反应详情

To a solution of 4-[1-(3-aminobenzoyl)indol-3-yl]butyric acid hydrochloride (14.5 g) and diisopropylethylamine (22 ml) in dichloromethane (300 ml) was added bis(4-isobutylphenyl)methyl bromide (14.5 g) at room temperature. After stirring for 15 hours, diisopropylethylamine (7 ml) and bis(4-isobutylphenyl)methyl bromide 2.0 g) were added to the mixture. The mixture was stirred for 6 hours at room temperature and acidified by 7% hydrochloric acid (50 ml). The separated organic layer was washed with water and dried over magnesium sulfate. After the solvent was removed in vacuo, the residue was chromatographed on a column of silica gel (200 g) and eluted with chloroform to give a solid of 4-[1-[3-[bis(4-isobutylphenyl)methylamino]benzoyl]indol-3-yl]butyric acid (23.15 g).

1. stirringThe mixture was stirred for 6 hours at room temperature
2. washThe separated organic layer was washed with water
3. dry with materialdried over magnesium sulfate
4. customAfter the solvent was removed in vacuo
5. customthe residue was chromatographed on a column of silica gel (200 g)
6. washeluted with chloroform