215309-01-6, 3-(4-Methylpiperazin-1-yl)benzoic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
To a suspension of 3-(4-methylpiperazin-1-yl)benzoic acid (0.58 g, 2 mmol) in dichloromethane (50 mL) and DMF (2 drops), oxalyl chloride (0.9 mL, 10 mmol) was added dropwise at RT. After addition the reaction mixture was heated at 60 C. for 2 h. After concentration and stripping with toluene the crude acyl chloride was dissolved in dry THF (7 mL)/triethylamine (3 mmol) and t-butylglycinate (0.286 mL, 2.1 mmol) was added at RT and the reaction mixture was stirred at RT overnight. After concentration obtained 0.66 g (2 mmol, quant.) of tert-butyl N-[3-(4-methylpiperazin-1-yl)benzoyl]glycinate. The above obtained t-butyl ester (0.1 g, 0.3 mmol) was stirred at RT in dichloromethane (4 mL) and trifluoroacetic acid (3 mL) overnight. The solvents were removed under reduced pressure and the crude material stripped three times with toluene. Obtained the corresponding acid (0.080 g. 96% yield). The acid was then reacted as described in Example 1 to afford the title compound. H-NMR (DMSOd6), delta ppm: 2.87 (s, 3 H) 3.13-4.03 (m, 8 H) 7.24-7.95 (m, 6 H) 8.36 (dd, J=4.63, 1.59 Hz, 1 H) 8.52 (d, J=2.44 Hz, 1 H) 9.11 (d, J=7.32 Hz, 1 H) 10.48 (s, 1 H) 11.83-11.96 (m, 1 H) 12.58 (s,1 H), 215309-01-6
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Reference£º
Patent; Pharmacia Italia S.p.A.; US2007/112020; (2007); A1;,
Piperazine – Wikipedia
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