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 2362866Notes

Reaction equation

HRID 2362866 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]>CO.[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

4

Reactant 1

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

Product 1

HCID 58046667Tert-butyl 3-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoateYield 94%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

To a solution of benzyl 3-(3-(tert-butoxycarbonyl)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate (1.7 g, 3.06 mmol) in methanol (20 mL), was added 10 wt % palladium on carbon (0.5 g). After stirring under hydrogen at room temperature and atmospheric pressure for 2 hours, the reaction mixture was filtered, washed with methanol, concentrated in vacuo to obtain tert-butyl 3-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (1.2 g, 94%).

Workup

  1. filtrationthe reaction mixture was filtered
  2. washwashed with methanol
  3. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-06162aa1da45481697253420814b0a13
Source dataset
uspto-grants-2014_04
Patent number
US08691836B2

Reaction notes

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