Category: 187669-60-9piperazines

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.187669-60-9,1-(4-(Methylsulfonyl)phenyl)piperazine,as a common compound, the synthetic route is as follows.

Example 80; 4-{2-[4-(4-Mcthancsulfonylphcnyl)pipcrazin-l-yl]-2-oxocthyl}pipcridinc-l- carboxylic acid ferf-butyl ester; To a solution of l-(4-methanesulfonylphenyl)piperazine (0.22 g, 0.91 mmol), 4-carboxy methylpiperidine-1-carboxylic acid tert-butyl ester (0.20 g, 0.80 mmol), HOBT.H2O (0.14 g, 0.91 mmol) and DIPEA (0.47 mL, 2.72 mmol) in DMF (5mL) was added EDCI (0.19 g, 0.99 mmol) and the mixture was stirred for 18h. The solvent was removed under vacuum and the resulting residue was partitioned between EtOAc and saturated NaHCO3 solution. The aqueous phase was re-extracted with EtOAc, the organic extracts were combined, washed with brine, dried (MgSO4) and adsorbed onto SiO2. The adsorbed sample was purified by flash chromatography eluting with 50:50 EtOAc:hexane to afford the title compound: RT = 3.26 min; m/z (ES+) = 466.33 [M+H]+., 187669-60-9

The synthetic route of 187669-60-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; PROSIDION LIMITED; WO2007/3964; (2007); 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.187669-60-9,1-(4-(Methylsulfonyl)phenyl)piperazine,as a common compound, the synthetic route is as follows.

Example 77; 4-{2-[4-(4-Methanesulfonylphenyl)piperazin-l-yl]ethylidene}piperidine-l- carboxylic acid tert-butyl ester; To a solution of 4-(2-hydroxyethylidene)piperidine-l-carboxylic acid tert-butyl ester (2.2g, 9.7mmol) in DCM (25mL) was added Et3N (2.02mL, 14.5mmol) and the reaction cooled to O0C. To this cooled mixture was added methanesulfonylchloride (0.98mL, 12.6mmol) dropwise. The reaction was stirred at O0C for 20 min then treated with saturated NaHCO3 solution. The two layers were separated and the organic layer washed with water, brine, dried (MgSO4) and the solvent removed in vacuo. The crude mixture was purified by flash chromatography with 10% EtOAc / Hexane as eluent to afford 4-(2-chloroethylidene) piperidine-1-carboxylic acid tert-butyl ester and 4-vinyl-3,6-dihydro-2H-pyridine-l-carboxylic acid tert-butyl ester in a 1:1 ratio (0.95Og). The mixture was dissolved in DMF (5mL) and treated with TBAI (0.068g, 0.18mmol). This suspension was thus added to a preformed mixture of l-(4-methanesulfonylphenyl)piperazine (0.487g, 2.03mmol) and sodium hydride (0.1 Ig of a 60% dispersion in mineral oil, 2.77mmol) in DMF (5mL) at rt. The mixture was allowed to stir for 2h then treated with water. The aqueous was extracted with EtOAc and the combined organic layers washed with water, brine, dried (MgSO4) and the solvent removed in vacuo. The crude mixture was purified by HPLC to afford the title compound (0.27g, 6%): RT = 2.41 min; m/z (ES+) = 450.2 [M+ H]+, 187669-60-9

As the paragraph descriping shows that 187669-60-9 is playing an increasingly important role.

Reference£º
Patent; PROSIDION LIMITED; WO2007/3964; (2007); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics