反应详情

Hydrogenation: A solution of (E)-(2S,4R)-4-tert-butoxy-1-(naphthalene-2-sulfonyl)-2-(3-phenyl-allyloxymethyl)-pyrrolidine (2.3 g) in ethanol/dioxane 1:2 (75 ml) was hydrogenated in the presence of 10% palladium on charcoal (0.50 g) at 1.1 bar and room temperature for 4 h. The reaction mixture was filtered over a pad of celite and washed with ethanol. The filtrate was concentrated, and the residue was chromatographed on silica gel using EtOAc/hexane 1:4 as eluent to obtain (2S,4R)-4-tert-butoxy-1-(naphthalene-2-sulfonyl)-2-(3-phenyl-propoxymethyl)-pyrrolidine (2.16 g) as a gum, MS: 482 (MH+).

1. filtrationThe reaction mixture was filtered over a pad of celite
2. washwashed with ethanol
3. concentrationThe filtrate was concentrated
4. customthe residue was chromatographed on silica gel