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

HRID 1751019Notes

Reaction equation

HRID 1751019 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-d1e1b490367c4ee0a918175896914bc6
Source dataset
uspto-grants-2015_10
Patent number
US09156840B2

Reaction notes

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