Potassium Carbonate → Tert-butyl 3-((4-oxo-8-(4-oxo-4-(thiophen-2-yl)butyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

HRID 2363001Notes

Reaction equation

HRID 2363001 reaction equation
[O:1]=[C:2]1[C:6]2([CH2:11][CH2:10][NH:9][CH2:8][CH2:7]2)[N:5]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH2:4][N:3]1[CH2:18][C:19]1[CH:31]=[CH:30][C:22](C(OC(C)(C)C)=O)=[CH:21][CH:20]=1.I[CH2:33][CH2:34][CH2:35][C:36]([C:38]1[S:39][CH:40]=[CH:41][CH:42]=1)=[O:37].[C:43](=[O:46])([O-])[O-:44].[K+].[K+]>CN(C)C=O.C(OCC)(=O)C>[O:1]=[C:2]1[C:6]2([CH2:7][CH2:8][N:9]([CH2:33][CH2:34][CH2:35][C:36](=[O:37])[C:38]3[S:39][CH:40]=[CH:41][CH:42]=3)[CH2:10][CH2:11]2)[N:5]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH2:4][N:3]1[CH2:18][C:19]1[CH:20]=[C:21]([CH:22]=[CH:30][CH:31]=1)[C:43]([O:44][C:6]([CH3:11])([CH3:7])[CH3:2])=[O:46]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 126238664-Iodo-1-(thiophen-2-yl)butan-1-oneHCID 58046744tert-Butyl 4-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

Product 1

HCID 58046713Tert-butyl 3-((4-oxo-8-(4-oxo-4-(thiophen-2-yl)butyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoateYield 170.5%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

tert-Butyl 4-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (0.25 g, 0.593 mmol), 4-iodo-1-(thiophen-2-yl)butan-1-one (0.17 g, 0.593 mmol), and potassium carbonate (0.12 g, 0.890 mmol) in N,N-dimethylformamide (8 mL) were heated at 65° C. for 4 hours. The reaction was diluted with ethyl acetate, washed with water and brine, dried (MgSO4), and evaporated. The residue was purified by PTLC (5% methanol/dichloromethane) to give product as an oil (0.29 g, 84%); NMR (DMSO-d6); δ1.52 (s, 9H); 1.57 (m, 2H); 1.85 (m, 2H); 2.33-2.49 (m, 4H); 2.73 (m, 4H); 3.00 (m, 2H); 4.58 (s, 2H); 4.61 (m, 2H); 6.78 (m, 2H); 7.18-7.26 (m, 4H); 7.48-7.55 (m, 2H); 7.80-7.84 (m, 2H); 7.96-8.00 (m, 2H); MS for C33H39N3O4S m/z 574 (M+H)+.

Workup

  1. washwashed with water and brine
  2. dry with materialdried (MgSO4)
  3. customevaporated
  4. customThe residue was purified by PTLC (5% methanol/dichloromethane)

Sources & evidence

ORD record
ord-d3228d223b6041e0850432a750cbe7a1
Source dataset
uspto-grants-2014_04
Patent number
US08691836B2

Reaction notes

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