tert-Butyl 7-benzyl-6-oxo-1,7-diazaspiro[4.5]decane-1-carboxylate → tert-Butyl 1,7-diazaspiro[4.5]decane-1-carboxylate
Reaction equation
[C:1]([O:5][C:6]([N:8]1[C:12]2([CH2:17][CH2:16][CH2:15][N:14](CC3C=CC=CC=3)[C:13]2=O)[CH2:11][CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]>O1CCCC1.CO.[C+4].[OH-].[Pd+2].[OH-].[OH-].[OH-].[OH-].[OH-]>[C:1]([O:5][C:6]([N:8]1[C:12]2([CH2:17][CH2:16][CH2:15][NH:14][CH2:13]2)[CH2:11][CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]Participants
4
Procedure
To a solution of 7-benzyl-6-oxo-1,7-diazaspiro[4.5]decane-1-carboxylic acid tert-butyl ester (76 mg) in tetrahydrofuran/methanol (1 ml/1 ml) was added 20% palladium hydroxide carbon (15 mg), and the mixture was hydrogenated under 4 atmospheres. The mixture was filtered through Celite under nitrogen, and the filtrate was concentrated under reduced pressure to give the titled compound (51 mg).