((R)-4-benzyloxycarbonylamino-4,5,6,7-tetrahydro-indazol-1-yl)-acetic acid ethyl ester → HCID 59152881, compound

Participants

Reaction Steps

A solution of ((R)-4-benzyloxycarbonylamino-4,5,6,7-tetrahydro-indazol-1-yl)-acetic acid ethyl ester (357 mg, 1.0 mmol) in ethanol was hydrogenolyzed over 10% palladium on carbon (40 mg) under atmospheric pressure at room temperature for 3 hours. The reaction mixture was then filtered through a pad of Celite® (diatomite filter). The filtrate was collected, and concentrated in vacuo to afford ((R)-4-amino-4,5,6,7-tetrahydro-indazol-1-yl)-acetic acid ethyl ester (224 mg, 99%) as a light yellow oil. MS calcd. for C11H17N3O2 223, obsd. (ESI+) [(M+H)+] 224.

Provenance & Evidence