Category: 867034-10-4

Related Products of 867034-10-4 ,Some common heterocyclic compound, 867034-10-4, molecular formula is C10H9ClN2O2, 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 heterogeneous solution of potassium ethoxide (6.56 g, 77.9 mmol) in diethyl ether (55 mL), was slowly added diethyl oxalate (10.6 mL, 77.9 mmol). A slight exotherm resulted. After stirring 5 min, a homogeneous yellow solution resulted, but after 10 min, a heterogeneous yellow slurry was observed. Addition of 2-chloro-4-methyl-3-nitropyridine (13.45 g, 77.9 mmol) as a solid, with a diethyl ether rinse (23 mL), resulted in a dark violet solution with a dark precipitate. The mixture was stirred at room temperature overnight (21 h). The solid precipitate was filtered, rinsed thoroughly with diethyl ether, and air-dried to give potassium (lZ)-1-(2-chloro-3- nitropyri din-4-yl)-3-ethoxy-3-oxoprop-1-en-2-olate (19.8 g, 63.6 mmol, yield 81%) as an orange solid. The crude product was used directly without further purification or identification.Potassium (lZ)-l-(2-chloro-3-nitropyridin-4-yl)-3-ethoxy- 3-oxoprop-1-en-2-olate (19.8 g, 63.6 mmol) was dissolved in acetic acid (908 mL) and the solution was treated with iron powder (14.6 g, 280.9 mmol). The reaction mixture was warmed to 60C and stirred overnight (18.5 h). TLC analysis indicated consumption of the starting material, therefore the reaction mixture was filtered through diatomaceous earth to remove the catalyst. The filtrate was concentrated to dryness. The residue was treated with methylene chloride (ca. 400 mL) and filtered through a plug of silica. Eluting with methylene chloride removed insolubles, and further elution with methylene chloride/ethyl acetate (50: 50) provided ethyl 7- chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate (10.3 g, 45.8 mmol, yield 72%) as a yellow solid after concentration: Rf 0.80 (silica gel, 50:50 hexanes/ethyl acetate) ; mp 152-157C; (at)H NMR (300 MHz, CD30D) 81.43 (3H, t, J = 7.0 Hz), 4.44 (2H, q, J = 7.1 Hz), 7.27 (lH, s), 7.65 (1H, d, J = 5.7 Hz), 7.95 (1H, d, J = 5.4 Hz); ESI MS m/z 224 [C10H9ClN2O2 + H] +; HPLC (Method A) >99% (AUC) , tR = 16. 6 min.Ethyl 7-chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate (0.64 g, 2.85 mmol) was dissolved in tetrahydrofuran (5.7 mL) and methanol (6.8 mL). To the mixture was added 3 N KOH (2.85 mL). After stirring overnight (15.5 h) at room temperature, the reaction mixture was concentrated to dryness. The residue was dissolved in water. This aqueous solution was made acidic (pH 3 using 6 N HCl. The precipitate was collected by filtration. The precipitate was dissolved in methanol and concentrated to dryness to afford 7-chloro-lH-pyrrolo[2,3- c] pyridine-2-carboxylic acid (0.53 g, 2.7 mmol, 94%) as a yellow powder: mp 210-214C; ¹H NMR (300 MHz, CD30D) 87.25 (lH, s), 7.65 (lH, d, J = 5.4 Hz), 7.94 (lH, d, J = 5.4 Hz) ; ESI MS m/z 195 [C8H5ClN2O2 – H]-; HPLC (Method A) >99% (AUC) , tR = 12.2 min.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,867034-10-4, its application will become more common.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; WO2005/97129; (2005); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 867034-10-4 ,Some common heterocyclic compound, 867034-10-4, molecular formula is C10H9ClN2O2, 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 heterogeneous solution of potassium ethoxide (6.56 g, 77.9 mmol) in diethyl ether (55 mL), was slowly added diethyl oxalate (10.6 mL, 77.9 mmol). A slight exotherm resulted. After stirring 5 min, a homogeneous yellow solution resulted, but after 10 min, a heterogeneous yellow slurry was observed. Addition of 2-chloro-4-methyl-3-nitropyridine (13.45 g, 77.9 mmol) as a solid, with a diethyl ether rinse (23 mL), resulted in a dark violet solution with a dark precipitate. The mixture was stirred at room temperature overnight (21 h). The solid precipitate was filtered, rinsed thoroughly with diethyl ether, and air-dried to give potassium (lZ)-1-(2-chloro-3- nitropyri din-4-yl)-3-ethoxy-3-oxoprop-1-en-2-olate (19.8 g, 63.6 mmol, yield 81%) as an orange solid. The crude product was used directly without further purification or identification.Potassium (lZ)-l-(2-chloro-3-nitropyridin-4-yl)-3-ethoxy- 3-oxoprop-1-en-2-olate (19.8 g, 63.6 mmol) was dissolved in acetic acid (908 mL) and the solution was treated with iron powder (14.6 g, 280.9 mmol). The reaction mixture was warmed to 60C and stirred overnight (18.5 h). TLC analysis indicated consumption of the starting material, therefore the reaction mixture was filtered through diatomaceous earth to remove the catalyst. The filtrate was concentrated to dryness. The residue was treated with methylene chloride (ca. 400 mL) and filtered through a plug of silica. Eluting with methylene chloride removed insolubles, and further elution with methylene chloride/ethyl acetate (50: 50) provided ethyl 7- chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate (10.3 g, 45.8 mmol, yield 72%) as a yellow solid after concentration: Rf 0.80 (silica gel, 50:50 hexanes/ethyl acetate) ; mp 152-157C; (at)H NMR (300 MHz, CD30D) 81.43 (3H, t, J = 7.0 Hz), 4.44 (2H, q, J = 7.1 Hz), 7.27 (lH, s), 7.65 (1H, d, J = 5.7 Hz), 7.95 (1H, d, J = 5.4 Hz); ESI MS m/z 224 [C10H9ClN2O2 + H] +; HPLC (Method A) >99% (AUC) , tR = 16. 6 min.Ethyl 7-chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate (0.64 g, 2.85 mmol) was dissolved in tetrahydrofuran (5.7 mL) and methanol (6.8 mL). To the mixture was added 3 N KOH (2.85 mL). After stirring overnight (15.5 h) at room temperature, the reaction mixture was concentrated to dryness. The residue was dissolved in water. This aqueous solution was made acidic (pH 3 using 6 N HCl. The precipitate was collected by filtration. The precipitate was dissolved in methanol and concentrated to dryness to afford 7-chloro-lH-pyrrolo[2,3- c] pyridine-2-carboxylic acid (0.53 g, 2.7 mmol, 94%) as a yellow powder: mp 210-214C; ¹H NMR (300 MHz, CD30D) 87.25 (lH, s), 7.65 (lH, d, J = 5.4 Hz), 7.94 (lH, d, J = 5.4 Hz) ; ESI MS m/z 195 [C8H5ClN2O2 – H]-; HPLC (Method A) >99% (AUC) , tR = 12.2 min.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,867034-10-4, its application will become more common.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; WO2005/97129; (2005); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 867034-10-4, 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 867034-10-4, name is Ethyl 7-chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate. This compound has unique chemical properties. The synthetic route is as follows.

Ethyl 7-chlo ro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate (preparation described in Reference Example 1) (240 mg, 1.07 mmol), phenol (500 mg, 5.35 mmol) and cyclohexylamine (1.1 mL, 10.7 mmol) were combined in a sealed tube and heated at 100C for 6 h. The reaction tube was cooled to room temperature. The reaction mixture was diluted with ethyl acetate (10 mL), washed with 2 N sodium hydroxide (10 mL) and brine (10 mL), dried over magnesium sulfate, and evaporated to provide 538 mg of dark brown viscous oil. The viscous oil was purified by chromatography (Si02; 3: 1 hexanes/ethyl acetate) to give 7- chloro-N-cyclohexyl-1H-pyrrolo[2,3-c]pyridine-2-carboxamide as an off-white powder (218 mg, 0.785 mmol, 74%): ¹H NMR (300 MHz, CD30D) 81.20-1.55 (6H, m), 1.65-2.10 (4H, m), 3.90 (1H, m), 7.21 (lH, s), 7.61 (lH, d, J = 5.4 Hz), 7.93 (lH, d, J = 5.4 Hz) ; ESI MS m/z 278 [C14H16ClN3O + H](at).7-Chloro-N-cyclohexyl-1H-pyrrolo[2,3-c]pyridine-2- carboxamide (230 mg, 0.828 mmol), triethylamine (0.25 mL) and palladium (II) chloride (3 mg, 2 mol%) were combined in N,N- dimethylformamide (5 mL) under an atmosphere of hydrogen. The (at)’l’i£c£i(at)d£”‘”‘£tI%8(at)tlr(at)”(at)(at)(at)lk9″”(at)(at)ti(at)lated at 60C for 3 h. The reaction mixture was cooled to room temperature and the catalyst was removed by filtration through a pad of diatomaceous earth and washed with ethyl acetate. Evaporation of the solvents provided crude product (169 mg, 84%) as an off-white solid. Purification by chromatography (Si02; 0-10% methanol in methylene chloride, 1400 mL) afforded N-cyclohexyl-1H- pyrrolo [2,3-c]pyridine-2-carboxamide (101 mg, 0.414 mmol, 50%) as fine, white needles: mp 298-301C, ¹H NMR (300 MHz, CD30D) 8 1.20-1.55 (6H, m), 1.65-2.10 (4H, m), 3.90 (lH, m), 7.21 (1H, s), 7.15 (1H, s), 7.65 (lH, d, J = 5.7 Hz), ‘8.09 (lH, d, J = 5.7 Hz), 8.77 (lH, s) ; ESI MS m/z 244 [C14H17N3O + H] +; HPLC (Method A) >99% (AUC), tR = 13.2 min.

