Ethyl Acetate → methyl 3-((8-(3-(3-methyl-2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

HRID 1751001Notes

Reaction equation

HRID 1751001 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:20]=[C:21]([CH:26]=[CH:27][CH:28]=1)[C:22]([O:24][CH3:25])=[O:23].I[CH2:30][CH2:31][CH2:32][N:33]1[C:37]2[CH:38]=[CH:39][CH:40]=[CH:41][C:36]=2[N:35]([CH3:42])[C:34]1=[O:43].C(=O)([O-])[O-].[K+].[K+].C(OCC)(=O)C>O>[CH3:42][N:35]1[C:36]2[CH:41]=[CH:40][CH:39]=[CH:38][C:37]=2[N:33]([CH2:32][CH2:31][CH2:30][N:9]2[CH2:10][CH2:11][C:6]3([N:5]([C:12]4[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=4)[CH2:4][N:3]([CH2:18][C:19]4[CH:20]=[C:21]([CH:26]=[CH:27][CH:28]=4)[C:22]([O:24][CH3:25])=[O:23])[C:2]3=[O:1])[CH2:7][CH2:8]2)[C:34]1=[O:43]

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 219899771,3-dihydro-1-(3-iodopropyl)-3-methyl-2H-benzimidazol-2-oneHCID 66652852Methyl 3-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

Product 1

HCID 66652256methyl 3-((8-(3-(3-methyl-2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoateYield 78.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
65 °C

Procedure

A mixture of methyl 3-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (400 mg, 0.962 mmol, 1 equiv), 1-(3-iodopropyl)-3-methyl-1H-benzo[d]imidazol-2(3H)-one (304.8 mg, 0.962 mmol, 1 equiv), and potassium carbonate (399 mg, 2.88 mmol, 3 equiv) was heated at 65° C. for 16 h. The reaction was cooled to ambient temperature and worked up using ethyl acetate and water. The organic layer was dried over MgSO4, filtered and concentrated in vacuo. The crude residue was purified using preparatory thin layer chromatography in 5% methanol in dichloromethane to afford the title compound as an oil (427 mg, 78%); 1H NMR (400 MHz, DMSO-d6): δ 1.61 (d, 2H, J=13.2 Hz), 1.85 (t, 2H, J=7.2 and 6.8 Hz); 2.34 (d, 2H, J=6.4 Hz); 2.64-2.66 (m, 2H); 2.89 (s, 3H); 3.843 (s, 3H); 3.91 (t, 2H, J=6.4 and 6.8 Hz); 4.58 (s, 2H); 4.62 (s, 2H); 6.78 (t, 1H, J=7.2 Hz); 6.86 (d, 2H, J=8.8 Hz); 7.01-7.07 (m, 2H); 7.13-7.14 (m, 1H); 7.21-7.26 (m, 3H); 7.52-7.58 (m, 2H); 7.88 (s, 1H); 7.90 (s, 1H); MS for C33H37N5O4 m/z 568.13 (M+H)+.

Workup

  1. temperatureThe reaction was cooled to ambient temperature
  2. dry with materialThe organic layer was dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe crude residue was purified

Sources & evidence

ORD record
ord-3da797564d1f4b1396215bb5e23c2dca
Source dataset
uspto-grants-2015_10
Patent number
US09156840B2

Reaction notes

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