Simple exploration of 154590-35-9

154590-35-9 tert-Butyl 4-(4-amino-2-fluorophenyl)piperazine-1-carboxylate 16203630, apiperazines compound, is more and more widely used in various fields.

154590-35-9, tert-Butyl 4-(4-amino-2-fluorophenyl)piperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 1: Cool in ice a solution of the product of Preparation 13, Step 3 (1.50 g, 5.1 mmol) in THF (40 ml). Add DIPEA (1.08 ml, 6.2 mmol), then 2-chloroethyl chloroformate (0.76 g, 5.3 mmol). Stir 3 h and partition with ether and satd. NaHCO3. Dry (MgSO4) and concentrate to obtain the carbamate as a brown solid, 154590-35-9

154590-35-9 tert-Butyl 4-(4-amino-2-fluorophenyl)piperazine-1-carboxylate 16203630, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Schering Corporation; US2004/220194; (2004); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

Downstream synthetic route of 655225-01-7

655225-01-7 tert-Butyl 4-(2-bromoethyl)piperazine-1-carboxylate 15946441, apiperazines compound, is more and more widely used in various fields.

655225-01-7, tert-Butyl 4-(2-bromoethyl)piperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

655225-01-7, A mixture of 4-bromo-6-hydroxypyrazolo[l,5-a]pyridine-3-carbonitrile (Intermediate PI, 200 mg, 0.840 mmol) in DMA (4.20 mL) was treated sequentially with K2CCb(s) (348 mg, 12.1 mmol) and tert-butyl 4-(2-bromoethyl)piperazine-l -carboxylate (493 mg, 1.68 mmol), then stirred for 3 h at 60 ¡ãC. After cooling to ambient temperature, the mixture was diluted with brine. The resulting suspension was filtered, and the solids were rinsed with water (5x). The solids the were collected, dissolved in DCM and concentrated in vacuo to cleanly afford the title compound (239 mg, 63percent yield). MS (apci) m/z = 452.0 (M+H).

655225-01-7 tert-Butyl 4-(2-bromoethyl)piperazine-1-carboxylate 15946441, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; ANDREWS, Steven W.; ARONOW, Sean; BLAKE, James F.; BRANDHUBER, Barbara J.; COLLIER, James; COOK, Adam; HAAS, Julia; JIANG, Yutong; KOLAKOWSKI, Gabrielle R.; MCFADDIN, Elizabeth A.; MCKENNEY, Megan L.; MCNULTY, Oren T.; METCALF, Andrew T.; MORENO, David A.; RAMANN, Ginelle A.; TANG, Tony P.; REN, Li; WALLS, Shane M.; (946 pag.)WO2018/71454; (2018); A1;,
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Piperazines – an overview | ScienceDirect Topics

Analyzing the synthesis route of 55112-42-0

The synthetic route of 55112-42-0 has been constantly updated, and we look forward to future research findings.

55112-42-0, 4-Methyl-1-piperazinecarbonyl Chloride Hydrochloride is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

55112-42-0, EXAMPLE 107: 4-(4-(l,3-BenzothiazoI-6-ylamino)-7fl-pyrrolo[2,3-rf|-pyrimidin-6-yl)methylpiperazinyI-3,6-dihydropyridine-l(2fl)-yI)-carboxamide.; [342] To a suspension of benzothiazol-6-yl-[6-(l ,2,3,6-tetrahydropyridin-4-yl)-7^-pyrrolo[2,3-J]pyrimidin-4-yl]-amine tris-hydrochloride (200mg, 0.44mmol) in NJJ-dimethylformamide (6mL) was added AfAf-diisopropylethylamine (O.SmL, 3mmol). Thereaction mixture was stirred at 0C for 5min prior to the addition of 4-methylpiperazine-l-carbonyl chloride hydrochloride (87mg, 0.44mmol). The resulting mixture was stirred at 0Cfor Ih, diluted with water (50mL), and the resulting precipitate was collected by filtration,washed with EtOAc (5mL), and dried in vacua to give the title compound. LC-MS (ES,Pos.): 474 [MH+], and ‘H NMR (DMSO-d6, 400 MHz): 5 = 1.99 (s, 3H), 2.24 (m, 4H), 2.50(m, 2H), 3.18 (m, 4H), 3.41 (m, 2H), 3.93 (m, 2H), 6.41 (s, IH), 6.82 (s, IH), 7.87 (d, J= 8.8Hz, IH), 8.04 (d, J= 8.8 Hz, IH), 8.34 (s, IH), 8.91 (s, IH), 9.23 (s, IH), 9.59 (s, IH), 11.99(s, IH).

