Category: 2762-32-5

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2762-32-5,Piperazine-2-carboxylic acid,as a common compound, the synthetic route is as follows.

2-Piperazinecarboxylic acid and 2-chloro-1, 3-pyrimidine were stirred with triethylamine and MeOH. After stirring overnight at reflux, the mixture was filtered and concentrated in vacuo to give the desired compound which was used directly in Step B (MH+ = 209).

2762-32-5, As the paragraph descriping shows that 2762-32-5 is playing an increasingly important role.

Reference：
Patent; SCHERING CORPORATION; PHARMACOPEIA DRUG DISCOVERY, INC.; WO2005/68460; (2005); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2762-32-5,Piperazine-2-carboxylic acid,as a common compound, the synthetic route is as follows.

2-Piperazinecarboxylic acid and 2-chloro-1, 3-pyrimidine were stirred with triethylamine and MeOH. After stirring overnight at reflux, the mixture was filtered and concentrated in vacuo to give the desired compound which was used directly in Step B (MH+ = 209).

2762-32-5, As the paragraph descriping shows that 2762-32-5 is playing an increasingly important role.

Reference：
Patent; SCHERING CORPORATION; PHARMACOPEIA DRUG DISCOVERY, INC.; WO2005/68460; (2005); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

2762-32-5, Piperazine-2-carboxylic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

54a. 4-((Benzyloxy)carbonyl)-1 -(tert-butoxycarbonyl)piperazine-2- carboxylic acidThe tile compound was prepared according to the procedure of [Kempf, D. J.; Norbeck, D. W.; Sham, H. L U.S. Patent 5,455,351 , Oct 3, 1995]. Piperazine-2-carboxylic acid (10.0 g, 77.0 mmol) was dissolved in a 1 :1 solution of 1 ,4-dioxane:water (100 mL) at room temperature with vigorous stirring. The clear solution was adjusted to pH 11 by the addition of an aqueous solution of sodium hydroxide (80 mL of a 1Lambda/ solution). The pH was monitored in situ with a pH meter throughout the reaction. The reaction flask was fitted with an addition funnel that contained a solution of Lambda/-alpha- (benzyloxycarbonyloxy) succinamide (13.6 g, 55 mmol) in 1 ,4-dioxane (50 mL). The Lambda/-alpha-(benzyloxycarbonyloxy) succinamide solution was added over 45 minutes at room temperature and the pH was kept above 10 by the periodic addition of 1 Lambda/ sodium hydroxide. The pH of the solution was adjusted to 9.5 and 2-(teAf-butoxycarbonyloxyimino)-2-phenylacetonitrile (13.4 g, 55 mmol) was added as a solution in 1 ,4-dioxane (50 mL) over 10 minutes. The pH was maintained at 9.5 and the solution was stirred at room temperature for 17 hours. The solution was then acidified to pH 2 and the aqueous solution was washed with diethyl ether (3 x 150 mL). The aqueous solution was cooled to O0C and acidified by adding of concentrated hydrochloric acid. The acidic solution was extracted with ethyl acetate (5 x 150 mL). The combined organic phases were dried over sodium sulfate, filtered and concentrated in vacuo. The residue was triturated with a 1 :1 solution of dichloromethane: hexanes (150 mL) and the solvent was removed in vacuo to provide the product as a viscous yellow oil (15.7 g, 43 mmol, 80%). Rf = 0.60 (66:34 dichloromethane: ethyl acetate + 0.1% (v/v acetic acid); 1H-NMR (400 MHz, DMSO) delta 13.0 (br s, 1 H), 7.37-7.36 (m, 5H), 5.05 (s, 2H), 4.54-4.33 (m, 2H), 3.90-3.66 (m, 2H), 3.07-2.81 (m, 4H), 1.38 (s, 9H); Mass spectrum (ESI +ve) m/z 365.1 (MH+).

2762-32-5, The synthetic route of 2762-32-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; BIKAM PHARMACEUTICALS, INC.; GARVEY, David, S.; LAROSA, Gregory, J.; GREENWOOD, Jeremy, Robert; BREWER, Mark, L.; QUACH, Tan; COTE, Jamie, B.; BERMAN, Judd; WO2010/147653; (2010); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

2762-32-5, Piperazine-2-carboxylic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

PREPARATIVE EXAMPLE 2.9; Step A; N Yco H Step B CN C02H N COSY ) 10 N N P w H 1-YN H N I HO2C O OH H02C 0 OH O OH btep A 2-Piperazinecarboxylic acid and 2-chloro-1, 3-pyrimidine were stirred with triethylamine and MeOH. After stirring overnight at reflux, the mixture was filtered and concentrated in vacuo to give the desired compound which was used directly in Step B (MH+ = 209)., 2762-32-5

2762-32-5 Piperazine-2-carboxylic acid 2723758, apiperazines compound, is more and more widely used in various fields.

