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N,N'-Dimethylethylenediamine → 3-{4-[4-(3,5-Dimethylpyridin-2-yl)piperazine-1-carbonyl]-3-methylphenyl}-1-(4-methoxybenzyl)-4,4-dimethylimidazolidin-2-one

HRID 2411856
Notes
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Reaction equation

HRID 2411856 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]([N:10]2[CH2:15][CH2:14][N:13]([C:16]3[C:21]([CH3:22])=[CH:20][C:19]([CH3:23])=[CH:18][N:17]=3)[CH2:12][CH2:11]2)=[O:9])=[C:4]([CH3:24])[CH:3]=1.[CH3:25][O:26][C:27]1[CH:41]=[CH:40][C:30]([CH2:31][N:32]2[CH2:36][C:35]([CH3:38])([CH3:37])[NH:34][C:33]2=[O:39])=[CH:29][CH:28]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CNCCNC>[Cu]I.O.C1(C)C=CC=CC=1>[CH3:22][C:21]1[C:16]([N:13]2[CH2:14][CH2:15][N:10]([C:8]([C:5]3[CH:6]=[CH:7][C:2]([N:34]4[C:35]([CH3:38])([CH3:37])[CH2:36][N:32]([CH2:31][C:30]5[CH:40]=[CH:41][C:27]([O:26][CH3:25])=[CH:28][CH:29]=5)[C:33]4=[O:39])=[CH:3][C:4]=3[CH3:24])=[O:9])[CH2:11][CH2:12]2)=[N:17][CH:18]=[C:19]([CH3:23])[CH:20]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 8070N,N'-DimethylethylenediamineHCID 10796Cesium carbonateHCID 58484835(4-Bromo-2-methylphenyl)[4-(3,5-dimethylpyridin-2-yl)piperazin-1-yl]methanoneHCID 712526731-(4-Methoxybenzyl)-4,4-dimethylimidazolidin-2-one

Product 1

HCID 712522783-{4-[4-(3,5-Dimethylpyridin-2-yl)piperazine-1-carbonyl]-3-methylphenyl}-1-(4-methoxybenzyl)-4,4-dimethylimidazolidin-2-one

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

To a mixture of (4-bromo-2-methylphenyl)[4-(3,5-dimethylpyridin-2-yl)piperazin-1-yl]methanone (155 mg) described in Preparation Example 118, 1-(4-methoxybenzyl)-4,4-dimethylimidazolidin-2-one (112 mg) described in Preparation Example 54, cesium carbonate (261 mg) and copper(I) iodide (76 mg) were added toluene (10 mL) and N,N′-dimethylethylenediamine (86 μL), and the mixture was stirred with heating under reflux for 19 hr. The reaction mixture was cooled, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over sodium sulfate, and the solvent was evaporated. The obtained residue was purified by column chromatography (hexane:ethyl acetate) to give 3-{4-[4-(3,5-dimethylpyridin-2-yl)piperazine-1-carbonyl]-3-methylphenyl}-1-(4-methoxybenzyl)-4,4-dimethylimidazolidin-2-one. The obtained 3-{4-[4-(3,5-dimethylpyridin-2-yl)piperazine-1-carbonyl]-3-methylphenyl}-1-(4-methoxybenzyl)-4,4-dimethylimidazolidin-2-one was dissolved in trifluoroacetic acid (3 mL), and the mixture was stirred at room temperature for 22 hr. The solvent was evaporated from the reaction mixture, and 5% aqueous sodium hydrogen carbonate solution was added to the residue, and the mixture was extracted with chloroform/methanol (10:1). The organic layer was dried over sodium sulfate, and the solvent was evaporated. The obtained residue was purified by silica gel column chromatography (ethyl acetate:methanol) to give the title compound (74 mg).

Workup

  1. temperaturewith heating
  2. temperatureunder reflux for 19 hr
  3. temperatureThe reaction mixture was cooled
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried over sodium sulfate
  7. customthe solvent was evaporated
  8. customThe obtained residue was purified by column chromatography (hexane:ethyl acetate)

Sources & evidence

ORD record
ord-b78e767d9eb84f45bc13a9ae1e579f62
Source dataset
uspto-grants-2014_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08816079B2

Reaction notes

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