1,1'-Carbonyldiimidazole → 1-Benzyl-N-cyclopropyl-5-oxopyrrolidine-3-carboxamide

HRID 868108Notes

Reaction equation

HRID 868108 reaction equation
[O:1]=[C:2]1[N:6]([CH2:7][C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH2:5][CH:4]([C:14]([OH:16])=O)[CH2:3]1.C(N1C=CN=C1)(N1C=CN=C1)=O.[CH:29]1([NH2:32])[CH2:31][CH2:30]1>C(#N)C>[O:1]=[C:2]1[N:6]([CH2:7][C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH2:5][CH:4]([C:14]([NH:32][CH:29]2[CH2:31][CH2:30]2)=[O:16])[CH2:3]1

Participants

5

Reactant 3

HCID 682631,1'-CarbonyldiimidazoleHCID 69828CyclopropylamineHCID 990241-Benzyl-5-oxo-pyrrolidine-3-carboxylic acid

Product 1

HCID 134918001-Benzyl-N-cyclopropyl-5-oxopyrrolidine-3-carboxamideYield 94.5%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of 16.4 g (75 mmole) of 5-oxo-1-(phenylmethyl)-3-pyrrolidinecarboxylic acid in 150 ml of acetonitrile was added 13.8 g (85 mmole) of 1,1'-carbonyldiimidazole. The reaction was heated to 60° C. for one hour, cooled to room temperature and treated with 4.85 g (85 mmole) of cyclopropylamine. The reaction was stirred at room temperature for 18 hours, the solvent removed in vacuo and the residue partitioned between chloroform and water. The organic layer was washed with water, 1N hydrochloric acid, dried over magnesium sulfate, filtered, and evaporated in vacuo to give 18.3 g of 5-oxo-1-(phenylmethyl)-N-cyclopropyl-3-pyrrolidinecarboxamide, mp 94°-96° C.

Workup

  1. temperaturecooled to room temperature
  2. customthe solvent removed in vacuo
  3. customthe residue partitioned between chloroform and water
  4. washThe organic layer was washed with water, 1N hydrochloric acid
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. customevaporated in vacuo

Sources & evidence

ORD record
ord-a82280f1734143ba80610e231dd314fd
Source dataset
uspto-grants-1988_10
Patent number
US04777175

Reaction notes

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