反应详情

3-Nitro-6,7,8,9-tetrahydro-5-oxa-9-aza-benzocycloheptene (203 mg, 1.04 mmol) and 4-Dimethylaminopyridine (13 mg, 0.10 mmol) in Pyridine (3.5 mL) was treated with Methoxyacetyl chloride (0.15 mL, 1.6 mmol) was added to the vial and stirred at rt. After 4 h, the mixture was partitioned between EtOAc and water, separated and the org. layer was washed with 1N HCl. After washing with brine and drying, 2-Methoxy-1-(3-nitro-7,8-dihydro-6H-5-oxa-9-aza-benzocyclohepten-9-yl)-ethanone was isolated following silica gel chromatography (0-100% EtOAc:Hex) as yellow solids (270 mg, 97%). 1H-NMR (CDCl3): 7.96 (m, 2H), 7.36 (m, 1H), 4.82 (m, 1H), 4.25 (m, 2H), 3.89 (m, 3H), 3.34 (s, 3H), 2.96 (m, 1H), 2.13 (m, 2H).

1. additionwas added to the vial and
2. customthe mixture was partitioned between EtOAc and water
3. customseparated
4. washlayer was washed with 1N HCl
5. washAfter washing with brine
6. customdrying