Category: 182618-86-6

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.182618-86-6,1-Boc-4-(4-Nitrophenyl)piperazine,as a common compound, the synthetic route is as follows.

To a stirred solution of 61 tert-butyl 4-(4-nitrophenyl)piperazine-1-carboxylate (6.50 g, 21.17 mmol, 1.0 eq) in 100 mL of 6 ethanol: 7 water (1:1) mixture were added 67 NH4Cl (11.40 g, 211 mmol, 10 eq) and Fe(0) (4.70 g, 84.68 mmol, 4.0 eq). Reaction mixture was heated at 80 C. for 4 h. Progress of reaction was monitored by LCMS. Upon the consumption of starting material, solvent was removed under reduced pressure. Aqueous layer was basified with saturated solution of 68 sodium carbonate and extracted with ethyl acetate (200 mL×2). Combined organic layer was washed with 50 mL of brine solution, dried over anhydrous Na2SO4 and concentrated under reduced pressure to obtain 4.0 g (68%) of 69 tert-butyl 4-(4-aminophenyl)piperazine-1-carboxylate.LCMS: 278 [M+1]+

182618-86-6, As the paragraph descriping shows that 182618-86-6 is playing an increasingly important role.

Reference：
Patent; giraFpharma LLC; Chakravarty, Sarvajit; PHAM, Son Minh; Kankanala, Jayakanth; AGARWAL, Anil Kumar; PUJALA, Brahmam; SONI, Sanjeev; ARYA, Satish K.; PALVE, Deepak; KUMAR, Varun; (360 pag.)US2019/106436; (2019); 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.182618-86-6,1-Boc-4-(4-Nitrophenyl)piperazine,as a common compound, the synthetic route is as follows.

Add 1 g of crude I-i (32.6 mmol) to a 500 mL single-necked flask. 1.0 g of FeO(OH)/C catalyst and 100 mL of 95% ethanol, heated to reflux. Slowly add a mixture of 10 mL of hydrazine hydrate and 20 mL of 95% ethanol. The disappearance of the starting material by TLC (methanol: chloroform = 1:15). The filter cake was washed twice with hot ethanol (30 mL × 2). The solvent was evaporated under reduced pressure to give a white solid. It was dried under vacuum to give (I-j) 7.86 g, yield: 87.1%. The product was directly fed to the next reaction without further purification.

182618-86-6, As the paragraph descriping shows that 182618-86-6 is playing an increasingly important role.

Reference：
Patent; China Pharmaceutical University; Wang Yue; Lu Shuai; Zhi Yanle; Yao Chao; Lu Tao; Li Baoquan; Chen Puzhou; Bao Jiyin; (26 pag.)CN109970717; (2019); A;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

182618-86-6, 1-Boc-4-(4-Nitrophenyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A suspension of 4-(4-nitro-phenyl)-piperazine-1-carboxylic acid tert-butyl ester (Step 8.3) (1.26 g, 4.1 mmol) and palladium on carbon (200 mg) in MeOH (30 ml.) was stirred for 30 min at rt, under a hydrogen atmosphere. The reaction mixture was filtered through a pad of celite and concentrated to afford 1.1 g of the title compound as a pink solid: ESI-MS: 278.2 [M+H]+; tR= 2.85 min (System 1 )., 182618-86-6

182618-86-6 1-Boc-4-(4-Nitrophenyl)piperazine 3380696, apiperazines compound, is more and more widely used in various fields.

Reference：
Patent; NOVARTIS AG; WO2009/141386; (2009); 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.182618-86-6,1-Boc-4-(4-Nitrophenyl)piperazine,as a common compound, the synthetic route is as follows.,182618-86-6

The solvent was removed and the residue was taken up with methanol, Pd-C (10%) was added and stirred under hydrogen overnight at room temperature and then filtered through Celite and concentrated in vacuo. The crude product was purified by flash chromatography to afford 0.457 g product (60%).

As the paragraph descriping shows that 182618-86-6 is playing an increasingly important role.

Reference：
Article; Mou, Jianfeng; Park, Ann; Cai, Yu; Yuan, Junying; Yuan, Chengye; Bioorganic and Medicinal Chemistry Letters; vol. 25; 15; (2015); p. 3057 – 3061;,
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.182618-86-6,1-Boc-4-(4-Nitrophenyl)piperazine,as a common compound, the synthetic route is as follows.

tert-Butyl 4-(4-nitrophenyl)piperazine-1-carboxyiate (11) (3.24 g, 10.5 mmol) was dissolved in EtOAc (90 mL) under an atmosphere of nitrogen and a slurry of 10% Pd/C (0.500 g) in EtOAc (10 mL) was added. The resulting suspension was then stirred vigorously under an atmosphere of hydrogen at room temperature for 42 hours. The catalyst was removed by filtration through Celite, which was washed with EtOAc (7 x 10 mL) and the solvent was removed in vacuo to give the title compound (12) (2.92 g, 99 % yield) as a pale pink solid; 1H N R (400 MHz, afe-DMSO) delta 6.72 – 6.66 (m, 2H), 6.52 – 6.45 (m, 2H), 4.60 (s, 2H), 3.44 – 3.39 (m, 4H), 2.87 – 2.79 (m, 4H), 1.41 (s, 9H). LCMS Method C: rt 4.40 min; m/z 278.2 [M+H]+., 182618-86-6

The synthetic route of 182618-86-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CANCER THERAPEUTICS CRC PTY LTD; DEVLIN, Mark Graeme; STREET, Ian Philip; TONG, Warwick Bonner; WO2014/27199; (2014); 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.182618-86-6,1-Boc-4-(4-Nitrophenyl)piperazine,as a common compound, the synthetic route is as follows.

182618-86-6, A mixture of 4-(4-nitro-phenyl)-piperazine-l-carboxylic acid tert-butyl ester (3 g, 9.76 mmol) and 10% palladium on carbon (300 mg) in 50 mL ethanol and 20 mL ethyl acetate was hydrogenated at room temperature under a 50 psi hydrogen atmosphere for 2 hrs.The reaction mixture was filtered through a plug of Celite and evaporated under reduced pressure to give 4-(4-amino-phenyl)-piperazine-l-carboxylic acid tert-butyl ester that was used in the in the next step without further purification.

The synthetic route of 182618-86-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; WO2008/141976; (2008); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

182618-86-6, 1-Boc-4-(4-Nitrophenyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Reference Example 17b 4-(4-Amino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester 4-(4-Amino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester was prepared from 4-(4-Nitro-phenyl)-piperazine-1-carboxylic acid tert-butyl ester, (as prepared in Reference Example 17a) as prepared in Reference Example 13b., 182618-86-6

The synthetic route of 182618-86-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Pierson, Edward; Sohn, Daniel; Haeberlein, Markus; Davenport, Timothy; Chapdelaine, Marc; Horchler, Carey; McCauley, John P.; US2003/13708; (2003); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

182618-86-6, 1-Boc-4-(4-Nitrophenyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: To a solution of 1a (5 g, 22.5 mmol) in 95% ethanol (100 mL) wasadded goethite (FeO(OH))/C (1.0 g) at room temperature. And a solution of 80% hydrazine hydrate (25 mL, 400 mmol) in 95% ethanol (50 mL) was added dropwise to the mixture at 0 C. The reaction mixture was stirred at 80 C for 4 h. The solvent was removed in vacuo to give 2a (3.8 g, yield 74.5%). MS m/z: 278.2 [M+H]+.

182618-86-6, As the paragraph descriping shows that 182618-86-6 is playing an increasingly important role.

Reference£º
Article; Bao, Jiyin; Liu, Haichun; Zhi, Yanle; Yang, Wenqianzi; Zhang, Jiawei; Lu, Tao; Wang, Yue; Lu, Shuai; Bioorganic Chemistry; vol. 94; (2020);,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

182618-86-6, 1-Boc-4-(4-Nitrophenyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

ferf-Butyl 4-(4-nitrophenyl)piperazine-1-carboxylate (11) (3.24 g, 10.5 mmol) was dissolved in EtOAc (90 mL) under an atmosphere of nitrogen and a slurry of 10% Pd/C (0.500 g) in EtOAc (10 mL) was added. The resulting suspension was then stirred vigorously under an atmosphere of hydrogen at room temperature for 42 hours. The catalyst was removed by filtration through Celite, which was washed with EtOAc (7 x 10 mL) and the solvent was removed in vacuo to give the title compound (12) (2.92 g, 99 % yield) as a pale pink solid; 1H NMR (400 MHz, oVDMSO) delta 6.72 – 6.66 (m, 2H), 6.52 – 6.45 (m, 2H), 4.60 (s, 2H), 3.44 – 3.39 (m, 4H), 2.87 – 2.79 (m, 4H), 1.41 (s, 9H). LCMS Method C: rt 4.40 min; m/z 278.2 [M+H]+., 182618-86-6

As the paragraph descriping shows that 182618-86-6 is playing an increasingly important role.

Reference£º
Patent; CANCER THERAPEUTICS CRC PTY LIMITED; HOLMES, Ian, Peter; BERGMAN, Ylva; LUNNISS, Gillian Elizabeth; NIKAC, Marica; CHOI, Neil; HEMLEY, Catherine Fae; WALKER, Scott Raymond; FOITZIK, Richard Charles; GANAME, Danny; LESSENE, Romina; WO2012/110773; (2012); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics