Category: 21655-48-1

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

(Formula 12-7: methyl 4-(((3S,5R)-3,5-dimethyl-N-(3-(trifluoromethyl)phenyl)piperazine-1-carboxamido)methyl)benzoate)[1793][1794]Compound ofFormula 1-3(methyl 4-((((4-nitrophenoxy)carbonyl)(3-(trifluoromethyl)phenyl)amino)methyl)benzoate; 1.263 g, 2.662 mmol), (2S,6R)-2,6-dimethylpiperazine (1.520 g, 13.309 mmol) and potassium carbonate (0.736 g, 5.323 mmol) were dissolved in N,N-dimethylformamide (5 mL) at 40 °C and stirred at the same temperature for 16 hours. Then, the temperature was lowered to room temperature, and the reaction was completed. Then, water was poured into the reaction mixture, and the organic layer was extracted with ethyl acetate. Then, the organic layer was washed with saturated sodium chloride aqueous solution, dehydrated with anhydrous magnesium sulfate, filtered, and then concentrated under reduced pressure. The concentrate was purified and concentrated by column chromatography (silica; ethyl acetate/hexane=20-50percent) to give the desired compound ofFormula 12-7(0.726 g, 60.7percent) in the form of a yellow liquid.

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

Reference：
Patent; CHONG KUN DANG PHARMACEUTICAL CORP.; LEE, Changsik; YANG, Hyun-Mo; CHOI, Hojin; KIM, Dohoon; KIM, Soyoung; HA, Nina; LIM, Hyojin; KO, Eunhee; YOON, Seongae; BAE, Daekwon; WO2014/178606; (2014); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

21655-48-1, EXAMPLE 24 Cis-3,5-dimethyl-1-(4-nitro-phenyl)-piperazine A suspension of 6.74 g (47.8 mmol) of 4-fluoro-nitro-benzene and 10.91 g (95.5 mmol) of cis-2,6-dimethyl-piperazine is heated at 45° C. for 1 hour. The reaction mixture is cooled and shaken with dichloromethane and water. The organic layer is dried (magnesium sulfate) and concentrated to give 11.62 g (>100percent) of the product as a solid.

21655-48-1 cis-2,6-Dimethylpiperazine 6950261, apiperazines compound, is more and more widely used in various fields.

Reference：
Patent; Booth, Richard John; Dobrusin, Ellen Myra; Josyula, Vara Prasad Venkata Nagendra; McNamara, Dennis Joseph; Toogood, Peter Laurence; US2003/73668; (2003); 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.21655-48-1,cis-2,6-Dimethylpiperazine,as a common compound, the synthetic route is as follows.

General procedure: A solution of intermediate4a or 4b (1mmol), corresponding aliphatic amine (2mmol), K2CO3 (2mmol) in DMF was stirred at room temperature overnight. DMF was removed in vacuo and then H2O was added. The layer was extracted with CH2Cl2 (15mL×3). Organic layers were dried on Na2SO4 and the solvent was removed under pressure. Compounds were purified by column chromatography using dichloromethane/methanol as an eluent to give 5a-11a and 12b-21b.

21655-48-1, 21655-48-1 cis-2,6-Dimethylpiperazine 6950261, apiperazines compound, is more and more widely used in various fields.

Reference：
Article; Wang, Yu; Chen, Shaowei; Hu, Gang; Wang, Jiao; Gou, Wenfeng; Zuo, Daiying; Gu, Yucheng; Gong, Ping; Zhai, Xin; European Journal of Medicinal Chemistry; vol. 143; (2018); p. 123 – 136;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

21655-48-1, (2S,6R)-2,6-dimethylpiperazine (6.85 g, 60.00 mmol) was added to ethyl 4-fluorobenzoate (2.201 mL, 15 mmol), in DMSO (40 mL) warmed to 120 C. under nitrogen. The resulting solution was stirred at 120 C. for 20 h. The reaction mixture was cooled and the solvent evaporated. The crude product was purified by silica column chromatography, eluting with a gradient of 0 to 10% methanol in dichloromethane containing 1% 880 ammonia. Pure fractions were evaporated to dryness to afford the desired compound (2.83 g, 71.9%) as a brown oil. 1H NMR (399.9 MHz, CDCl3) delta 1.15 (6H, d), 1.37 (3H, t), 2.38 (1H, d), 2.41 (1H, d), 2.96-3.04 (2H, m), 3.65-3.69 (2H, m), 4.33 (2H, q), 6.84-6.87 (2H, m), 7.89-7.93 (2H, m). MS: m/z 263 (MH+).

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

Reference：
Patent; ASTRAZENECA AB; US2008/153812; (2008); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Add cis-2,6-dimethylpiperazine (1.0 g, 8.76 mmol) to a 100 mL single-mouth bottleAnd dichloromethane(20mL),Cool down to 0-5 C.Add triethylamine (2.22 g, 21.89 mmol),A solution of (Boc) 2O (1.92 g, 8.76 mmol) in dichloromethane (10 mL) was added dropwise.Warm to room temperature and stir overnight. The reaction was monitored by TLC. After the reaction was completed, the reaction mixture was concentrated under reduced pressure and purified by column chromatography.Eluent: DCM/MeOH = 30/1,The collected product was concentrated under reduced pressure to give 1.9 g.

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

Reference：
Patent; Beijing Purunao Bio-technology Co., Ltd.; Zhang Peilong; Shi Hepeng; Lan Wenli; Song Zhitao; (250 pag.)CN108707139; (2018); A;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

cis-3,5-Dimethyl-1-(4-trifluoromethoxy-benzyl)-piperazine: To a solution of 4-(trifluoromethoxy)-benzaldehyde (776 uL, 4.38 mmol) in methylene chloride (30 mL) was added cis-2,6-dimethyl piperazine (1.0 g, 8.77 mmol). After 1 hour sodium triacetoxy borohydride (2.45 g, 8.77 mmol) was added to the mixture. The solution was stirred at room temperature for an additional 4 hours. The reaction was concentrated in vacuo, diluted with ethyl acetate and extracted with 1N HCl (2.x.50 mL). The aqueous layer was then neutralized with NaOH and extracted with ethyl acetate (3.x.50 mL). The organic layer was dried (Na2SO4) and concentrated to provide cis-3,5-dimethyl-1-(4-trifluoromethoxy-benzyl)-piperazine (1.01 g, 80percent). 1H NMR (400 MHz, CD3OD) delta 7.42 (d, 2H), 7.23 (d, 2H), 3.54 (s, 2H), 2.98-2.88 (m, 2H), 2.82-2.74 (m, 2H), 1.69 (t, 2H), 1.05 (d, 6H); LCMS 289.5 (M+1)+.

21655-48-1, 21655-48-1 cis-2,6-Dimethylpiperazine 6950261, apiperazines compound, is more and more widely used in various fields.

Reference：
Patent; KALYPSYS, INC.; US2008/4281; (2008); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

cis-3,5-Dimethyl-1-(4-trifluoromethoxy-benzyl)-piperazine: To a solution of 4-(trifluoromethoxy)-benzaldehyde (776 uL, 4.38 mmol) in methylene chloride (30 mL) was added cis-2,6-dimethyl piperazine (1.0 g, 8.77 mmol). After 1 hour sodium triacetoxy borohydride (2.45 g, 8.77 mmol) was added to the mixture. The solution was stirred at room temperature for an additional 4 hours. The reaction was concentrated in vacuo, diluted with ethyl acetate and extracted with 1N HCl (2.x.50 mL). The aqueous layer was then neutralized with NaOH and extracted with ethyl acetate (3.x.50 mL). The organic layer was dried (Na2SO4) and concentrated to provide cis-3,5-dimethyl-1-(4-trifluoromethoxy-benzyl)-piperazine (1.01 g, 80percent). 1H NMR (400 MHz, CD3OD) delta 7.42 (d, 2H), 7.23 (d, 2H), 3.54 (s, 2H), 2.98-2.88 (m, 2H), 2.82-2.74 (m, 2H), 1.69 (t, 2H), 1.05 (d, 6H); LCMS 289.5 (M+1)+.

21655-48-1, 21655-48-1 cis-2,6-Dimethylpiperazine 6950261, apiperazines compound, is more and more widely used in various fields.

Reference：
Patent; KALYPSYS, INC.; US2008/4281; (2008); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Methyl 4-fluorobenzoate (4.6 g, 29.7 mmol) was dissolved in DMSO (20 mL), followed by the addition of K2CO3 (12.3 g, 89.1 mmol) and 1-ethylpiperazine (7.6 mL, 59.4 mmol). The mixture was heated to 110 °C and stirred for 10 h before being cooled to room temperature and diluted with water (50 mL) and EtOAc (200 mL). The organic phase was washed with brine (50 mL), dried over Na2SO4, filtered, and concentrated. The residue was purified by silica gel column chromatography using CH2Cl2?MeOH (10:1) to get 4a (6.4 g, 89.2percent) as a yellow solid.

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

Reference：
Article; Cui, Jing; Peng, Xia; Gao, Dingding; Dai, Yang; Ai, Jing; Li, Yingxia; Bioorganic and Medicinal Chemistry Letters; vol. 27; 16; (2017); p. 3782 – 3786;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

21655-48-1, cis-2,6-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Methyl 4-fluorobenzoate (4.6 g, 29.7 mmol) was dissolved in DMSO (20 mL), followed by the addition of K2CO3 (12.3 g, 89.1 mmol) and 1-ethylpiperazine (7.6 mL, 59.4 mmol). The mixture was heated to 110 °C and stirred for 10 h before being cooled to room temperature and diluted with water (50 mL) and EtOAc (200 mL). The organic phase was washed with brine (50 mL), dried over Na2SO4, filtered, and concentrated. The residue was purified by silica gel column chromatography using CH2Cl2?MeOH (10:1) to get 4a (6.4 g, 89.2percent) as a yellow solid.

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

Reference：
Article; Cui, Jing; Peng, Xia; Gao, Dingding; Dai, Yang; Ai, Jing; Li, Yingxia; Bioorganic and Medicinal Chemistry Letters; vol. 27; 16; (2017); p. 3782 – 3786;,
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.21655-48-1,cis-2,6-Dimethylpiperazine,as a common compound, the synthetic route is as follows.

Under an argon atmosphere, 3,4-difluoronitrobenzene(1.0 g, 6.29 mmol) in acetonitrile (15 mL)To the solution was added cis-3,5-dimethylpiperazine (861 mg, 7.55 mmol), N, N-diisopropylethylamine (2.19 mL,12.6 mmol), and the mixture was stirred at 80 ° C. for 2 hours.Water was added to the reaction solution, and the mixture was extracted with chloroform.The chloroform layer was washed with saturated brine and saturated brine,After drying over anhydrous magnesium sulfate, filtration,The solvent was distilled off. The resulting residue was purified by silica gel column chromatography (NH column, chloroform / methanol) to give the title compound (1.42 g, 89percent)., 21655-48-1

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

Reference：
Patent; Yakult Honsha Corporation; Abe, Atsuhiro; Mae, Satoyuki; Yamazaki, Ryuta; Sawaguchi, Yuichi; Sugimoto, Takuya; Sasai, Toshio; Nishiyama, Hiroyuki; Nagaoka, Masato; Matsuzaki, Ken; Kurita, Akinobu; Matsui, Makoto; Shingeyama, Takahide; (208 pag.)JP6378918; (2018); B2;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics