Trifluoroacetic acid → (2S,4S)-4-Mercapto-2-{4-[2-(4-nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-1-(4-nitrobenzyloxycarbonyl)pyrrolidine bis(trifluoromethanesulfonate)

HRID 1033681Notes

Reaction equation

HRID 1033681 reaction equation
FC(F)(F)C(O)=O.[F:8][C:9]([F:15])([F:14])[S:10]([OH:13])(=[O:12])=[O:11].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]([N:44]3[CH2:49][CH2:48][N:47]([CH2:50][CH2:51][O:52][C:53]([O:55][CH2:56][C:57]4[CH:62]=[CH:61][C:60]([N+:63]([O-:65])=[O:64])=[CH:59][CH:58]=4)=[O:54])[CH2:46][CH2:45]3)=[O:43])[CH2:25]2)=CC=1>C1(OC)C=CC=CC=1>[F:8][C:9]([F:15])([F:14])[S:10]([OH:13])(=[O:12])=[O:11].[F:8][C:9]([F:15])([F:14])[S:10]([OH:13])(=[O:12])=[O:11].[SH:23][C@@H:24]1[CH2:28][N:27]([C:29]([O:31][CH2:32][C:33]2[CH:34]=[CH:35][C:36]([N+:39]([O-:41])=[O:40])=[CH:37][CH:38]=2)=[O:30])[C@H:26]([C:42]([N:44]2[CH2:45][CH2:46][N:47]([CH2:50][CH2:51][O:52][C:53]([O:55][CH2:56][C:57]3[CH:58]=[CH:59][C:60]([N+:63]([O-:65])=[O:64])=[CH:61][CH:62]=3)=[O:54])[CH2:48][CH2:49]2)=[O:43])[CH2:25]1

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 62406Trifluoromethanesulfonic acidHCID 57120790(2S,4S)-2-{4-[2-(4-Nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-4-(4-methoxybenzylthio)-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

Product 1

HCID 86747844(2S,4S)-4-Mercapto-2-{4-[2-(4-nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-1-(4-nitrobenzyloxycarbonyl)pyrrolidine bis(trifluoromethanesulfonate)

Reagents, catalysts & solvents 1

HCID 7519AnisoleSolvent

Procedure

135.75 mg of trifluoroacetic acid and 6.18 ml of trifluoromethanesulfonic acid were added, whilst ice-cooling, to a solution of 26.00 g of (2S,4S)-4-(4-methoxybenzylthio)-2-{4-[2-(4-nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-1-(4-nitrobenzyloxycarbonyl)pyrrolidine (prepared as described in Preparation 14) in 38.8 ml of anisole, and the resulting mixture was stirred at the same temperature for 1.5 hours. At the end of this time, the solvent was removed by distillation under reduced pressure, and the resulting residue was washed with diethyl ether by repeated decantation and dried under reduced pressure to give 32.5 g of the title compound as a powder.

Workup

  1. customAt the end of this time, the solvent was removed by distillation under reduced pressure
  2. washthe resulting residue was washed with diethyl ether by repeated decantation
  3. customdried under reduced pressure

Sources & evidence

ORD record
ord-4d3e7a9e072a4e519b144b23315764d0
Source dataset
uspto-grants-1994_05
Patent number
US05310735

Reaction notes

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