反应详情

In ethanol (25 ml), 5-fluoro-1-methylindole-3-carbaldehyde (989 mg, 5.58 mmol) and methyl 4-amino-3-hydroxyphenylacetate (1.27 g, 6.99 mmol) were stirred at room temperature for 9 hours. Iodobenzene diacetate (2.16 g, 6.69 mmol) was added and the mixture was stirred further at room temperature for 18 hours. The reaction mixture was distilled under reduced pressure to remove the solvent. The residue thus obtained was purified by chromatography on a silica gel column, whereby from n-hexane-ethyl acetate (1:2, v/v) eluate fractions, a mixture (933 mg) of methyl (2-(5-fluoro-1-methyl-3-indolyl)-6-benzoxazolyl)acetate and 5-fluoro-1-methylindole-3-carboxaldehyde was obtained as a red solid.

1. distillationThe reaction mixture was distilled under reduced pressure
2. customto remove the solvent
3. customThe residue thus obtained
4. customwas purified by chromatography on a silica gel column, whereby from n-hexane-ethyl acetate (1:2