With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.13889-98-0,1-Acetylpiperazine,as a common compound, the synthetic route is as follows.
A mixture of N-[4-(2-Bromo-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-methoxy-benzamide (90 mg, 0.21 mmole), and 1-Piperazin-1-yl-ethanone (32 mg, 1.2 eq), and K2CO3 (116 mg, 4.0 eq) in 2 mL DMF was stirred at 120 C. for 20 minutes in microwave. The mixture was purified by HPLC to give title compound as a white solid as TFA salt (97 mg, 97%). 1H NMR (Acetone-d6, 400 MHz) delta 2.07 (s, 3H), 3.30 (sb, 4H), 3.71 (t, J=4.80 Hz, 2H), 3.75 (s, 3H), 3.79 (sb, 2H), 3.87 (s, 3H), 4.60 (t, J=4.80 Hz, 2H), 4.99 (sb, 2H), 6.32 (s, 1H), 7.13 (d, J=8.08 Hz, 1H), 7.23 (d, J=9.09 Hz, 1H), 7.42 (t, J=8.08 Hz, 1H), 7.53 (m, 2H), 7.56 (d, J=7.83 Hz, 1H), 7.82 (s, 1H), 7.94 (dd, J=8.84, 2.53 Hz, 1H), 9.56 (s, NH). Exact mass calculated for C26H31N5O4477.2, found 478.3 (MH+).
13889-98-0, 13889-98-0 1-Acetylpiperazine 83795, apiperazines compound, is more and more widely used in various fields.
Reference：
Patent; Teegarden, Bradley; Xiong, Yifeng; Strah-Pleynet, Sonja; Jayakumar, Honnappa; Dosa, Peter I.; Feichtinger, Konrad; Casper, Martin; Lehmann, Juerg; Jones, Robert M.; Unett, David J.; Karoline Choi, Jin Sun; US2007/207994; (2007); A1;,
Piperazine – Wikipedia
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