Tag: 109-07-9

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.109-07-9,2-Methylpiperazine,as a common compound, the synthetic route is as follows.

Reference Example 10 benzyl 3-methylpiperazine-1-carboxylate A 4 g portion of 2-methylpiperazine was dissolved in 40 ml of dichloromethane, and 1.71 g of benzyl chloroformate was added dropwise thereto at -78 C. After 1 hour of stirring, the mixture was washed by adding water and dried and then the solvent was evaporated to obtain 2.0 g of the title compound., 109-07-9

The synthetic route of 109-07-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Yamanouchi Pharmaceutical Co. Ltd.; US6673799; (2004); B1;,
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.109-07-9,2-Methylpiperazine,as a common compound, the synthetic route is as follows.

Method 1 1-(t-Butoxycarbonyl)-3-methylpiperazine To a cold (-5¡ã C.) solution of 2-methylpiperazine (5.00 g, 0.05 mole) in 200 mL of CH2 Cl2 under Ar was added a solution of di-t-butyl dicarbonate (10.9 g, 0.05 mole) in 100 mL of CH2 Cl2 over 1 h. The resulting mixture was stirred at -5¡ã C. for 1 h and then at r.t. for 2 h. The solution was then washed (H2 O), dried (Na2 SO4) and evaporated to give an oil which was chromatographed (SiO2 /ethyl acetate then ethyl acetate-MeOH-NH4 OH 10:1:0.1) to give the product (4.30 g, 43percent) as an oil. This material was used without further purification: 1 H nmr (200 MHz, CDCl3) delta4.15-3.75 (br s, 2H), 3.0-2.6 (m, 4H), 2.47-2.35 (m, 1H), 1.48 (s, 9H), 1.08 (d, J=6.7 Hz, 3H)., 109-07-9

109-07-9 2-Methylpiperazine 66057, apiperazines compound, is more and more widely used in various.

Reference£º
Patent; Bristol-Myers Squibb Company; US5300506; (1994); A;,
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.109-07-9,2-Methylpiperazine,as a common compound, the synthetic route is as follows.

A. To a solution of 2-methylpiperazine (0.10 g, 1 mmol) in CH2Cl2 (2 mL) was added 4-fluorobenzyl bromide (0.125 mL, 1 mmol). The resultant mixture was stirred at ambient temperature. After 15 hours, the mixture was concentrated in vacuo to afford a solid. This solid was dissolved in CH2Cl2 and washed sequentially with water, aqueous NaHCO3 solution, then brine. The organic layer was dried over MgSO4, filtered, and concentrated to an oil. Purification by flash column chromatography afforded 0.025 g (12% yield) of 1-(4-fluorobenzyl)-3-methylpiperazine, a compound of formula (C), as a colorless oil; NMR (CDCl3) 7.3 (m, 2), 7.0 (m, 2), 3.4 (s,2), 3.0-2.6 (m, 5), 2.0 (br s, 2), 1.6 (t, 1), 1.0 (d, 3) ppm.

109-07-9, The synthetic route of 109-07-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Schering Aktiengesellschaft; US6207665; (2001); B1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

109-07-9, 2-Methylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 29 2-(4-Chlorophenoxy)ethyl 3-(3-methyl-1-piperazinyl)-2-pyrazinyl Ether The title compound was prepared according to the procedure described in Example 4, Step 2, starting from 2-chloro-3-[2-(4-chlorophenoxy)ethoxy]pyrazine* (150 mg, 0.53 mmol) and 2-methylpiperazine (256 mg, 2.56 mmol) with the exception that a final extraction step between EtOAc and 5% aqueous NaOH was carried out. This gave 143 mg (77%) of the title product. HRMS m/z calcd for C17H21ClN4O2 (M)+348.1353, found 348.1370. Anal. (C17H21ClN4O2) C, H, N. *Prepared according to the procedure described in Example 4, Step 1., 109-07-9

The synthetic route of 109-07-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Biovitrum AB; US6465467; (2002); B1;,
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.109-07-9,2-Methylpiperazine,as a common compound, the synthetic route is as follows.

To a solution of 5-bromobenzofuran (250 mg, 1.27 mmol, 1.0 equiv.) and 2-methylpiperazine (508.4 mg, 5.08 mmol, 4.0 equiv.) in toluene (7 mL) was added PdCl2[P(o-Tol)3]2 (30 mg, 0.04 mmol, 0.04 equiv.) followed by sodium tert-butoxide (183 mg, 1.91 mmol, 1.5 equiv.). The resulting mixture was heated to 100 C. with stirring under nitrogen. After stirred at same temperature for 16 hours, the reaction mixture was cooled to room temperature and then diluted with ethyl acetate (100 mL). The resulting solution was washed with water, brine and then dried over Na2SO4. After removal of solvent, the crude product was purified by chromatography to give 132 mg (48% yield) of 1-Benzofuran-5-yl-3-methyl-piperazine. 1H NMR (400 MHz, CDCl3), delta (ppm): 7.56 (d, 1H), 7.39(d, 1H), 7.10 (d, 1H), 7.00 (dd, 1H), 6.69 (m, 1H), 3.44 (d, 2H), 306 (m, 3H), 2.72 (dt, 1H), 2.38 (d, 1H), 1.14 (d, 3H).

As the paragraph descriping shows that 109-07-9 is playing an increasingly important role.

Reference£º
Patent; Kalypsys, Inc.; US2005/234046; (2005); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

109-07-9, 2-Methylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 11 An experiment was carried out as described for Example 9, except that 45.55 g of 1-butanol and 4.61 g of water (water content 9.2 wt%) were used instead of 50.00 g of 1-butanol. As a result, the conversion of 2-methylpiperazine was 94.3%, and the selectivity of 1-tert-butoxycarbonyl-3-methylpiperazine was 85.8% (reaction yield 80.9%).Comparative Example 8 An experiment was carried out as described for Example 9, except that 37.56 g of 1-butanol and 12.67 g of water (water content 25.2 wt%) were used instead of 50.00 g of 1-butanol. As a result, the conversion of 2-methylpiperazine was 81.6%, and the selectivity of 1-tert-butoxycarbonyl-3-methylpiperazine was 70.9% (reaction yield 57.9%).Comparative Example 9 An experiment was carried out as described for Example 9, except that 25.00 g of 1-butanol and 25.00 g of water (water content 50.0 wt%) were used instead of 50.00 g of 1-butanol. As a result, the conversion of 2-methylpiperazine was 81.2%, and the selectivity of 1-tert-butoxycarbonyl-3-methylpiperazine was 41.8% (reaction yield 33.9%).

109-07-9 2-Methylpiperazine 66057, apiperazines compound, is more and more widely used in various.

Reference£º
Patent; Toray Fine Chemicals Co., Ltd.; EP1548010; (2005); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics