Tag: M.W:100-200

5271-27-2, 1-Methyl-3-phenylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

5271-27-2, -Methyl-3-phenylpiperazine (17.6 g; 0.1 mol) was dissolved in 100 dichloromethane. Triethylamine (15 ml; 0.1 mol) was added. A solution of propionyl chloride (10 g; 0.11 mol) in dichloromethane was slowly added under cooling. After the total addition a wh

As the paragraph descriping shows that 5271-27-2 is playing an increasingly important role.

Reference£º
Patent; N.V. ORGANON; WO2007/144409; (2007); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.934-98-5,2-(4-Methylpiperazin-1-yl)ethanamine,as a common compound, the synthetic route is as follows.,934-98-5

c) 4-r (4-MethoXvphenyl) amino1-N-r2-(4-methvlpiperazin-1-vl) ethyl1benz- amide; 97.3 mg (0.4 mmol) of the compound prepared in Example 6b are added to a suspension of 400 mg of commercial triphenylphosphine on polymer (3 mmol/g) in 1.1 ml of dichloromethane, followed by addition of 0.048 ml (0.48 mmol) of tri- chloroacetonitrile. After stirring for 3 hours at room temperature, the reaction medium is filtered and the filtrate is poured into a suspension of 329.7 mg of commercial N-methylmorpholine on polymer (3.64 mmol/g) and 62.9 mg (0. 4 mmol) of 2- (4-methylpiperazin-1-yl) ethylamine in 2.2 ml of THF. The new suspension is stirred for 16 hours at room temperature and then filtered. The fil- trate is concentrated under vacuum to give 110 mg of solid. (Yield: 74.6percent). NMR (CDCl3) : 1.8 (2H, m); 2.25 (3H, s); 2.4-2. 8 (8H, m); 3.5 (2H, m); 3.8 (3H, s); 5.8 (1 H, s); 6.8 (4H, m); 7.05 (2H, m); 7.5-7. 7 (3H, m).

934-98-5 2-(4-Methylpiperazin-1-yl)ethanamine 70284, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; MERCK PATENT GMBH; WO2003/76406; (2003); A1;,
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103-76-4, N-(2-Hydroxyethyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

tert-butyl 4-(2-hydroxyethyl)piperazine-1-carboxylate (57): To 1-(2-hydroxyethyl)piperazine (3.0 g, 23.0 mmol) in THF was added di-tert-butyl dicarbonate (5.5 g, 25.3 mmol). The mixture was stirred for 2 hours. The solvent was evaporated under vacuum to half the initial volume and the mixture was poured in water, extracted with CH2Cl2, washed with brine, dried over Na2SO4 and concentrated to give a pale yellow oil (5.3 g, quant.). 1H NMR (400 MHz, CDCl3) delta1.46 (s, 9H), 2.44-2.46 (m, 4H), 2.54-2.57 (m, 2H), 2.66 (m, J=5.3, 1H), 3.42-3.45 (m, 4H), 3.62 (q, J=5.3, 2H)., 103-76-4

As the paragraph descriping shows that 103-76-4 is playing an increasingly important role.

Reference£º
Patent; TARGANTA THERAPEUTICS, INC.; US2011/263534; (2011); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.13754-38-6,1-Benzoylpiperazine,as a common compound, the synthetic route is as follows.

General procedure: A solution of 2-chloroalkyl/aryl substitutedwith or without N-substitution as well as with or without 5 and/or 6-substituted benzimidazole derivative (1.75g,0.01051mol) and 1-[(4-phenyl)carbonyl]piperazine (3g,0.0105mol) in N, N dimethylformamide was taken in a RBF.K2CO3(2gm,) was added to the reaction mixture. The reaction mixture was stirred for 8h at 80C on a magnetic stirrer (heat + stirring). The progress of the reaction was monitored by thin layer chromatography (TLC).Upon completion of the reaction, water was added to the reaction mixture and the product extracted by shaking the reaction mixture with dichloromethane in a separating funnel.The dichloromethane layer was washed successively with water and brine, dried over anhydrous sodium sulfate. Evaporation of the solvent gave theproduct. 11a-l Recrystallized with various solvent like chloroform, ethanol, methanol.

13754-38-6, 13754-38-6 1-Benzoylpiperazine 762654, apiperazines compound, is more and more widely used in various fields.

Reference£º
Article; Kankate, Rani S.; Gide, Parag S.; Belsare, Deepak P.; Oriental Journal of Chemistry; vol. 30; 4; (2014); p. 1855 – 1863;,
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5308-25-8,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5308-25-8,1-Ethylpiperazine,as a common compound, the synthetic route is as follows.

A mixture of 2 g (13 mmol) 2-chloro-5-nitro-pyridine and 0.76 g (6 mmol) N,N-diisopropylethylamine in 21 ml water and 4 ml DMF was heated to 80 C. During 2 min 1.73 g (15 mmol) N-ethylpiperazine was added and the mixture was kept for an additional hour at 80 C. The yellow precipitate was filtered off and washed three times with 4 ml water and dried for 16 h under vacuum to yield 2.48 g (83%) of the title compound as yellow crystals. (m/e): 237.1 (MH+; 100%).

As the paragraph descriping shows that 5308-25-8 is playing an increasingly important role.

Reference£º
Patent; Nettekoven, Matthias Heinrich; Roche, Olivier; Rodriguez-Sarmiento, Rosa Maria; US2006/122187; (2006); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5464-12-0,1-(2-Hydroxyethyl)-4-methylpiperazine,as a common compound, the synthetic route is as follows.

To a solution of Intermediate 13b (1.15 g, 5.0 mmol), 2-(4-methyl- piperazin-l -yl)-ethanol (864 mg, 6.0 mmol) and triphenylphosphine (2.62 g, 10.0 mmol) in THF (10 mL) was added diisopropyl azodicarboxylate (2.0 g, 10.0 mmol) dropwise and stirred for 75 min. The mixture was diluted with diethyl ether (50 mL) and extracted with 10percent aqueous citric acid soln (2 x). The combined aqueous layers were basified with solid potassium carbonate until pH = 9. The aqueous layer was then extracted with ethyl acetate (3 x). The combined ethyl acetate layers were washed with brine, dried (NaSO4) and evaporated in vacuo. Purification by FCC using 0- 12percent [9: 1 MeOH/880 ammonia] in DCM. The resulting product was crystallised (diethyl ether) to give the title compound (270 mg, 0.756 mmol, 15percent). LCMS (Method 1): Rt 2.31 , 1.72 min, m/z 358/359 [MH+].

5464-12-0, The synthetic route of 5464-12-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CHIESI FARMACEUTICI S.P.A.; VAN NIEL, Monique Bodil; RAY, Nicholas Charles; ALCARAZ, Lilian; PANCHAL, Terry Aaron; JENNINGS, Andrew Stephen Robert; ARMANI, Elisabetta; CRIDLAND, Andrew Peter; HURLEY, Cristopher; WO2013/83606; (2013); A1;,
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21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Intermediate 66: (3R*,5Si:)-3,5-Dimethyl-piperazin-l-yl)-(l-m-tolyl-lH-[l ,2,4]triazol-3-yl)- methanone A mixture of 610 mg (3.00 mmol) l-m-tolyl-lH-[l,2,4]triazole-3-carboxylic acid, 350 mg (3.00 mmol) cz’s-2,6-dimethyl-piperazine, 1.06 g (3.30 mmol) TBTU and 770 mu, (4.50 mmol) DIPEA in 5.0 mL DMF was stirred with at RT for 12 h. The reaction mixture was poured into ice water and extracted with EtOAc. The combined organic phases were washed with saturated NaHC03 solution, dried over sodium sulfate, filtered and concentrated in vacuo. Yield: 520 mg (58 percent) ESI-MS: m/z = 300 (M+H)+ Rt(HPLC): 0.80 min (method 8), 21655-48-1

As the paragraph descriping shows that 21655-48-1 is playing an increasingly important role.

