反应详情

A mixture of 33.0 grams (0.086 mole) of 4-[2,6-dichloro-4-(phenylmethoxy)phenoxy]butyl acetate and 0.05 gram (catalyst) of 10% palladium on carbon in 350 mL of ethanol was subjected to hydrogenation conditions using a Parr hydrogenator. After the theoretical uptake of hydrogen, gas chromatographic (GC) analysis of the reaction mixture indicated the reaction was about 50% complete. Additional catalyst was added and the reaction mixture was again subjected to hydrogenation conditions using the Parr hydrogenator. GC analysis of the reaction mixture indicated the reaction was now complete. The reaction mixture was filtered and concentrated under reduced pressure, yielding 25.4 grams of the subject compound as a residue. The NMR spectrum was consistent with the proposed structure.

1. additionAdditional catalyst was added
2. filtrationThe reaction mixture was filtered
3. concentrationconcentrated under reduced pressure