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

HRID 1751032Notes

Reaction equation

HRID 1751032 reaction equation
[O:1]=[C:2]1[C:6]2([CH2:11][CH2:10][NH:9][CH2:8][CH2:7]2)[CH: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][C:40](=O)[CH2:41][C:36]=2[NH:35][C:34]1=[O:43].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[O:1]=[C:2]1[C:6]2([CH2:11][CH2:10][N:9]([CH2:30][CH2:31][CH2:32][N:33]3[C:37]4[CH:38]=[CH:39][CH:40]=[CH:41][C:36]=4[NH:35][C:34]3=[O:43])[CH2:8][CH2:7]2)[CH: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]

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 66652428Methyl 3-((1-oxo-4-phenyl-2,8-diazaspiro[4.5]decan-2-yl)methyl)benzoateHCID 1317312971-(3-iodopropyl)-1,3-dihydro-2H-benzimidazol-2-one-one

Product 1

HCID 66652246methyl 3-((1-oxo-8-(3-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-4-phenyl-2,8-diazaspiro[4.5]decan-2-yl)methyl)benzoateYield 62.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
65 °C

Procedure

A mixture of methyl 3-((1-oxo-4-phenyl-2,8-diazaspiro[4.5]decan-2-yl)methyl)benzoate (500 mg, 1.206 mmol, 1 equiv), 1-(3-iodopropyl)-1,3-dihydro-2H-benzimidazol-2-one-one (364.4 mg, 1.206 mmol, 1 equiv), and potassium carbonate (500 mg, 3.62 mmol, 3 equiv) in N,N-dimethylformamide was stirred at 65° C. for 16 h. After cooling the reaction mixture, the crude mixture was partitioned between ethyl acetate and water. The organic layer was dried over MgSO4, filtered and concentrated in vacuo. The residue was purified using the Biotage flash chromatography system (SNAP 50 g cartridge, Rf=0.4, gradient—10% methanol in dichloromethane) to afford the title compound as a white solid (416 mg, 62%); 1H NMR (400 MHz, DMSO-d6): δ 0.99 (bs, 1H); 1.57-1.59 (m, 2H); 1.67-1.74 (m, 3H); 1.86 (bs, 1H); 2.22-2.39 (m, 4H); 2.73-2.76 (m, 2H); 3.25-3.27 (m, 1H); 3.59-3.62 (m, 1H); 3.76 (t, 2H, J=6.8 Hz); 3.86 (s, 3H); 4.55 (s, 2H); 6.94-6.95 (m, 3H); 7.09-7.11 (m, 3H); 7.20-7.24 (m, 3H); 7.51-7.58 (m, 2H); 7.88-7.90 (m, 2H); 10.77 (s, 1H); MS for C33H36N4O4 m/z 553.11 (M+H)+.

Workup

  1. temperatureAfter cooling the reaction mixture
  2. customthe crude mixture was partitioned between ethyl acetate and water
  3. dry with materialThe organic layer was dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified

Sources & evidence

ORD record
ord-4cdfb1ed394b40a4a3e3898d89a4b40a
Source dataset
uspto-grants-2015_10
Patent number
US09156840B2

Reaction notes

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