Sodium Carbonate → 8-[3-(1,3-dihydro-3-methyl-2-oxo-2H-benzimidazol-1-yl)propyl]-1-phenyl-1,3,8-triazaspiro[4,5]-decan-4-one

HRID 46875

Reaction equation

HRID 46875 reaction equation
I[CH2:2][CH2:3][CH2:4][N:5]1[C:9]2[CH:10]=[CH:11][CH:12]=[CH:13][C:8]=2[N:7]([CH3:14])[C:6]1=[O:15].[C:16]1([N:22]2[C:26]3([CH2:31][CH2:30][NH:29][CH2:28][CH2:27]3)[C:25](=[O:32])[NH:24][CH2:23]2)[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.C(=O)([O-])[O-].[Na+].[Na+]>CN(C)C=O>[CH3:14][N:7]1[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=2[N:5]([CH2:4][CH2:3][CH2:2][N:29]2[CH2:28][CH2:27][C:26]3([N:22]([C:16]4[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=4)[CH2:23][NH:24][C:25]3=[O:32])[CH2:31][CH2:30]2)[C:6]1=[O:15]

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 705561-Phenyl-1,3,8-triazaspiro(4.5)decan-4-oneHCID 219899771,3-dihydro-1-(3-iodopropyl)-3-methyl-2H-benzimidazol-2-one

Product 1

HCID 203856168-[3-(1,3-dihydro-3-methyl-2-oxo-2H-benzimidazol-1-yl)propyl]-1-phenyl-1,3,8-triazaspiro[4,5]-decan-4-one

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
70 °C

Procedure

A mixture of 5 parts of 1,3-dihydro-1-(3-iodopropyl)-3-methyl-2H-benzimidazol-2-one, 3,4 parts of 1-phenyl-1,3,8-triazaspiro[4,5]decan-4-one, 2.65 parts of sodium carbonate and 22.5 parts of N,N-dimethylformamide is stirred and heated for 2 hours at 70° C. The reaction mixture is cooled and poured onto water, whereupon an oily precipitate is formed. The supernatant aqueous phase is decanted and the residual oil is dissolved in trichloromethane. The solution is dried, filtered and evaporated. The residue is purified by column-chromatography over silica gel using a mixture of trichloromethane and 5% of methanol as eluent. The pure fractions are collected and the eluent is evaporated, yielding 1 part of 8-[3-(1,3-dihydro-3-methyl-2-oxo-2H-benzimidazol-1-yl)propyl]-1-phenyl-1,3,8-triazaspiro[4,5]decan-4-one; mp. 164.4° C.

Workup

  1. temperatureThe reaction mixture is cooled
  2. additionpoured onto water, whereupon an oily precipitate
  3. customis formed
  4. customThe supernatant aqueous phase is decanted
  5. dissolutionthe residual oil is dissolved in trichloromethane
  6. customThe solution is dried
  7. filtrationfiltered
  8. customevaporated
  9. customThe residue is purified by column-chromatography over silica gel using
  10. additiona mixture of trichloromethane and 5% of methanol as eluent
  11. customThe pure fractions are collected
  12. customthe eluent is evaporated

Sources & evidence

ORD record
ord-c010777099d346398c7f5c64b50f7d0d
Source dataset
uspto-grants-1979_11
Patent number
US04175129

Linked notes

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