Urea → 4-(4-dimethylaminophenyl)-2,3dihydro-5-phenyl-1H-imidazol-2-one

HRID 976436

Reaction equation

HRID 976436 reaction equation
[NH2:1][C:2]([NH2:4])=[O:3].[CH3:5][N:6]([CH3:23])[C:7]1[CH:12]=[CH:11][C:10]([CH:13](O)[C:14]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)=O)=[CH:9][CH:8]=1>C(O)(=O)C>[CH3:23][N:6]([CH3:5])[C:7]1[CH:12]=[CH:11][C:10]([C:13]2[NH:1][C:2](=[O:3])[NH:4][C:14]=2[C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)=[CH:9][CH:8]=1

Participants

4

Reactant 2

HCID 1176UreaHCID 5906282-[4-(Dimethylamino)phenyl]-2-hydroxy-1-phenylethanone

Product 1

HCID 540115654-(4-dimethylaminophenyl)-2,3dihydro-5-phenyl-1H-imidazol-2-one

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
120 °C

Procedure

To acetic acid (2 mL) was added urea (0.6 g, 10 mmol) and 2-(4-dimethylaminophenyl)-2-hydroxy-l-phenylethanone (2.6 g, 10 mmol). After stirring for 2 hours at 120° C., the reaction was cooled to ambient temperature. The resulting solid was filtered, washed with ether, and dried in vacuo to give 4-(4-dimethylaminophenyl)-2,3dihydro-5-phenyl-1H-imidazol-2-one; NMR (CDCl3) 10.98 (s,2), 7.5 (m,4), 7.4 (m,5), 3.18 (s,6) ppm.

Workup

  1. temperaturethe reaction was cooled to ambient temperature
  2. filtrationThe resulting solid was filtered
  3. washwashed with ether
  4. customdried in vacuo

Sources & evidence

ORD record
ord-219ca01c6aa34c96b0d0805e3451899c
Source dataset
uspto-grants-1997_03
Patent number
US05612363

Linked notes

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