反应详情

The ester product of step (d) was dissolved in ethyl acetate and reduced under hydrogen with palladium/charcoal catalyst until uptake of hydrogen was complete. The solution was filtered and evaporated to leave ethyl 6-hydroxy-7-propylbenzofuran-2-carboxylate (2.8 g) as a pink solid.

1. filtrationThe solution was filtered
2. customevaporated