The synthetic route of 55112-42-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; OSI PHARMACEUTICALS, INC.; WO2006/17443; (2006); A2;,
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Brief introduction of 1235865-77-6

The synthetic route of 1235865-77-6 has been constantly updated, and we look forward to future research findings.

1235865-77-6, 2-((1H-Pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(4-((4′-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1′-biphenyl]-2-yl)methyl)piperazin-1-yl)benzoic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 2-((1 H-pyrrolo[2,3 -b]pyridin-5 -yl)oxy)-4-(4-((4?-chloro-S,S- dimethyl-3 ,4,5 ,6-tetrahydro- [1,1 ?-biphenyl] -2-yl)methyl)piperazin-1 -yl)benzoic acid (1-1 b) (0.010 g, 0.02 mmol), (S)-2-(morpholinomethyl)-7-nitroindoline-5 -sulfonamide (1-la) (6.7 mg, 0.02 mmol), EDCT (0.011 g, 0.06 mmol), Et3N (6.0 mg, 0.06 mmol) and DMAP (8.0 mg, 0.06 mmol) in DCM (4 mL) was stirred at 30C for 20 h. The mixture was extracted by DCM (25 mL), washed with brine (15 mL), dried with Na2SO4 and concentrated. The residue was purified by preparative TLC eluting with DCM / MeOH (15:1) to give the title compound (S)-2-((1H-pyrrolo[2,3 -b]pyridin-5 -yl)oxy)-4-(4-((4?-chloro-5,5-dimethyl-3 ,4,5,6-tetrahydro-[1 , 1?-biphenyl] -2-yl)methyl)piperazin- 1 -yl)-N-((2-(morpholinomethyl)-7-nitroindolin-5 -yl)sulfonyl)b enzamide (1-1). MS-ESI (m/z): 895 [M+ 1]., 1235865-77-6

The synthetic route of 1235865-77-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SHANGHAI FOCHON PHARMACEUTICAL CO., LTD.; FOCHON PHARMACEUTICALS, LTD.; LIU, Hongbin; RONG, Yue; ZHANG, Huajie; CHEN, Zhifang; TAN, Rui; HE, Chengxi; LI, Zhifu; ZHOU, Zuwen; TAN, Haohan; RAN, Kai; WANG, Xianlong; ZOU, Zongyao; JIANG, Lihua; LIU, Yanxin; ZHAO, Xingdong; WANG, Weibo; (173 pag.)WO2018/192462; (2018); A1;,
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Analyzing the synthesis route of 112984-60-8

112984-60-8, The synthetic route of 112984-60-8 has been constantly updated, and we look forward to future research findings.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.112984-60-8,6-Fluoro-1-methyl-4-oxo-7-(piperazin-1-yl)-1,4-dihydro-[1,3]thiazeto[3,2-a]quinoline-3-carboxylic acid,as a common compound, the synthetic route is as follows.

To a solution of 6-fluoro-1-methyl-4-oxo-7-(1-piperazinyl)-4H-[1 ,3]-thiazeto-[3,2-a]- quinoline-3-carboxylic acid of formula IV (100 gms, 0.286 moles) in 4.0 It of acetonitrile, DIPEA (70 ml , 0.402 moles)) was added at room temperature, stirred for 10 minutes. The reaction mass was cooled to 10-15C and a solution of 4-(bromomethyl)-5-methyl- 1 ,3-dioxol-2-one (formula V) in 500 ml of acetonitrile was slowly added at 10-15C over a period of 1 hour. The contents were stirred at 25-30C for 20 hour, filtered over hyflo, and the bed washed with 200 ml of acetonitrile. The solvent was distilled off completely under vacuum below 50C. Acetonitrile (100 ml) was added at 50C and the contents were stirred for 30-60 minutes. The reaction mass was slowly chilled to 0-5C and the precipitated solid was filtered, washed with acetonitrile (25 ml) and dried to yield 65 gms of prulifloxacin.

112984-60-8, The synthetic route of 112984-60-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CIPLA LIMITED; PATHI, Srinivas Laxminarayan; RAO, Dharmaraj Ramachandra; KANKAN, Rajendra; CHINIMILLI, Venugopalarao; CURTIS, Philip Anthony; WO2012/1357; (2012); A1;,
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Some tips on 75336-86-6

The synthetic route of 75336-86-6 has been constantly updated, and we look forward to future research findings.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.75336-86-6,(R)-2-Methylpiperazine,as a common compound, the synthetic route is as follows.

Step B: 3-(6,8-dimethylimidazo[1,2-a]pyrazin-2-yl)-7-fluoro-2H-chromen-2-one hydrobromide (100 mg, 0.25 mmol) was stirred with (R)-2-methylpiperazine (52 mg, 0.52 mmol) in DMSO (0.5 mL) with K2CO3 (0.14 g, 1.0 mmol) at 120¡ã C. for 2 h. The mixture was cooled to room temperature and diluted with water to produce a precipitate. The solid was collected by vacuum filtration and purified by silica gel chromatography (10percent MeOH in CH2Cl2) to give the title compound (64 mg, 64percent) as a yellow solid. MS m/z 390.2 [M+H]+; 1H NMR (500 MHz, CDCl3): delta 8.74 (1H, s), 8.45 (1H, s), 7.77 (1H, s), 7.51 (1H, d, J=8.8 Hz), 6.88 (1H, dd, J=8.8 Hz, 2.5 Hz), 6.77 (1H, d, J=2.5 Hz), 3.77-3.67 (2H, m), 3.21-3.14 (2H, m), 3.06-2.92 (3H, m), 2.91 (3H, s), 2.64-2.56 (1H, m), 2.48 (3H, s), 1.20 (3H, d, J=6.3 Hz)., 75336-86-6

The synthetic route of 75336-86-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; PTC Therapeutics, Inc.; F. Hoffmann-La Roche AG; Woll, Matthew G.; Chen, Guangming; Choi, Soongyu; Dakka, Amal; Huang, Song; Karp, Gary Mitchell; Lee, Chang-Sun; Li, Chunshi; Narasimhan, Jana; Naryshkin, Nikolai; Paushkin, Sergey; Qi, Hongyan; Turpoff, Anthony A.; Weetall, Marla L.; Welch, Ellen; Yang, Tianle; Zhang, Nanjing; Zhang, Xiaoyan; Zhao, Xin; Pinard, Emmanuel; Ratni, Hasane; (317 pag.)US9617268; (2017); B2;,
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Piperazines – an overview | ScienceDirect Topics

Some tips on 928025-56-3

The synthetic route of 928025-56-3 has been constantly updated, and we look forward to future research findings.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.928025-56-3,(S)-tert-Butyl 3-ethylpiperazine-1-carboxylate,as a common compound, the synthetic route is as follows.,928025-56-3

To a solution of tert-butyl (S)-3-ethylpiperazine-1-carboxylate (150 mg, 0.700 mmol) and 4,4′-(chloromethylene)bis(fluorobenzene) (0.131 mL, 0.700 mmol) in acetonitrile (2 mL) was added DIPEA (0.244 mL, 1.400 mmol). The reaction mixture was heated to 80 C for 2 h. and diluted with water. The mixture was extracted twice with ethyl acetate (20 mL). The organic layer was separated, dried over Na2SO4 and evaporated to dryness. The crude was purified by ISCO (Column: 24 g RediSep silica, Solvent run: 0-50 % EtOAc in petroleum ether). The product was eluted at 30 % EtOAc in petroleum ether to afford tert-butyl (S)-4-(bis(4-fluorophenyl)methyl)-3- ethylpiperazine-1-carboxylate (50 mg, 8.8 % yield); LCMS: m/z = 417.4 (M+H); rt 2.39 min. Method: AQUITY UPLC BEH C18 (3.0 x 50 mm) 1.7 ^m, Mobile phase A:10 mM ammonium acetate:acetonitrile (95:5) Mobile phase B: 10 mM ammonium (1077) acetate:acetonitrile (5:95), Flow: 0.7 mL/min

The synthetic route of 928025-56-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BRISTOL-MYERS SQUIBB COMPANY; VELAPARTHI, Upender; CHUPAK, Louis S.; DARNE, Chetan Padmakar; DING, Min; GENTLES, Robert G.; HUANG, Yazhong; KAMBLE, Manjunatha Narayana Rao; MARTIN, Scott W.; MANNOORI, Raju; MCDONALD, Ivar M.; OLSON, Richard E.; RAHAMAN, Hasibur; JALAGAM, Prasada Rao; ROY, Saumya; TONUKUNURU, Gopikishan; VELAIAH, Sivasudar; WARRIER, Jayakumar Sankara; ZHENG, Xiaofan; TOKARSKI, John S.; DASGUPTA, Bireshwar; REDDY, Kotha Rathnakar; RAJA, Thiruvenkadam; (0 pag.)WO2020/6018; (2020); A1;,
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Piperazines – an overview | ScienceDirect Topics

New learning discoveries about 30459-17-7

30459-17-7, As the paragraph descriping shows that 30459-17-7 is playing an increasingly important role.

30459-17-7, 1-(4-Trifluoromethylphenyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

2-Thienylacetic acid (54 mg, 0.39 mmol), HOBt (58 mg, 0.43 mmol), TBTU (138 mg, 0.43 mmol), anhydrous triethylamine (87 ??, 0.63 mmol) and dry DMF (2 ml) were placed in an oven-dried Schlenk tube under a nitrogen atmosphere. The resulting solution was stirred at room temperature for 15 minutes. A second Schlenk tube was prepared containing 1-(4-trifluoromethyl phenyl) piperazine (100 mg, 0.43 mmol and dry DMF (1 ml) under a nitrogen atmosphere. The resulting solution was stirred until complete dissolution of the piperazine had occurred. The piperazine solution was then transferred, via a cannula, to the first Schlenk tube containing the carboxylic acid. The resulting solution was stirred for 24 hrs, under nitrogen, and monitored by TLC. After 24 hrs, the DMF was removed under reduced pressure and the resulting oil was acidified using a 0.1 M hydrochloric acid solution. The aqueous mixture was extracted with dichloromethane (20 ml, followed by 4 x 10 ml) and the organic layer washed with a saturated sodium bicarbonate solution (3 x 20 ml) and brine (3 x 20 ml). The organic layer was dried over magnesium sulphate and evaporated under reduced pressure. The residue was purified using flash chromatography (3:2, EtOAc:n-hexane) to obtain the desired product in an 20 % yield. H NMR (300 MHz, CDCI3) ? 7.47 (d, 2H), 7.19 (dd, 1 H), 6.88-6.97 (m, 4H), 3.96 (s, 2H), 3.79 (t, 2H), 3.66 (t, 2H), 3.24 (t, 2H), 3.15 (t, 2H). MS (+ESI) calcd for C17 H17 F3 N2 02 S m/z: [M + H]+ , 355.1086; found 355.1084 [Diff(ppm) = -0.56].

30459-17-7, As the paragraph descriping shows that 30459-17-7 is playing an increasingly important role.

Reference£º
Patent; NATIONAL UNIVERSITY OF IRELAND, MAYNOOTH; STEPHENS, John; FINDLAY, John; KINSELLA, Gemma; MARTIN, Darren; DEVINE, Robert; VELASCO-TORRIJOS, Trinidad; WO2013/60860; (2013); A1;,
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Piperazines – an overview | ScienceDirect Topics

Simple exploration of 3022-15-9

3022-15-9 Piperazine-2-carboxylic acid dihydrochloride 2723757, apiperazines compound, is more and more widely used in various fields.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.3022-15-9,Piperazine-2-carboxylic acid dihydrochloride,as a common compound, the synthetic route is as follows.

Example 172 [4- (3-CHLORO-5-HYDROXYMETHYL-PYRIDIN-2-YL)-1- [5-TRIFLUOROMETHYL-7- (3,] 4,5- [TRIFLUORO-PHENYL)-LH-BENZOIMIDAZOL-2-YL]-PIPERAZINE-2-CARBOXYLIC ACID] methylamide. (a) Piperazine-1,2, 4-tricarboxylic acid 1,4-dibenzyl ester. Benzyl chloro formate (3.1 mL, 22 mmol, Aldrich) was added dropwise over a period of 5 min to a mixture of piperazine-2-carboxylic acid dihydrochloride (2.03 g, 10 mmol, Aldrich) and [NA2C03] (4.24 g, 40 mmol) in water (10 mL) with stirring at [0 C.] The mixture was stirred at [0 C] for 1 h, 2N [HC1] (10 mL) was added and the mixture was extracted with EtOAc (3 x 40 mL). The combined organic extracts were washed with water (10 mL) and brine (20 mL), dried over Na2S04, and filtered. The filtrate was evaporated in vacuo to give the title compound as a gum, which was used for the next step without additional purification. MS (ESI, pos. ion) m/e: 399 (M+1)., 3022-15-9

3022-15-9 Piperazine-2-carboxylic acid dihydrochloride 2723757, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; AMGEN INC.; WO2004/35549; (2004); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

New learning discoveries about 169447-70-5

The synthetic route of 169447-70-5 has been constantly updated, and we look forward to future research findings.

169447-70-5, (S)-tert-Butyl 2-methylpiperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a dried flask was added (S)-tert-butyl 2-methylpiperazine-1-carboxylate (52.3 mg, 0.261 mmol),rac-benzyl ((2S,3R,4R)- I -acetyl-6-bromo-2-cyclopropyl-3-methyl- 1,2 ,3,4-tetrahydroquinolin-4-yl)carbamate (for a preparation see Intermediate 13, 99.5 mg, 0.218 mmol), sodium tert-butoxide (41.8 mg, 0.435 mmol), Pd2(dba)3 (9.96 mg, 10.88 pmol) and DavePhos (8.56 mg, 0.022 mmol) under nitrogen. To this was added 1,4-dioxane (2 mL), and the solution was stirred and degassed with nitrogen for -15 mm. The mixture was heated to 90 C overnight. The mixture was allowed tocool to rt, filtered through a 2.5 g celite cartridge, washed through with ethyl acetate and concentrated in vacuo. The residue was taken up in dichloromethane, loaded onto a 25 g silica flash column, and eluted in 10%-50% ethyl acetate in cyclohexane. The appropriate fractions were collected and concentrated in vacuo to afford a yellow oil (48.4 mg, 0.084 mmol, 38.6%). This was a mixture of diastereoisomers. LCMS (2 mm formic): Rt = 1 .29 mi [MH] = 577., 169447-70-5

The synthetic route of 169447-70-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; GLAXOSMITHKLINE INTELLECTUAL PROPERTY (NO.2) LIMITED; AMANS, Dominique; ATKINSON, Stephen John; HARRISON, Lee Andrew; HIRST, David Jonathan; LAW, Robert Peter; LINDON, Matthew; PRESTON, Alexander; SEAL, Jonathan Thomas; WELLAWAY, Christopher Roland; WO2014/140076; (2014); A1;,
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Piperazines – an overview | ScienceDirect Topics