反应详情

This compounds was synthesised in the same manner as described above. Resorcinol (0.66 g, 6 mmol), 3,4-dimethoxy-phenylacetic acid (1.18 g, 6 mmol), BF3Et2O (4 ml), PCl5 (1.9 g, 9.1 mmol), DMF (5 ml and 10 ml). The precipitate formed was filtered and re-crystallized from methanol to give 3-(3,4-Dimethoxy-phenyl)-7-hydroxy-chromen-4-one as a pale orange solid (1.43 g, 80%); Rf 0.9 ethyl acetate/hexane (75/25).

1. customThis compounds was synthesised in the same manner
2. customThe precipitate formed
3. filtrationwas filtered
4. customre-crystallized from methanol