反应详情

N-Benzyl-N-(3,4-dimethoxy-phenyl)-4-(1,4-dioxa-8-aza-spiro[4.5]dec-8-yl)-benzenesulfonamide(0.10 g, 0.19 mM) was stirred in 6M HCl (2 ml) and acetone(5 ml) at 60° C. overnight. The reaction mixture was basified with 5N NaOHaq. (until pH>7) and washed with ethyl acetate (3×10 ml). The organic extracts were dried with sodium sulfate, passed through a plug of magnesol, concentrated and triturated with hexanes to afford 0.65 g of the desired product as a white solid. H1 NMR(CDCl3) δ 2.58(t, 4H, J=6.06 Hz), 3.67(s, 3H), 3.74(t, 4H, J=6.12 Hz), 3.81(s, 3H), 4.71(s, 2H), 6.48(m, 3H), 6.67(d, 1H, J=8.46 Hz), 6.93(d, 2H), J=9.9 Hz), 7.20(m, 4H), 7.59(d, 2H, J=4.71 Hz). MS(ES) m/z 481.0; (MH+); HRMS for C26H28SN2O5: 481.1778.

1. customat 60° C.
2. customovernight
3. wash(until pH>7) and washed with ethyl acetate (3×10 ml)
4. dry with materialThe organic extracts were dried with sodium sulfate
5. concentrationconcentrated
6. customtriturated with hexanes