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 867034-10-4, Ethyl 7-chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; WO2005/97129; (2005); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 867034-10-4, 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 867034-10-4, name is Ethyl 7-chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate. This compound has unique chemical properties. The synthetic route is as follows.

Ethyl 7-chlo ro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate (preparation described in Reference Example 1) (240 mg, 1.07 mmol), phenol (500 mg, 5.35 mmol) and cyclohexylamine (1.1 mL, 10.7 mmol) were combined in a sealed tube and heated at 100C for 6 h. The reaction tube was cooled to room temperature. The reaction mixture was diluted with ethyl acetate (10 mL), washed with 2 N sodium hydroxide (10 mL) and brine (10 mL), dried over magnesium sulfate, and evaporated to provide 538 mg of dark brown viscous oil. The viscous oil was purified by chromatography (Si02; 3: 1 hexanes/ethyl acetate) to give 7- chloro-N-cyclohexyl-1H-pyrrolo[2,3-c]pyridine-2-carboxamide as an off-white powder (218 mg, 0.785 mmol, 74%): ¹H NMR (300 MHz, CD30D) 81.20-1.55 (6H, m), 1.65-2.10 (4H, m), 3.90 (1H, m), 7.21 (lH, s), 7.61 (lH, d, J = 5.4 Hz), 7.93 (lH, d, J = 5.4 Hz) ; ESI MS m/z 278 [C14H16ClN3O + H](at).7-Chloro-N-cyclohexyl-1H-pyrrolo[2,3-c]pyridine-2- carboxamide (230 mg, 0.828 mmol), triethylamine (0.25 mL) and palladium (II) chloride (3 mg, 2 mol%) were combined in N,N- dimethylformamide (5 mL) under an atmosphere of hydrogen. The (at)’l’i£c£i(at)d£”‘”‘£tI%8(at)tlr(at)”(at)(at)(at)lk9″”(at)(at)ti(at)lated at 60C for 3 h. The reaction mixture was cooled to room temperature and the catalyst was removed by filtration through a pad of diatomaceous earth and washed with ethyl acetate. Evaporation of the solvents provided crude product (169 mg, 84%) as an off-white solid. Purification by chromatography (Si02; 0-10% methanol in methylene chloride, 1400 mL) afforded N-cyclohexyl-1H- pyrrolo [2,3-c]pyridine-2-carboxamide (101 mg, 0.414 mmol, 50%) as fine, white needles: mp 298-301C, ¹H NMR (300 MHz, CD30D) 8 1.20-1.55 (6H, m), 1.65-2.10 (4H, m), 3.90 (lH, m), 7.21 (1H, s), 7.15 (1H, s), 7.65 (lH, d, J = 5.7 Hz), ‘8.09 (lH, d, J = 5.7 Hz), 8.77 (lH, s) ; ESI MS m/z 244 [C14H17N3O + H] +; HPLC (Method A) >99% (AUC), tR = 13.2 min.

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 867034-10-4, Ethyl 7-chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; WO2005/97129; (2005); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem