Category: 639068-43-2

639068-43-2, tert-Butyl 3,5-dimethylpiperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

639068-43-2, 2) Synthesis of cis-1-tert-butoxycarbonyl-3,5-dimethyl-4-benzyl piperazine To a suspension of 10 g (46.66 mmol.) of cis-1-tert-butoxycarbonyl-3,5-dimethyl piperazine and 12.90 g (93.3 mmol.) of potassium carbonate in N,N-dimethylformamide (100 ml) was added, at room temperature, 11.97 g (70 mmol.) of benzyl bromide. The mixture was stirred for 16 hours at 120¡ã C. To the reaction system was added water, which was subjected to extraction with ethyl acetate. The organic layer was washed with a saturated aqueous saline solution, which was dried over magnesium sulfate, followed by distilling off the solvent. The residue was purified by means of a column chromatography (ethyl acetate/hexane 30percent) to give the object compound as a pale yellow oily product. The yield was 13.56 g (95percent). 1H-NMR (CDCl3, 200 MHz) delta: 1.04 (6H, d, J=5.8 Hz), 1.45 (9H, s), 2.45-2.75 (4H, m), 3.67-3.92 (2H, m), 3.81 (2H, s), 7.15-7.39 (5H, m). IR (neat): 2980, 1693, 1423, 1136, 1061, 924, 883, 766, 729, 700 cm-1.

639068-43-2 tert-Butyl 3,5-dimethylpiperazine-1-carboxylate 22219990, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Takeda Chemical Industries, Ltd.; US6235731; (2001); B1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

639068-43-2, tert-Butyl 3,5-dimethylpiperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,639068-43-2

3,5-Dimethylpiperazine-1-carboxylic acid tert-butyl ester (1.676 g) and 2-chloropyrimidine (716 mg) were combined, melted in an oil bath at 120¡ãC, and stirred for 5 hr 30 min. Water (10 ml) was added and the mixture was stirred, extracted with ethyl acetate (30 ml), and washed with saturated brine. The extract was dried over anhydrous sodium sulfate, and the solvent was evaporated. The obtained residue was purified by column chromatography (Yamazen HI-FLASH.(TM). COLUMN size L, elution solvent: hexane/ethyl acetate) to give the title compound (333 mg). 1H-NMR (CDCl3)delta:1.25(6H,d,J=6.9 Hz), 1.51(9H,s), 2.97-3.08(2H,m), 3.95-4.16(2H,m), 4.65-4.82(2H,m), 6.51(1H,t,J=4.5 Hz), 8.34(2H,d,J=4.8 Hz). MS:237 (M++1 when tert-butyl group was cleaved).

639068-43-2 tert-Butyl 3,5-dimethylpiperazine-1-carboxylate 22219990, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Mitsubishi Tanabe Pharma Corporation; EP2154135; (2010); 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.639068-43-2,tert-Butyl 3,5-dimethylpiperazine-1-carboxylate,as a common compound, the synthetic route is as follows.,639068-43-2

tert-Butyl 3,5-dimethylpiperazin-1-carboxylate (200.0 mg, 0.93 mmol) and 37percent formaldehyde (440.0 muL, 5.56 mmol) were dissolved in MeOH (5.0 mL), and NaBH4 (172.6 mg, 5.56 mmol) was slowly added thereto and stirred at room temperature for 12 hours. Brine was poured into the reaction mixture, and it was extracted with DCM (30.0 mL). The organic layer was dried over anhydrous Na2SO4, filtered and then distilled under reduced pressure. The residue was purified column chromatography (DCM:MeOH=95:5) on silica to obtain yellow liquid compound of tert-butyl 3,4,5-trimethylpiperazin-1-carboxylate (57.0 mg, 27percent).

639068-43-2 tert-Butyl 3,5-dimethylpiperazine-1-carboxylate 22219990, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; C&C RESEARCH LABORATORIES; Ho, Pil Su; Yoon, Dong Oh; Han, Sun Young; Lee, Won Il; Kim, Jung Sook; Park, Woul Seong; Ahn, Sung Oh; Kim, Hye Jung; US2014/315888; (2014); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

639068-43-2,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.639068-43-2,tert-Butyl 3,5-dimethylpiperazine-1-carboxylate,as a common compound, the synthetic route is as follows.

A solution of potassium carbonate (1.4370 g, 10.40 mmol) in water (3 mL) was added to a mixture of l-N-/-Boc-3,5-dimethyl piperazine (0.6882 g, 3.21 mmol) and mPEG3- Br (0.8872 g, 3.91 mmol) in a vial. The resulting mixture was heated at 120 ¡ãC for 1.5 h by using microwave. The mixture was diluted with water, extracted with dichloromethane (3 x 30 mL). The combined organic solution was washed with brine, dried over brine, concentrated. The residue was dried under high vacuum. The residue was separated with flash column chromatography on silica gel column using 1-5percent methanol/dichloromethane, and NH-column using 0-5percent methanol/ dichloromethane to afford the intermediate.

639068-43-2 tert-Butyl 3,5-dimethylpiperazine-1-carboxylate 22219990, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; NEKTAR THERAPEUTICS (INDIA) PVT. LTD.; NEKTAR THERAPEUTICS; SHARMA, PANKAJ; KHATRI, VIJAY KUMAR; GU, XUYUAN; SONG, YUAN; SHEN, MICHAEL LIXIN; SAUTHIER, JENNIFER RIGGS; ANAND, NEEL K.; KOZLOWSKI, ANTONI; ODINECS, ALEKSANDRS; RILEY, TIMOTHY A.; REN, ZHONGXU; MU. YONGQI; SHEN, XIAOMING; YUAN. XUEJUN; AURRECOECHEA, NATALIA; O’MAHONY, DONOGH JOHN ROGER; WO2015/92819; (2015); A2;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics