(2S,4S)-4-(4-Methoxybenzylthio)-2-(1-piperazinyl-carbonyl)-1-(4-nitrobenzyloxycarbonyl)pyrrolidine hydrochloride → (2S,4S)-4-(4-Methoxybenzylthio)-2-[4-(N-4-nitrobenzyloxycarbonylformimidoyl)piperazin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

HRID 362020Notes

Reaction equation

HRID 362020 reaction equation
Cl.[CH3:2][O:3][C:4]1[CH:37]=[CH:36][C:7]([CH2:8][S:9][C@@H:10]2[CH2:14][N:13]([C:15]([O:17][CH2:18][C:19]3[CH:24]=[CH:23][C:22]([N+:25]([O-:27])=[O:26])=[CH:21][CH:20]=3)=[O:16])[C@H:12]([C:28]([N:30]3[CH2:35][CH2:34][NH:33][CH2:32][CH2:31]3)=[O:29])[CH2:11]2)=[CH:6][CH:5]=1.[N+:38]([C:41]1[CH:53]=[CH:52][C:44]([CH2:45][O:46][C:47]([NH:49][CH:50]=N)=[O:48])=[CH:43][CH:42]=1)([O-:40])=[O:39]>C(#N)C>[CH3:2][O:3][C:4]1[CH:5]=[CH:6][C:7]([CH2:8][S:9][C@@H:10]2[CH2:14][N:13]([C:15]([O:17][CH2:18][C:19]3[CH:20]=[CH:21][C:22]([N+:25]([O-:27])=[O:26])=[CH:23][CH:24]=3)=[O:16])[C@H:12]([C:28]([N:30]3[CH2:35][CH2:34][N:33]([CH:50]=[N:49][C:47]([O:46][CH2:45][C:44]4[CH:52]=[CH:53][C:41]([N+:38]([O-:40])=[O:39])=[CH:42][CH:43]=4)=[O:48])[CH2:32][CH2:31]3)=[O:29])[CH2:11]2)=[CH:36][CH:37]=1

Participants

4

Reactant 2

HCID 67585358(2S,4S)-4-(4-Methoxybenzylthio)-2-(1-piperazinyl-carbonyl)-1-(4-nitrobenzyloxycarbonyl)pyrrolidine hydrochlorideHCID 140386401(4-nitrophenyl)methyl N-methanimidoylcarbamate

Product 1

HCID 88299047(2S,4S)-4-(4-Methoxybenzylthio)-2-[4-(N-4-nitrobenzyloxycarbonylformimidoyl)piperazin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidineYield 76%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A suspension of 5.51 g of (2S,4S)-4-(4-methoxy-benzylthio)-2-(1-piperazinylcarbonyl)-1-(4-nitrobenzyl-oxycarbonyl)pyrrolidine hydrochloride [prepared as described in Preparation 1(ii)] and 2.45 g of N-(4-nitrobenzyloxycarbonyl)formamidine in 10 ml of dry acetonitrile was stirred for 2 hours on a water-bath kept at 50° C. At the end of this time, the reaction mixture was freed from impurities by filtration, and the filtrate was concentrated by evaporation under reduced pressure. The resulting residue was purified by column chromatography through silica gel, using a 6:4 by volume mixture of ethyl acetate and acetonitrile as the eluent, to give 5.48 g of the title compound, as a powder.

Workup

  1. customkept at 50° C
  2. filtrationAt the end of this time, the reaction mixture was freed from impurities by filtration
  3. concentrationthe filtrate was concentrated by evaporation under reduced pressure
  4. customThe resulting residue was purified by column chromatography through silica gel
  5. additionby volume mixture of ethyl acetate and acetonitrile as the eluent

Sources & evidence

ORD record
ord-6a5dae6b17df4a58a155872e3ae99c1c
Source dataset
uspto-grants-1999_02
Patent number
US05866564

Reaction notes

Loading…