(3S)-(-)-3-Aminopyrrolidine → (2S,4S)-4-(4-Methoxybenzylthio)-2-[(3S)-3-aminopyrrolidin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

HRID 362037Notes

Reaction equation

HRID 362037 reaction equation
[CH3:1][O:2][C:3]1[CH:31]=[CH:30][C:6]([CH2:7][S:8][C@@H:9]2[CH2:13][N:12]([C:14]([O:16][CH2:17][C:18]3[CH:23]=[CH:22][C:21]([N+:24]([O-:26])=[O:25])=[CH:20][CH:19]=3)=[O:15])[C@H:11]([C:27](O)=[O:28])[CH2:10]2)=[CH:5][CH:4]=1.[NH2:32][C@H:33]1[CH2:37][CH2:36][NH:35][CH2:34]1>C(#N)C>[CH3:1][O:2][C:3]1[CH:31]=[CH:30][C:6]([CH2:7][S:8][C@@H:9]2[CH2:13][N:12]([C:14]([O:16][CH2:17][C:18]3[CH:23]=[CH:22][C:21]([N+:24]([O-:26])=[O:25])=[CH:20][CH:19]=3)=[O:15])[C@H:11]([C:27]([N:35]3[CH2:36][CH2:37][C@H:33]([NH2:32])[CH2:34]3)=[O:28])[CH2:10]2)=[CH:5][CH:4]=1

Participants

4

Reactant 2

HCID 1519351(3S)-(-)-3-AminopyrrolidineHCID 15297071(2S,4S)-4-(4-methoxybenzyl)thio-1-(4-nitrobenzyloxycarbonyl)-L-proline

Product 1

HCID 67586148(2S,4S)-4-(4-Methoxybenzylthio)-2-[(3S)-3-aminopyrrolidin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidineYield 53.1%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent2×

Procedure

2.92 g of N,N'-carbonyldiimidazole were added to a solution of 6.70 g of (2S,4S)-4-(4-methoxybenzylthio)-1-(4-nitrobenzyloxycarbonyl)-2-pyrrolidinecarboxylic acid in 50 ml of dry acetonitrile, and the resulting mixture was stirred at room temperature for 1 hour. A solution of 1.55 g of (3S)-3-aminopyrrolidine in 10 ml of dry acetonitrile was then added to the mixture, whilst ice-cooling, and the mixture was stirred at room temperature for 1 hour. At the end of this time, the reaction mixture was freed from the solvent by distillation under reduced pressure, and the residue was diluted with ethyl acetate. The diluted solution was washed with water and with an aqueous solution of sodium chloride, in that order, after which it was dried over anhydrous magnesium sulfate. The solvent was then removed by distillation under reduced pressure, and the resulting residue was purified by column chromatography through silica gel, using a 1:1 by volume mixture of ethyl acetate and methanol as the eluent, to give 4.10 g of the title compound, as a powder.

Workup

  1. temperaturecooling
  2. stirringthe mixture was stirred at room temperature for 1 hour
  3. distillationAt the end of this time, the reaction mixture was freed from the solvent by distillation under reduced pressure
  4. additionthe residue was diluted with ethyl acetate
  5. washThe diluted solution was washed with water and with an aqueous solution of sodium chloride, in that order
  6. dry with materialafter which it was dried over anhydrous magnesium sulfate
  7. customThe solvent was then removed by distillation under reduced pressure
  8. customthe resulting residue was purified by column chromatography through silica gel
  9. additionby volume mixture of ethyl acetate and methanol as the eluent

Sources & evidence

ORD record
ord-e4756648ba2448398265594bedff7e15
Source dataset
uspto-grants-1999_02
Patent number
US05866564

Reaction notes

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