Category: 934-98-5

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

To Example 9P (8.8 g) in a mixture of anhydrous dichloromethane (100 mL) and acetic acid (20 mL) was added 2-(4-methylpiperazin-l-yl)ethanamine (3.16 g). The mixture was stirred at room temperature for 1 hour before sodium triacetoxyborohydride (7.02 g) was added. The reaction mixture was stirred at room temperature overnight. The volatiles were removed by rotary evaporation, and the residue was dissolved in tetrahydrofuran (45 mL) and water (7.5 mL). The mixture was cooled to 0 °C, and trifluoracetic acid (45 mL) was added. After the addition, the cooling bath was removed, and the mixture was stirred at room temperature for 4 hours. The mixture was diluted with ethyl acetate. The mixture was washed with a pre-cooled diluted sodium hydroxide mixture (contained about 60 mL of 50percent sodium hydroxide mixture, pH 10) and brine. The organic phase was concentrated. The intermediate was dissolved in anhydrous dichloromethane (100 mL). Anhydrous magnesium sulfate (25 g) was added. The mixture was stirred at room temperature overnight, and sodium triacetoxyborohydride (7.02 g) was added. The reaction mixture was stirred at room temperature for 4 hours. The material was filtered off, and the filtrate was directly purified by silica gel chromatography (0-20percent methanol containing 3percent ammonium hydroxide in dichloromethane) to provide the title compound. MS (ESI) m/z 850 (M+H)+.

As the paragraph descriping shows that 934-98-5 is playing an increasingly important role.

Reference：
Patent; ABBVIE INC.; ABBVIE DEUTSCHLAND GMBH & CO. KG; BRAJE, Wilfried; DOHERTY, George; JANTOS, Katja; JI, Cheng; JUDD, Andrew; KUNZER, Aaron; MASTRACCHIO, Anthony; SONG, Xiaohong; SOUERS, Andrew; SULLIVAN, Gerard; TAO, Zhi-Fu; LAI, Chunqui; KLING, Andreas; POHLKI, Frauke; TESKE, Jessc; WENDT, Michael; BRADY, Patrick; WANG, Xilu; PENNING, Thomas; MICHAELIDES, Michael; (448 pag.)WO2019/35927; (2019); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

934-98-5, 2-(4-Methylpiperazin-1-yl)ethanamine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The chloropteridine from above was dissolved in n-butanol (50 mL) and N-methyl- N’-(2-aminoethyl)piperazine (2.0 gm, 1.4 X 10″2 moles) was added. This mixture was heated at 110°C. for 30 minutes. TLC (silica, 25percent methanol in methylene chloride) showed a single, blue fluorescent, product at Rf = 0.093. The n-butanol was removed under reduced pressure and the residual material was extracted by stirring in diethyl ether (50 mL). This mixture was filtered and the solid filtercake was washed with diethyl ether (100 mL). The combined filtrates were extracted with water (50 mL). These aqueous extracts were treated with potassium carbonate to precipitate the product as an oil. The product was extracted into methylene chloride (100 mL). After drying over magnesium sulfate the methylene chloride solution was filtered and evaporated under reduced pressure. The remaining solid (1.28 gm) was dissolved in methanol (40 mL) and the solution was heated to reflux. Concentrated hydrochloric acid (982mu) was added and the solution was cooled on ice. The hydrochloride salt of Example 57 crystallized and was isolated by filtration. After being washed with methanol followed by diethyl ether, the solid was dried to give the product as its hydrochloride salt in a yield of 950 mg. LC/MS: M+l = 448.45, 934-98-5

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

Reference：
Patent; JANUS BIOTHERAPEUTICS, INC.; LIPFORD, Grayson, B.; ZEPP, Charles, M.; WO2012/167046; (2012); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

934-98-5, 2-(4-Methylpiperazin-1-yl)ethanamine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

934-98-5, To a solution of?(S)-7?(2.00 g, 7.0 mmol) in DCM (60 mL), DEPBT (2.01 g, 7.0 mmol) and DIPEA (2.44 mL, 14.0 mmol) were added and reaction mixture was stirred at room temperature for 5 min. 2-(4-Methyl-piperazin-1-yl)ethylamine?8b?(1.00 g, 7.0 mmol) was added to the reaction mixture and it was stirred at room temperature for 18 H. Mixture was quenched with H2O (60 mL) and organic layer was washed with brine (2×60 mL), dried over Na2SO4?filtered and evaporated. The residue was purified by flash column chromatography eluting with?DCM : MeOH (95 : 5) to afford 1.91 g of the titled compound?9b?as a white solid (66 percent):?mp 154-155 °C;??[alpha]D20+ 49.7 (c?1, MeOH);?deltaH?(400 MHz; CDCl3) 7.34-7.24 (10H, m), 6.27-6.25 (2H, m), 5.15-4.97 (3H, m), 3.24 (2H, q,?J?= 5.5 Hz), 2.40-2.29 (10H, m), 2.21 (3H, s);?13C NMR (300 MHz; CDCl3) 170.3, 139.4, 137.1, 129.9, 129.3, 129.2, 129.0, 128.9, 128.0, 67.8, 59.7, 56.5, 55.8, 53.4, 46.9, 37.0;?HR-MS [M + H]+?observed = 411.2410, calculated = 411.2391.

As the paragraph descriping shows that 934-98-5 is playing an increasingly important role.

Reference：
Article; Hanessian, Stephen; Babonneau, Vincent; Boyer, Nicolas; Mannoury La Cour, Clotilde; Millan, Mark J.; De Nanteuil, Guillaume; Bioorganic and Medicinal Chemistry Letters; vol. 24; 2; (2014); p. 510 – 514;,
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.934-98-5,2-(4-Methylpiperazin-1-yl)ethanamine,as a common compound, the synthetic route is as follows.

General procedure: To a stirring solution of compound 8 (200mg, 0.35mmol) in DCM (10mL) was added EDCI (91mg, 0.47mmol), HOBt (64mg, 0.47mmol) and the corresponding diamine derivatives (0.35mmol) with a drop of DIPEA. The reaction mixture was stirred for 12hat room temperature, then washed with diluted HCl and saturated brines. The organic layer were combined and dried over anhydrous Na2SO4, concentrated in vacuo, and then purified by flash chromatography to give product 9b-9h, 9k-9x, respectively.

934-98-5, As the paragraph descriping shows that 934-98-5 is playing an increasingly important role.

Reference：
Article; Xu, Xiao-li; Yang, Ying-rui; Mo, Xiao-fei; Wei, Jin-lian; Zhang, Xiao-jin; You, Qi-dong; European Journal of Medicinal Chemistry; vol. 137; (2017); p. 45 – 62;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

934-98-5, 2-(4-Methylpiperazin-1-yl)ethanamine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

N4-(5-Isopropyl-1H-pyrazol-3-yl)-N6-[2-(4-methylpiperazin-1-yl)ethyl]-N2-(3-phenylisoxazol-5-ylmethyl)-pyrimidine-2,4,6-triamine. A mixture of 6-chloro-N4-(5-isopropyl-1H-pyrazol-3-yl)-N2-(3-phenylisoxazol-5-ylmethyl)-pyrimidine-2,4-diamine (250 mg, 0.611 mmol) and 2-(4-methylpiperazin-1-yl)-ethylamine (500 mg, 3.50 mmol) in 1-butanol (2 mL) was heated to 180° C. in a 50 mL sealed tube. The mixture was heated for 1 h, then cooled to room temperature and diluted with methanol (10 mL). The mixture thus obtained was purified via preparative reverse phase HPLC to give the desired product (93 mg, 29percent) as a white solid. 1H-NMR (400 MHz, d6-CDCl3): delta 7.8 (m, 2H), 7.4 (m, 3H), 6.5 (s, 1H), 5.9 (s, 1H), 5.2 (s, 1H), 4.8 (m, 2H), 3.5 (br s, 2H), 2.8 (m, 1H), 2.5 (m, 10H), 2.4 (s, 3H), 1.2 (m, 6H); MS (EI) for C27H36N10O: 517.3 (MH+)., 934-98-5

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

Reference：
Patent; EXELIXIS, INC.; US2009/232828; (2009); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

934-98-5, 2-(4-Methylpiperazin-1-yl)ethanamine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

N4-(5-Isopropyl-1H-pyrazol-3-yl)-N6-[2-(4-methylpiperazin-1-yl)ethyl]-N2-(3-phenylisoxazol-5-ylmethyl)-pyrimidine-2,4,6-triamine. A mixture of 6-chloro-N4-(5-isopropyl-1H-pyrazol-3-yl)-N2-(3-phenylisoxazol-5-ylmethyl)-pyrimidine-2,4-diamine (250 mg, 0.611 mmol) and 2-(4-methylpiperazin-1-yl)-ethylamine (500 mg, 3.50 mmol) in 1-butanol (2 mL) was heated to 180° C. in a 50 mL sealed tube. The mixture was heated for 1 h, then cooled to room temperature and diluted with methanol (10 mL). The mixture thus obtained was purified via preparative reverse phase HPLC to give the desired product (93 mg, 29percent) as a white solid. 1H-NMR (400 MHz, d6-CDCl3): delta 7.8 (m, 2H), 7.4 (m, 3H), 6.5 (s, 1H), 5.9 (s, 1H), 5.2 (s, 1H), 4.8 (m, 2H), 3.5 (br s, 2H), 2.8 (m, 1H), 2.5 (m, 10H), 2.4 (s, 3H), 1.2 (m, 6H); MS (EI) for C27H36N10O: 517.3 (MH+)., 934-98-5

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

Reference：
Patent; EXELIXIS, INC.; US2009/232828; (2009); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

934-98-5, 2-(4-Methylpiperazin-1-yl)ethanamine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,934-98-5

A mixture of (S)-isopropyl 2-(tert-butoxy)-2-(4-(4,4-dimethylpiperidin-1-yl)-S -(4-(4-fluorophenethoxy)phenyl)-2-methyl-6-(((trifluoromethyl)sulfonyl)oxy)pyridin-3 -yl)acetate (0.02 g, 0.027 mmol) and 2-(4-methylpiperazin-1-yl)ethanamine (0.0 16 g,0.108 mmol) in NMP (1 mL) was heated at 180 °C for 2 h. Ethanol (0.5 mL) and 5 MNaOH (0.054 mL, 0.271 mmol) were added and the mixture was heated at 80 °C for 4.5cooled to ambient temperature, and filtered. The cmde mixture was purified viapreparative HPLC to afford the desired product (11.8 mg, 62percent). LCMS (M+1) = 690.2.

The synthetic route of 934-98-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; VIIV HEALTHCARE UK (NO.5) LIMITED; BELEMA, Makonen; BOWSHER, Michael S.; DESKUS, Jeffrey A; EASTMAN, Kyle J.; GILLIS, Eric P; FRENNESSON, David B; IWUAGWU, Christiana; KADOW, John F.; NAIDU, B. Narasimhulu; PARCELLA, Kyle E.; PEESE, Kevin M; SAULNIER, Mark G; SIVAPRAKASAM, Prasanna; (463 pag.)WO2018/127800; (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.934-98-5,2-(4-Methylpiperazin-1-yl)ethanamine,as a common compound, the synthetic route is as follows.

934-98-5, General method F; A mixture of the appropriate sulfinyl derivative such as Intermediate 39 described hereinbefore (ex:2-methanesulfinyl-5-(3-trifluoromethoxy-phenyl)-imidazo[2, 1 – b][1 ,3,4]thiadiazole) (1 equiv), the appropriate amine (1.5 equiv) (ex: 2-(4-methyl- piperazin-1 -yl)-ethylamine) and Et3N (2 equiv) (0.092 mL, 0.662 mmol) in isopropanol (15 mL/mmol) was heated in a sealed tube at 110 ¡ãC for 40 h. On cooling, DCM was added and the mixture was washed with water. The organic layer was dried (sodium sulfate), filtered and concentrated. The residue was purified by column chromatography (Isolute/Flash, Sill, 0percent to 20percent MeOH in DCM) to give the desired product (ex: [2-(4-methyl-piperazin-1 -yl)-ethyl]-[5-(3- trifluoromethoxy-phenyl)-imidazo[2,1-b][1 ,3,4]thiadiazol-2-yl]-amine).; Example 47; [2-(4- ethyl-piperazin-1-yl)-ethyl]-[5-(3-trifluoromethoxy-phenyl)- imidazo[2,1-b][1,3,4]t iadiazol-2-yl]-amine; HPLC-MS (method 1): Rt= 3.15 min, [M+1]+ m/z 427.2.1H NMR (300 MHz, MeOD) delta 7.99 (s, 1 H), 7.85 (d, J = 8.0 Hz, 1 H), 7.48 (s, 1 H), 7.46 (t, J = 8.1 Hz, 1 H), 7.15 (d, J = 8.2 Hz, 1 H), 3.57 (t, J = 6.5 Hz, 2H), 2.69 (t, J = 6.5 Hz, 2H), 2.60 (m, 4H), 2.50 (m, 4H), 2.27 (s, 3H).Yield: 48percent

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

Reference£º
Patent; CENTRO NACIONAL DE INVESTIGACIONES ONCOLOGICAS (CNIO); PASTOR FERNANDEZ, Joaquin; GARCIA COLLAZO, Ana, Maria; NOYA MARINO, Beatriz; GONZALEZ CANTALAPIEDRA, Esther; WO2012/20217; (2012); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

934-98-5, 2-(4-Methylpiperazin-1-yl)ethanamine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

934-98-5, General procedure: At room temperature, to a red solution of compound 2 (150 mg,0.5 mmol) and triethylamine (0.14 mL, 1.0 mmol) in chloroform(40 mL), thionyl chloride (2.5 mL) was added dropwise. Themixture was stirred and heated under reflux for 5 h. The mixturegradually became a red solution. The reaction solution was then cooled to room temperature. The solvent was evaporated underreduced pressure. The residue was obtained under reduced pressurefor a period to get rid of most of the residual SOCl2 to give an orange solid residue. 4-(Dimethylamino)pyridine (70 mg,0.6 mmol) and different amine or alcohol derivative (1.80 mmol) inchloroform (30 mL) were added dropwise to the resultant residue.The reaction mixture instantaneously became a red solution. Thereaction mixture was heated under reflux for 5 h, and cooled toroom temperature. The solvent was evaporated under reducedpressure. The crude product was purified by silica gel columnchromatography to give the target compound.

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

Reference£º
Article; Yu, Le-Mao; Zhang, Xiao-Ru; Li, Xiao-Bing; Yang, Yuan; Wei, Hong-Yu; He, Xi-Xin; Gu, Lian-Quan; Huang, Zhi-Shu; Pommier, Yves; An, Lin-Kun; European Journal of Medicinal Chemistry; vol. 101; (2015); p. 525 – 533;,
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.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;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics