反应详情

9-Nitro-1,2,3,4-tetrahydro-benzo[e][1,4]diazepin-5-one (763 mg, 3.67 mmol) was dissolved in anh DMF (10 ml). NaH (60% dispersion in mineral oil) (147 mg, 3.67 mmol) was added followed by allyl bromide (310 μL, 3.67 mmol). The resulting mixture was stirred at rt for 2 h. Reaction mixture was concentrated, diluted with CH2Cl2, and washed with H2O. The organic layer was dried over MgSO4, filtered, concentrated, and purified with silica gel chromatography (0-100% EtOAc in hexanes) to afford 1-Allyl-9-nitro-1,2,3,4-tetrahydro-benzo[e][1,4]diazepin-5-one as an orange solid (647 mg, 71%). mp 80-82° C.; LCMS: m/z=248.27 (M+H+); 1H NMR (400 MHz, CDCl3) δ 8.67 (m, 1H), 8.30 (dd, J=8.3 Hz, 1.5 Hz, 1H), 8.17 (dd, J=7.6 Hz, 1.5 Hz, 1H), 6.78 (t, J=7.8 Hz, 1HO, 5.85 (m, 1H), 5.29 (m, 2H), 4.22 (m, 2H), 3.74 (m, 2H), 3.58 (m, 2H).

1. customReaction mixture
2. concentrationwas concentrated
3. additiondiluted with CH2Cl2
4. washwashed with H2O
5. dry with materialThe organic layer was dried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated
8. custompurified with silica gel chromatography (0-100% EtOAc in hexanes)