Trifluoroacetic acid → HCID 86751997, compound

HRID 362034Notes

Reaction equation

HRID 362034 reaction equation
FC(F)(F)C(O)=O.FC(F)(F)S(O)(=O)=O.COC1C=CC(C[S:23][C@@H:24]2[CH2:28][N:27]([C:29]([O:31][CH2:32][C:33]3[CH:38]=[CH:37][C:36]([N+:39]([O-:41])=[O:40])=[CH:35][CH:34]=3)=[O:30])[C@H:26]([C:42]([NH:44][C@H:45]3[CH2:49][CH2:48][N:47]([C:50]([O:52][CH2:53][C:54]4[CH:59]=[CH:58][C:57]([N+:60]([O-:62])=[O:61])=[CH:56][CH:55]=4)=[O:51])[CH2:46]3)=[O:43])[CH2:25]2)=CC=1>C1(OC)C=CC=CC=1>[SH:23][C@@H:24]1[CH2:28][N:27]([C:29]([O:31][CH2:32][C:33]2[CH:38]=[CH:37][C:36]([N+:39]([O-:41])=[O:40])=[CH:35][CH:34]=2)=[O:30])[C@H:26]([C:42]([NH:44][C@H:45]2[CH2:49][CH2:48][N:47]([C:50]([O:52][CH2:53][C:54]3[CH:55]=[CH:56][C:57]([N+:60]([O-:62])=[O:61])=[CH:58][CH:59]=3)=[O:51])[CH2:46]2)=[O:43])[CH2:25]1

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 62406Trifluoromethanesulfonic acidHCID 86751996HCID 86751996, compound

Product 1

HCID 86751997HCID 86751997, compoundYield 136.2%

Reagents, catalysts & solvents 1

HCID 7519AnisoleSolvent

Procedure

6.5 ml of trifluoroacetic acid and 0.21 ml of trifluoromethanesulfonic acid were added to a suspension of 835 mg of (2S,4S)-4-(4-methoxybenzylthio)-2-[(3S)-1-(4-nitrobenzyloxycarbonyl)pyrrolidin-3-ylaminocarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidine [prepared as described in step (iii) above] in 1.3 ml of anisole, whilst ice-cooling, and the resulting mixture was stirred at room temperature for 1 hour. At the end of this time, the solvent was removed by distillation under reduced pressure, and the resulting residue was first washed with hexane to remove the anisole and then mixed with diethyl ether. The mixture was cooled to -78° C., and the solidified product was broken up and separated by decantation. Several repetitions of this procedure yielded 940 mg of the title compound as a powder.

Workup

  1. temperaturecooling
  2. customAt the end of this time, the solvent was removed by distillation under reduced pressure
  3. washthe resulting residue was first washed with hexane
  4. customto remove the anisole
  5. additionmixed with diethyl ether
  6. temperatureThe mixture was cooled to -78° C.
  7. customseparated by decantation

Sources & evidence

ORD record
ord-978a806de17b4aa38d07eb339dbeb0b5
Source dataset
uspto-grants-1999_02
Patent number
US05866564

Reaction notes

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