1-(3-Hydroxyphenyl)piperazine → HCID 51000678, compound

Participants

Reaction Steps

Using the same starting material, 3-(4-bromobutyl)-6,7-dimethoxychromen-4-one obtained in Step 3 of Example 1, but with 3-hydroxyphenylpiperazine, and using a microwave reaction vessel (15 min, 160° C., 150 w), 3-{4-[4-(3-hydroxyphenyl)-piperazin-1-yl]-butyl}-6,7-dimethoxychromen-4-one is obtained in a similar manner to Example 1 in a yield of 17%. M.p. ° C.=177-180; analytical HPLC Sym C8, 4.6×250 mm, 5μ, eluant: CH3CN—H2O, KH2PO4 25-75-6.8 g/l, pH4, r.t.=9.99 min; MS ESI, m/z=439 (MH+); 1H NMR (CDCl3): 7.72 (s, 1H), 7.55 (s, 1H), 7.09 (t, 1H, J=8 Hz), 6.83 (s, 1H), 6.49 (d, 1H, J=8.28 Hz), 6.39 (s, 1H), 6.31 (d, 1H, J=7.84 Hz), 3.97 (s, 6H, OCH3), 3.18 (m, 4H), 2.58 (m, 4H), 2.49 (m, 2H), 2.43 (m, 2H), 1.62 (m, 4H).

Provenance & Evidence