反应详情

A solution of 1-(1,4-benzodioxan-5-yl)-4-(2-(2,2-dimethoxy-1-ethylamino)-1-ethyl)piperazine (2.3 g) and 4-fluorophenyl isocyanate (0.9 g) in methylene chloride (100 ml) was refluxed for 2 h. Removal of solvent in vacuo gave an oil which was purified on a silica gel column (eluent: ethyl acetate/methanol=3:1). The product, 1-(1,4-benzodioxan5-yl)-4-(2-(N-(2,2-dimethoxy 1-ethyl)-N-(4-fluorophenylaminocarbonyl)-amino)-1-ethyl)piperazine, was obtained as a solid (2.5 g).

1. customRemoval of solvent in vacuo
2. customgave an oil which
3. customwas purified on a silica gel column (eluent: ethyl acetate/methanol=3:1)