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; HEIMANN, Annekatrin; DAHMANN, Georg; GRUNDL, Marc; MUELLER, Stephan Georg; WELLENZOHN, Bernd; WO2013/87805; (2013); A1;,
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109-01-3, 1-Methylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The 1-(3-hydroxypropyl)-4-methylpiperazine used as a starting material was prepared as follows: A mixture of 3-bromopropanol (20 ml), N-methylpiperazine (29 ml), potassium carbonate (83 g) and ethanol (200 ml) was stirred and heated to reflux for 20 hours. The mixture was cooled to ambient temperature and filtered. The filtrate was evaporated and the residue was triturated under diethyl ether. The resultant mixture was filtered and the filtrate was evaporated. The residue was purified by distillation to give the required starting material as an oil; NMR Spectrum: (CDCl3) 1.72 (m, 2H), 2.3 (s, 3H), 2.2-2.8 (m, 8H), 2.6 (t, 2H), 3.8 (t, 2H), 5.3 (br s, 1H)., 109-01-3

109-01-3 1-Methylpiperazine 53167, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Hennequin, Laurent Francois Andre; Crawley, Graham Charles; McKerrecher, Darren; Ple, Patrick; Poyser, Jeffrey Philip; Lambert, Christine Marie Paul; US2003/225111; (2003); A1;,
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59702-07-7, 1-Methylpiperazin-2-one is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of (8-((5-cyano-4-((2-methoxyethyl)amino)pyridin-2-yl)carbamoyl)-2-(dimethoxymethyl)-5,6 ,7 ,8-tetrahydro-1 ,8-naphthyridin-3-yl)methyl methanesu Ifonate (intermediate170, 368 mg, 0.657 mmol) in DCM (2.7 ml) at room temperature was added NEt3 (0.319 ml, 2.301mmol) followed by 1-methylpiperazin-2-one (120 mg, 1.052 mmol). The reaction mixture was stirred at room temperature for 2 h and partitioned between DCM and water. The water layer was extracted multiple times with DCM, the combined organic layers were dried using Na2504, filtered and evaporated. The crude product was purified by silica gel column chromatography usinggradient of MeOH (0-3percent) in DCM to yield the title compound as a white solid. (UPLC-MS 3) tR 0.87mm; ESl-MS 553.3 [M+H].1H NMR (600 MHz, CDCI3)5 13.75 (s, IH), 8.20 (s, IH), 7.64 (brs, IH),7.58 (s, I H), 5.56 (s, I H), 5.23 (d, I H), 4.06 ? 4.01 (m, 2H), 3.70 (br s, 2H), 3.63 (t, 2H), 3.503.42 (m, 8H), 3.40 (s, 3H), 3.31 (br s, 2H), 3.14 (br s, 2H), 2.96 (br s, 3H), 2.87 ?2.80 (m, 2H), 2.71(br s, 2H), 2.03 ? 1.96 (m, 2H)., 59702-07-7

59702-07-7 1-Methylpiperazin-2-one 4399042, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; NOVARTIS AG; BUSCHMANN, Nicole; FAIRHURST, Robin Alec; FURET, Pascal; KNOePFEL, Thomas; LEBLANC, Catherine; MAH, Robert; NIMSGERN, Pierre; RIPOCHE, Sebastien; LIAO, Lv; XIONG, Jing; ZHAO, Xianglin; HAN, Bo; WANG, Can; WO2015/59668; (2015); A1;,
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21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

[7261 Step 1: Synthesis of (3R.55?)- 1 -benzyl-3 .5-dimethvlpiperazine [7271 (2S,6R)-2,6-dimethylpiperazine (1.000 g, 8.757 mmol) and K2C03(1.724 g, 13.136 mmol) were dissolved in acetonitrile (5OmL), and benzylbromide (1.092 mL, 9.195 mmol) was added thereto at 0 ¡ãC, and the mixture was stuffed at the same temperature for 1 hour and 30 minutes. Water was added to the reaction mixture, followed by extraction with ethyl acetate. The organic layer was washed with a saturated aqueous solution of sodium chloride, dried with anhydrous magnesium sulfate, and then concentrated under reduced pressure. The concentrate was purified by column chromatography (silicon dioxide; methanol/methylene chloride = 5 percent) and concentrated to afford the desired compound (1.170 g, 65.4 percent) as a yellow oil., 21655-48-1

The synthetic route of 21655-48-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CHONG KUN DANG PHARMACEUTICAL CORP.; SONG, Hyeseung; LEE, Changgon; KWAK, Dalyong; LEE, Jaeyoung; BAE, Suyeal; KIM, Yuntae; BAE, Daekwon; HA, Nina; BAE, Miseon; KIM, Jihyun; WO2015/137750; (2015); A1;,
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