Benzyl 3-(3-(tert-butoxycarbonyl)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate → Tert-butyl 3-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

HRID 1751014Notes

Reaction equation

HRID 1751014 reaction equation
[C:1]([O:5][C:6]([C:8]1[CH:9]=[C:10]([CH:39]=[CH:40][CH:41]=1)[CH2:11][N:12]1[C:16](=[O:17])[C:15]2([CH2:22][CH2:21][N:20](C(OCC3C=CC=CC=3)=O)[CH2:19][CH2:18]2)[N:14]([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[CH2:13]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H][H]>C(OCC)(=O)C.C(O)C.[Pd]>[O:17]=[C:16]1[C:15]2([CH2:22][CH2:21][NH:20][CH2:19][CH2:18]2)[N:14]([C:33]2[CH:34]=[CH:35][CH:36]=[CH:37][CH:38]=2)[CH2:13][N:12]1[CH2:11][C:10]1[CH:9]=[C:8]([CH:41]=[CH:40][CH:39]=1)[C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:7]

Participants

6

Reactant 2

HCID 58046726Benzyl 3-(3-(tert-butoxycarbonyl)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylateHCID 178418361HCID 178418361, compound

Product 1

HCID 58046667Tert-butyl 3-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoateYield 97.3%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 702EthanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of benzyl 3-(3-(tert-butoxycarbonyl)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate (5 g, 9.0 mmol, 1 equiv) in a mixture of ethyl acetate and ethanol was charged with 10% palladium on carbon (1 g, 20%/wt) and the resulting mixture was stabilized to a hydrogen atmosphere. The reaction was stirred as such for 2 h, filtered through Celite and the filtrate was concentrated in vacuo to afford the title compound as a grey foam (3.69 g, 97%); 1H NMR (400 MHz, DMSO-d6): δ 1.52 (s, 9H); 1.54-1.56 (m, 2H); 2.43-2.49 (m, 2H); 2.88-2.93 (m, 2H); 3.18-3.24 (m, 2H); 4.58 (s, 2H); 4.62 (s, 2H); 6.74 (t, 2H, J=6.8 and 7.6 Hz); 6.88 (d, 2H, J=8 Hz); 7.18-7.22 (m, 2H); 7.49-7.55 (m, 2H); 7.79-7.85 (m, 2H); MS for C25H31N3O3 m/z 422.24 (M+H)+.

Workup

  1. filtrationfiltered through Celite
  2. concentrationthe filtrate was concentrated in vacuo

Sources & evidence

ORD record
ord-d2dd41fe79214588a772ad793b89837d
Source dataset
uspto-grants-2015_10
Patent number
US09156840B2

Reaction notes

Loading…