(S)-(4-Nitro-benzenesulfonylamino)-phenyl-acetic acid cyclopentyl ester → (S)-(4-Amino-benzenesulfonylamino)-phenyl-acetic acid cyclopentyl ester

Participants

Reaction Steps

A mixture of (S)-(4-Nitro-benzenesulfonylamino)-phenyl-acetic acid cyclopentyl ester (5.29 g, 13.1 mmol) and 10% Pd/C (5.0 g) in EtOAc (350 ml) was hydrogenated under balloon pressure at room temperature for 24 h. The Pd/C catalyst was filtered off through a pad of celite. The filtrate was concentrated under reduced pressure to yield the required product (4.54 g, 92% yield). LCMS purity 100%, m/z 375 [M++H]+.

Provenance & Evidence