Acetic Acid → (7R,8aS)-4-benzhydryl-7-[(tert-butyldimethylsilyl)oxy)octahydropyrrolo[1,2-a]pyrazine

Participants

Reaction Steps

A solution of (2S,4R)-2-[[N-benzyl-N-(2-oxo-3,3-diphenylpropyl)amino]methyl]-4-[(tert-butyldimethylsilyl)oxy]-1-pyrrolidinecarboxylate (4.82 g) and acetic acid (0.87 g) in methanol (100 ml) was hydrogenated over 10% palladium-charcoal (50% wet, 1.0 g) at room temperature under 2-3 atoms for 15 hours. After removal of the catalyst by filtration, the filtrate was evaporated under reduced pressure to give bis(acetic acid) salt of (7R,8aS)-4-benzhydryl-7-[(tert-butyldimethylsilyl)oxy]octahydropyrrolo[1,2-a]pyrazine (4.05 g) as a syrup.

Provenance & Evidence