Reference：
Patent; SCHERING CORPORATION; PHARMACOPEIA DRUG DISCOVERY, INC.; WO2005/66147; (2005); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2762-32-5,Piperazine-2-carboxylic acid,as a common compound, the synthetic route is as follows.

2-Piperazinecarboxylic acid and 2-chloro-1,3-pyrimidine were stirred with triethylamine and MeOH. After stirring overnight at reflux, the mixture was filtered and concentrated in vacuo to give the desired compound which was used directly in Step B (MH+=209)., 2762-32-5

The synthetic route of 2762-32-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Schering Corporation; US2004/106794; (2004); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

2762-32-5, Piperazine-2-carboxylic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

2-Piperazinecarboxylic acid and 2-chloro-l,3-py-rimidine were stirred with triethylamine and MeOH. After stirring overnight at reflux, the mixture was filtered and concentrated in vacuo to give the desired compound which was used directly in Step B (MH+=209).

2762-32-5, As the paragraph descriping shows that 2762-32-5 is playing an increasingly important role.

Reference£º
Patent; Schering Corporation and Pharmacopeia, Inc.; US2004/147559; (2004); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

2762-32-5, Piperazine-2-carboxylic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

54a. 4-((Benzyloxy)carbonyl)-1 -(tert-butoxycarbonyl)piperazine-2- carboxylic acidThe tile compound was prepared according to the procedure of [Kempf, D. J.; Norbeck, D. W.; Sham, H. L U.S. Patent 5,455,351 , Oct 3, 1995]. Piperazine-2-carboxylic acid (10.0 g, 77.0 mmol) was dissolved in a 1 :1 solution of 1 ,4-dioxane:water (100 mL) at room temperature with vigorous stirring. The clear solution was adjusted to pH 11 by the addition of an aqueous solution of sodium hydroxide (80 mL of a 1Lambda/ solution). The pH was monitored in situ with a pH meter throughout the reaction. The reaction flask was fitted with an addition funnel that contained a solution of Lambda/-alpha- (benzyloxycarbonyloxy) succinamide (13.6 g, 55 mmol) in 1 ,4-dioxane (50 mL). The Lambda/-alpha-(benzyloxycarbonyloxy) succinamide solution was added over 45 minutes at room temperature and the pH was kept above 10 by the periodic addition of 1 Lambda/ sodium hydroxide. The pH of the solution was adjusted to 9.5 and 2-(teAf-butoxycarbonyloxyimino)-2-phenylacetonitrile (13.4 g, 55 mmol) was added as a solution in 1 ,4-dioxane (50 mL) over 10 minutes. The pH was maintained at 9.5 and the solution was stirred at room temperature for 17 hours. The solution was then acidified to pH 2 and the aqueous solution was washed with diethyl ether (3 x 150 mL). The aqueous solution was cooled to O0C and acidified by adding of concentrated hydrochloric acid. The acidic solution was extracted with ethyl acetate (5 x 150 mL). The combined organic phases were dried over sodium sulfate, filtered and concentrated in vacuo. The residue was triturated with a 1 :1 solution of dichloromethane: hexanes (150 mL) and the solvent was removed in vacuo to provide the product as a viscous yellow oil (15.7 g, 43 mmol, 80%). Rf = 0.60 (66:34 dichloromethane: ethyl acetate + 0.1% (v/v acetic acid); 1H-NMR (400 MHz, DMSO) delta 13.0 (br s, 1 H), 7.37-7.36 (m, 5H), 5.05 (s, 2H), 4.54-4.33 (m, 2H), 3.90-3.66 (m, 2H), 3.07-2.81 (m, 4H), 1.38 (s, 9H); Mass spectrum (ESI +ve) m/z 365.1 (MH+).

2762-32-5, The synthetic route of 2762-32-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BIKAM PHARMACEUTICALS, INC.; GARVEY, David, S.; LAROSA, Gregory, J.; GREENWOOD, Jeremy, Robert; BREWER, Mark, L.; QUACH, Tan; COTE, Jamie, B.; BERMAN, Judd; WO2010/147653; (2010); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2762-32-5,Piperazine-2-carboxylic acid,as a common compound, the synthetic route is as follows.

2-PIPERAZINECARBOXYLIC acid and 2-CHLORO-1, 3-pyrimidine were stirred with triethylamine and MeOH. After stirring overnight at reflux, the mixture was filtered and concentrated in vacuo to give the desired compound which was used directly in Step B (MH+ = 209).

2762-32-5, 2762-32-5 Piperazine-2-carboxylic acid 2723758, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; PHARMACOPEIA, INC.; WO2004/33440; (2004); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics