反应详情

In a test tube containing of 2-(1-bromo-ethyl)-3-methyl-4-oxo-3,4-dihydro-quinazoline-6-carbonitrile (40.0 mg, 0.14 mmol) in acetonitrile (2 ml) was added KI (34.0 mg, 0.21 mmol), and (1-(4-Methoxy-benzenesulfonyl)-piperazine (46.4 mg, 0.21 mmol). The reaction was heated for 18 hours. The solution was concentrated under reduced pressure. The residue was partitioned between water (2 ml) and dichloromethane (5 ml). The organic layer was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The solvent was removed under vacuum. The resulting residue was dissolvent in DMSO (2 ml) and purified by HPLC (Gilson-215, 0.035% TFA in acetonitrile and 0.05% water as mobile phase). The product was collected and dried under reduced pressure to give the 2-{1-[4-(4-Methoxy-benzenesulfonyl)-piperazin-1-yl]-ethyl}-3-methyl-4-oxo-3,4-dihydro-quinazoline-6-carbonitrile compound (Yield 5.52 mg, 8.2%). 1H NMR (400 MHz, CDCl3): δ 1.64 (d, 3H, J=6.57 Hz), 3.29-3.10 (m, 6H), 3.48-3.37 (m, 2H), 3.68 (s, 3H), 3.90 (s, 3H), 4.53 (q, 1H, J=13.14, 5.81 Hz), 6.97 (d, 2H, J=2.02 Hz), 7.66 (d, 2H, J=8.84, Hz), 7.76 (d, 1H, J=8.59 Hz), 7.94 (dd, 1H J=8.59, 2.02 Hz), 8.57 (d, 1H, J=2.02 Hz). MS m/z calc. 467.16, found (ESI); 468.4 (M+1)+. Retention time 2.75 minutes.

1. additionwas added KI (34.0 mg, 0.21 mmol)
2. temperatureThe reaction was heated for 18 hours
3. concentrationThe solution was concentrated under reduced pressure
4. customThe residue was partitioned between water (2 ml) and dichloromethane (5 ml)
5. dry with materialThe organic layer was dried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customThe solvent was removed under vacuum
9. dissolutionThe resulting residue was dissolvent in DMSO (2 ml)
10. custompurified by HPLC (Gilson-215, 0.035% TFA in acetonitrile and 0.05% water as mobile phase)
11. customThe product was collected
12. customdried under reduced pressure