N-benzyloxy-2-[4-(4-bromophenoxymethyl)-2,5-dioxo-imidazolidin-1-yl]-3-methylbutyramide → 2-[4-(4-Bromophenoxymethyl)-2,5-dioxo-imidazolidin-1-yl]-N-hydroxy-3-methylbutyramide

Participants

Reaction Steps

The oil obtained in step i above (22i) (271 mg, 0.571 mmol) and 10% Pd/C (31 mg) were stirred in MeOH (25 mL) at room temperature for 3 h under H2 atmosphere, the mixture was filtered through celite, washed with MeOH for several times and then concentrated. The residue was purified by silica gel column chromatography which gave the title compound as an oil (118 mg, 52% yield).

Provenance & Evidence