delta=1.36 (t, 3H), 2.60 (s, 3H), 4.36 (q, 2H), 6.78 (d, 1H), 6.98 (t, 1H), 8.73 (d, 1H), 10.60 (br s, 1H).

The synthetic route of 96428-50-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Bayer Pharma Aktiengesellschaft; VAKALOPOULOS, Alexandros; VALOT, Gaelle; LINDNER, Niels; FOLLMANN, Markus; WUNDER, Frank; STASCH, Johannes-Peter; MARQUARDT, Tobias; REDLICH, Gorden; DIETZ, Lisa; Ll, Volkhart Min-Jian; (94 pag.)US2017/57954; (2017); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Extended knowledge of 96428-50-1

At the same time, in my other blogs, there are other synthetic methods of this type of compound,96428-50-1, Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, and friends who are interested can also refer to it.

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.96428-50-1, name is Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, molecular formula is C18H18N2O3, molecular weight is 310.35, as common compound, the synthetic route is as follows.SDS of cas: 96428-50-1

253 ml of 2 N aqueous sodium hydroxide solution were added to a solution of 15.7 g of ethyl 8-(benzyloxy)- 2-methylimidazo[1 ,2-a]pyridine-3-carboxylate (50.59 mmol) from Example 38A in 253 ml of 1 ,4-dioxane, and the mixture was stirred at RT for 14 h. 101 ml of 6 N aqueous hydrochloric acid were then added. The solid formed was filtered off, washed with water and methyl tert-butyl ether and then dried under reduced pressure at 40 C. overnight. This gave 15.49 g (108% of theory) of 8-(benzyloxy)-2- methylimidazo[1 ,2-a]pyridine-3-carboxylic acid.10698] LC-MS (Method 2): R=0.66 mm10699] MS (ESpos): mlz=283.0 (M+H)10700] ?H-NMR (400 MHz, DMSO-d5): oe=2.67 (s, 3H),5.41 (s, 2H), 7.30 (m, 1H), 7.35-7.48 (m, 4H), 7.57 (d, 2H),9.02 (d, 1H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,96428-50-1, Ethyl 8-(benzyloxy)-2-methylimidazo[1,2-a]pyridine-3-carboxylate, and friends who are interested can also refer to it.

Reference:
Patent; Bayer Pharma Aktiengesellschaft; VAKALOPOULOS, Alexandros; GROMOV, Alexey; FOLLMANN, Markus; BROCKSCHNIEDER, Damian; STASCH, Johannes-Peter; MARQUARDT, Tobias; TERSTEEGEN, Adrian; WUNDER, Frank; REDLICH, Gorden; LANG, Dieter; LI, Volkhart Min-Jian; (95 pag.)US2016/347770; (2016); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem