Tag: M.W:200-300

120737-78-2, tert-Butyl 2-methylpiperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 12A tert-butyl (2R)-2-methyl-4-[(6-{[5-(trifluoromethyl)pyridin-2-yl]oxy}quinolin-2-yl)carbonyl]piperazine-1-carboxylate The product from Example 1D (200 mg, 0.56 mmol) was subjected to the conditions described in Example 11, substituting (R)-tert-butyl 2-methylpiperazine-1-carboxylate for 4-(piperidin-4-yl)morpholine to give the titled compound (242 mg, 74%)., 120737-78-2

The synthetic route of 120737-78-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; AbbVie Inc.; Bogdan, Andrew; Cowart, Marlon D.; DeGoey, David A.; Jinkerson, Tammie K.; Koenig, John R.; Kort, Michael E.; Liu, Bo; Matulenko, Mark A.; Nelson, Derek W.; Patel, Meena V.; Peltier, Hillary; Scanio, Marc J.; Wakefield, Brian D.; US2015/218102; (2015); A1;,
Piperazine – Wikipedia
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.694499-26-8,4-((4-Methylpiperazin-1-yl)methyl)-3-(trifluoromethyl)aniline,as a common compound, the synthetic route is as follows.

694499-26-8, j00607j A solution of 3-Iodo4-rnethylbenzoyl chloride (6.98 g, 20.0 rnrnol), prepared from the reaction of 3.-iodoAme(hylbenzoic acid and oxalyl chloride, was charged to a solution of 4-((4-niethylpiperazin- I -yl) rnethyl)-3 -(trifluoromethyl) aniline (6.80 g, 20.0 mmol), N, N-diisopropylettyiamine (3.86 g, 29,0 rnmol), and a catalytic amount of DMAP in THF (75 rnL).The reaction mixture was stirred at room temperature for 4 h, then diluted with water (20 rnL) and extracted with EtOAc (3 X 50 rnL). The combined organic layers were dried over anhydrous Na2504, filtered and concentrated in vacuo resulting in a crude compound which purified by chromatography on silica gel, eluting with 5% methanol in DCM and niethano] presaturated with ammonia gas to give 9.6 g, 74% yield of the title compound as an offwhite solid. ?H NMR (400 MHz, CDC13): oe = 8.28 (d, J= 1.9 Hz, 1H), 7.70 – 7.89 (m, 5H), 7.34 (d, J= 7.9 Hz, 1H), 3.63 (d, J= 1.8 Hz, 2H), 2.49 (s, 3H), 2.41(m, 8H) 2.29 (s, 3H). MS (ES): m/z= 518.22 [M+H] LCMS: tR = 2.33 mm.

As the paragraph descriping shows that 694499-26-8 is playing an increasingly important role.

Reference£º
Patent; COFERON, INC.; FOREMAN, Kenneth, W.; JIN, Meizhong; WANNER, Jutta; WERNER, Douglas, S.; WO2015/106292; (2015); A1;,
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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 solution of 1 ,1-dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate (1.5g, 7.5 mmol) in anhydrous DCM (3OmL) was added triethylamine (2.59ml_, 19 mmol) and 2,4-difluoro-1-isocyanatobenzene (0.88ml_, 7.5 mmol) the sample was stirred under an argon atmosphere at room temperature for 2hours. The reaction was evaporated and the residue was suspended DCM (3OmL) which was washed with 0.5M aqueous HCI (10OmL), and then water (10OmL). The collected organic layer was dried (MgSO4), filtered and evaporated, the residue was dried in a vac-oven at 400C overnight (approx 18hours) to yield the title compound as a white solid (2.41 g, 91%).1H NMR (CDCI3) 51.22 (3H, d, J=6.58Hz), 1.48 (9H, s), 3.11 (1 H, m), 3.22 (1 H, m), 3.34 (1 H, dd, J=13.37, 3.95Hz), 3.71 (1 H, m), 3.92 (1 H, m), 4.31 (1 H, br m), 6.39 (1 H, NH, br m), 6.85 (2H, m), 7.99 (1 H, m)., 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; GLAXO GROUP LIMITED; BESWICK, Paul, John; CAMPBELL, Alister; CRIDLAND, Andrew; GLEAVE, Robert, James; PAGE, Lee, William; WO2010/102663; (2010); A1;,
Piperazine – Wikipedia
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.208167-83-3,tert-Butyl 4-(2-chloroethyl)piperazine-1-carboxylate,as a common compound, the synthetic route is as follows.

A suspension of IX-214 (30 mg; 0.065 mmol; Example 1), potassium carbonate (9 mg; 0.065 mmol) and potassium iodide (2 mg; 0.012 mmol) in ethanol (1 mL) was stirred 5 min at room temperature, was supplemented with /-butyl 4-(2-chloroethyl)piperazine-l-carboxylate (24.3 mg; 0.098 mmol; Acros Organics), and was stirred 6 h at 80C. The reaction mixture was evaporated, re-dissolved in 10 mL water, and extracted with dichloromethane (3 x 10 mL). The pooled extracts were dried over anhydrous sodium sulfate, filtered, and evaporated, and the product was purified by silica chromatography (methanol/di chloromethane gradient).Yield: 34.4 mg; 79%., 208167-83-3

The synthetic route of 208167-83-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY; EBRIGHT, Richard H.; EBRIGHT, Yon W.; LIN, Chih-Tsung; (85 pag.)WO2019/226915; (2019); A1;,
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76003-29-7,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.76003-29-7,1-Boc-3-Oxopiperazine,as a common compound, the synthetic route is as follows.

A 60% dispersion of sodium hydride in mineral oil (3.6 g, 150 mmol, 1.5 equiv) was added in portions to a solution of tert- butyl 3-oxopiperazine-l-carboxylate (20.02 g, 100 mmol, 1 equiv) in anhydrous THF (400 mL) at 5 C and the mixture was stirred at room temperature for 1.5 hours. Benzyl bromide (14.27 mL, 120 mmol, 1.2 equiv) was added and the mixture was stirred at room temperature for 15 hours. Water (100 mL) was carefully added to quench the reaction and the mixture was extracted with ethyl acetate (3 x 200 mL). The combined organic layers were washed with saturated brine (200 mL), dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue was triturated with heptanes (200 mL) to give tert-butyl 4-benzyl-3-oxopiperazine-l- carboxylate (23.5 g, 81% yield) as a white solid.

The synthetic route of 76003-29-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CONATUS PHARMACEUTICALS, INC.; SPADA, Alfred, P.; TERNANSKY, Robert, J.; (0 pag.)WO2020/6341; (2020); A1;,
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Piperazines – an overview | ScienceDirect Topics

163765-44-4, (R)-1-Boc-3-Methylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Intermediate 34: (2R)-2-methyl-1-(methylsulfonyl)piperazine hydrochloride; To a solution of 1 , 1-dimethylethyl (3R)-3-methyl-1-piperazinecarboxylate(commercially available, for example from Sigma Aldrich, St Louis, USA, 1 .18 g, 4.98 mmol) in NaOH (2 M aqueous) (6.23 ml, 12.5 mmol) and THF (10 ml) at rt was added mesyl chloride (0.408 ml, 5.23 mmol) over 30 seconds. The solution was stirredvigorously at rt for 2 hours. Additional mesyl chloride (0.408 ml, 5.23 mmol) wasadded and the reaction was stirred vigorously at rt for 2 hours. Additional mesyl chloride (0.408 ml, 5.23 mmol) was added and the solution stirred vigorously at rt for 18 hours. The reaction was diluted with ethyl acetate (50 ml), then washed with 2M aqueous HCI (2 x 25 ml), brine (25 ml), dried (MgS04), filtered and concentrated under vacuum to leave a clear oil (900 mg) that became a crystalline white solid on standing overnight. This was redissolved in DCM (5.0 ml), then TFA (1.24 ml, 16.2 mmol) was added and the solution heated at reflux for 2 hours. The solution was cooled to rt, and concentrated under vacuum to leave a pale orange paste. This was re-dissolved in methanol (10 ml) and applied to an SCX-2 cartridge (25 g), washing with MeOH (50 ml). The product was eluted with 2M NH3 in MeOH (50 ml) and the solvent removed under vacuum to leave a viscous clear oil (361 mg). This was re- dissolved in methanol (10 ml) and aqueous HCI (2 M, 2.0 ml, 4.00 mmol) added. Concentration under vacuum, followed by azeotroping with toluene (2 x 25 ml) left a white solid, (2R)-2-methyl-1 -(methylsulfonyl)piperazine hydrochloride (412 mg).1H NMR (400 MHz, DMSO-d6) delta ppm 1 .35 (d, J=7.0 Hz, 3 H), 2 91 (m, 1 H), 3.04 (s, 3 H), 3.06 – 3.21 (m, 3 H), 3.33 (ddd, J=14.5, 12.1 , 2.9 Hz, 1 H), 3.61 (d, J=14. 5 Hz, 1 H), 4.13 (m, 1 H), 9.26 (br s, 1 H), 9.83 (br s, 1 H).

163765-44-4, 163765-44-4 (R)-1-Boc-3-Methylpiperazine 2756811, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; CONVERGENCE PHARMACEUTICALS LIMITED; BESWICK, Paul John; GLEAVE, Robert James; HACHISU, Shuji; VILE, Sadie; BERTHELEME, Nicolas; WARD, Simon E; WO2012/4604; (2012); A1;,
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Piperazines – an overview | ScienceDirect Topics

163765-44-4, (R)-1-Boc-3-Methylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 2: (R)-tert-Butyl 3-methyl-4-(3-(methylcarbamoyl)pyridin-2-yl)piperazine-1-carboxylate At rt, to a solution of 2-chloro-N-methyl-pyridine-3-carboxamide (300.00 mg, 1.76 mmol) in DMF (8.00 mL) was added (R)-tert-butyl 3-methylpiperazine-1-carboxylate (1.06 g, 5.28 mmol) and K2CO3 (729.75 mg, 5.28 mmol). The reaction mixture was stirred at 130 C. for 4 h under microwave. Then cooled to rt and diluted with H2O (100 mL), extracted with EtOAc (60 mL*3), the combined organic layer was washed with brine, dried (Na2SO4), filtered, concentrated and purified by chromatography (silica, ethyl acetate/petroleum ether=1/5) to afford (R)-tert-butyl 3-methyl-4-(3-(methylcarbamoyl)pyridin-2-yl)piperazine-1-carboxylate (450.00 mg, 1.35 mmol, 76.70% yield) as solid. ESI-MS (EI+, m/z): 335.0 [M+H]+, 163765-44-4

As the paragraph descriping shows that 163765-44-4 is playing an increasingly important role.

Reference£º
Patent; Navitor Pharmaceuticals, Inc.; O’Neill, David John; Saiah, Eddine; Kang, Seong Woo Anthony; Brearley, Andrew; Bentley, Jonathan; (519 pag.)US2018/127370; (2018); 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.70261-82-4,4-(4-Methylpiperazin-1-ylmethyl)phenylamine,as a common compound, the synthetic route is as follows.

70261-82-4, To Example 55D (75 mg, 0.198 mmol) and m-chloroperoxybenzoic acid (53.3 mg, 0.238 mmol) was added 2 mL dichlormethane. The reaction was stirred for 15 minutes when 4-((4-methylpiperazin-1-yl)methyl)aniline (48.9 mg, 0.238 mmol) followed by trifluoroacetic acid (0.031 ml, 0.397 mmol). The mixture was stirred at 50 C. for 1 hour, and at room temperature overnight. The mixture was diluted with ethyl acetate, washed with saturated aqueous NaHCO3, water, and brine, dried over MgSO4, filtered and concentrated. The crude material was dissolved in methanol, and treated with 2N HCl in diethyl ether for 1 hour. The mixture was diluted with diethyl ether and filtered. The solid was triturated with 1:1 DMSO/methanol solution, diluted with ethyl acetate, filtered, and dried over high-vacuum to provide the title compound. 1H NMR (501 MHz, DMSO-d6) delta 2.53 (s, 2H) 2.78 (s, 2H) 3.15 (s, 3H) 3.19-3.50 (m, 4H) 3.91 (s, 2H) 7.09 (d, J=1.18 Hz, 1H) 7.47 (d, J=7.58 Hz, 2H) 7.55-7.64 (m, 1H) 7.66-7.74 (m, 2H) 7.80 (d, J=1.66 Hz, 1H) 7.86 (d, J=8.06 Hz, 2H) 9.16 (s, 1H). MS (ESI+) m/z 534.9 (M+H)+.

70261-82-4 4-(4-Methylpiperazin-1-ylmethyl)phenylamine 3153996, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; ABBOTT LABORATORIES; US2012/220572; (2012); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

106261-48-7, 4-((4-Methylpiperazin-1-yl)methyl)benzoic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Method E; To a flask was added 4-((4-methylpiperazin-1-yl)methyl)benzoic acid (3.2 g), dicyclohexylcarbodiimide (3.0 g), N-(5-amino-2-methylpyridin-3-yl)-4-(3-pyridyl)pyrimidin-2-amine (3.0 g) and CH2Cl2 (100 mL) and the reaction mixture was stirred at room temperature overnight. The reaction mixture was filtrated and the filtrate was washed with water (100 mL ¡Á 2), dried, filtrated, concentrated, and purified through column chromatography to give 4-[(4-methylpiperazin-1-yl)methyl]-N-{6-methyl-5-[(4-(pyrid-3-yl)pyrimid-2-yl)amino]pyrid-3-yl}benzamide (4.0 g).

106261-48-7, The synthetic route of 106261-48-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Sun, Piaoyang; EP1840122; (2007); A1;,
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31166-44-6, 1-Cbz-Piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of benzyl piperazine-1 -carboxylate (500.00 mg, 2.27 mmol) in 1 ,4-Dioxane (30.00 mL) were added 37percent HCHO (77.32 mg, 2.27 mmol) and 1-ethoxyphosphonoyloxyethane (2.27 mmol). Thereaction mixture was stirred at r.t. for 30 mm and then heated at 90-100 00 for 1 h. The mixture was poured into water (100 mL) and extracted with EtOAc (100 mLx3). The combined organic phases were washed with brine (1 00 mL), dried over anhydrous Mg504 and concentrated. The residue was purified by flash column chromatography on silica gel (Petroleum Ether:EtOAc = 1:1) to afford 4.2 (700.00 mg, 1 .89 mmol, 83percent yield). MS (ESI) m/z = 371 [M¡ÂH]. 1H NMR (400 M, ODd3), oe 7.377.32 (m, 5H), 5.13 (s,2H), 4.21 4.1 1 (m, 4H), 3.55 (s, 4H), 2.82 (d, 2H, J = 116 Hz), 2.65 (m, 4H), 1.35 (m, 6H).

31166-44-6, As the paragraph descriping shows that 31166-44-6 is playing an increasingly important role.

Reference£º
Patent; UNITY BIOTECHNOLOGY, INC.; BACKES, Bradley; W. VON GELDERN, Thomas; CHEN, Bing; (121 pag.)WO2017/101851; (2017); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics