Sodium hydride → Benzyl 3-(3-(tert-butoxycarbonyl)benzyl)-1-cyclohexyl-4-oxo-1,3,8-triazaspiro[4.5]decane-8-carboxylate

HRID 2362943Notes

Reaction equation

HRID 2362943 reaction equation
[H-].[Na+].[CH:3]1([N:9]2[C:13]3([CH2:18][CH2:17][N:16]([C:19]([O:21][CH2:22][C:23]4[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=4)=[O:20])[CH2:15][CH2:14]3)[C:12](=[O:29])[NH:11][CH2:10]2)[CH2:8][CH2:7][CH2:6][CH2:5][CH2:4]1.Br[CH2:31][C:32]1[CH:33]=[C:34]([CH:42]=[CH:43][CH:44]=1)[C:35]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36]>CN(C)C=O.O>[C:38]([O:37][C:35]([C:34]1[CH:33]=[C:32]([CH:44]=[CH:43][CH:42]=1)[CH2:31][N:11]1[C:12](=[O:29])[C:13]2([CH2:18][CH2:17][N:16]([C:19]([O:21][CH2:22][C:23]3[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=3)=[O:20])[CH2:15][CH2:14]2)[N:9]([CH:3]2[CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]2)[CH2:10]1)=[O:36])([CH3:41])([CH3:39])[CH3:40]

Participants

6

Reactant 3

HCID 24758Sodium hydrideHCID 14591193tert-Butyl 3-(bromomethyl)benzoateHCID 58046657Benzyl 1-cyclohexyl-4-oxo-1,3,8-triazaspiro[4.5]decane-8-carboxylate

Product 1

HCID 58046810Benzyl 3-(3-(tert-butoxycarbonyl)benzyl)-1-cyclohexyl-4-oxo-1,3,8-triazaspiro[4.5]decane-8-carboxylateYield 88%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

Sodium hydride (0.0699 g, 2.91 mol) was added portionwise at 0° C. to benzyl 1-cyclohexyl-4-oxo-1,3,8-triazaspiro[4.5]decane-8-carboxylate (1.03 g, 2.77 mmol) in N,N-dimethylformamide (5 mL) and stirred at 0° C. for 10 minutes. tert-Butyl 3-(bromomethyl)benzoate (0.75 g, 2.77 mmol) was added dropwise at 0° C., the mixture allowed to warm to room temperature, and stirred overnight. The reaction was diluted with water and extracted with ethyl acetate. The extracts were washed with water and brine, dried (MgSO4) and evaporated. The residue was purified by PTLC (50% ethyl acetate/hexanes) to give product as an oil (1.37 g, 88%); 1H NMR (DMSO-d6); δ0.97 (m, 1H); 1.20 (m, 4H); 1.53 (s, 9H); 1.53-1.69 (m, 9H); 2.60 (m, 1H); 3.59 (m, 2H); 3.73 (m, 2H); 4.47 (s, 2H); 5.09 (s, 2H); 7.30-7.39 (m, 5H); 7.45-7.50 (m, 2H); 7.73 (m, 1H); 7.81 (m, 1H); MS for C33H43N3O5 m/z 562 (M+H)+.

Workup

  1. temperatureto warm to room temperature
  2. stirringstirred overnight
  3. extractionextracted with ethyl acetate
  4. washThe extracts were washed with water and brine
  5. dry with materialdried (MgSO4)
  6. customevaporated
  7. customThe residue was purified by PTLC (50% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-3da44df7f08843c880ed951c42ed7c76
Source dataset
uspto-grants-2014_04
Patent number
US08691836B2

Reaction notes

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