反应详情

温度

20 °C

A solution of (2-amino-5-dimethylamino-4-trifluoromethyl-phenyl)-carbamic acid tert-butyl ester (Example J6) (0.32 g) and 3-oxo-3-[3-(2-bromo-1,1-dimethoxy-ethyl)-phenyl]-propionic acid tert-butyl ester (0.43 g) (Example K28) in toluene (3 mL) was heated to 100° C. for 2 h. The solvent was evaporated in vacuum and the crude product was purified by chromatography on silica gel using AcOEt/Hexan(1:3) as eluent. A solution of the purified material (0.57 g) in CH2Cl2/TFA (1:1, 7 mL) was stirred at 20° C. for 15 min and then evaporated. The residual oil was dissolved in AcOEt and the solution was washed with IN HCl and with brine, dried and evaporated to give crude 4-(3-bromoacetyl-phenyl)-7-dimethylamino-8-trifluoromethyl-1,3-dihydro-benzo[b][1,4]diazepin-2-one (0.22 g) as light-brown solid.

1. customwas heated to 100° C. for 2 h
2. customThe solvent was evaporated in vacuum
3. customthe crude product was purified by chromatography on silica gel
4. customevaporated
5. dissolutionThe residual oil was dissolved in AcOEt
6. washthe solution was washed with IN HCl and with brine
7. customdried
8. customevaporated