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Piperazine → (2S,4S)-1-(4-nitrobenzyloxycarbonyl)-2-(piperazin-1-yl)methyl-4-(triphenylmethylthio)pyrrolidine

HRID 1650821
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1650821
CS(O[CH2:6][C@@H:7]1[CH2:11][C@H:10]([S:12][C:13]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH2:9][N:8]1[C:32]([O:34][CH2:35][C:36]1[CH:41]=[CH:40][C:39]([N+:42]([O-:44])=[O:43])=[CH:38][CH:37]=1)=[O:33])(=O)=O.[NH:45]1[CH2:50][CH2:49][NH:48][CH2:47][CH2:46]1>CN(C)C=O>[N+:42]([C:39]1[CH:38]=[CH:37][C:36]([CH2:35][O:34][C:32]([N:8]2[CH2:9][C@@H:10]([S:12][C:13]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[CH2:11][C@H:7]2[CH2:6][N:45]2[CH2:50][CH2:49][NH:48][CH2:47][CH2:46]2)=[O:33])=[CH:41][CH:40]=1)([O-:44])=[O:43]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

4

Edukt 2

HCID 4837PiperazineHCID 15056119(2S,4S)-2-mesyloxymethyl-N-(p-nitrobenzyloxycarbonyl)-4-tritylthiopyrrolidine

Produkt 1

HCID 15056120(2S,4S)-1-(4-nitrobenzyloxycarbonyl)-2-(piperazin-1-yl)methyl-4-(triphenylmethylthio)pyrrolidineAusbeute 51,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of (2S,4S)-2-(methanesulfonyloxy)methyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidine (5.0 g) in dimethylformamide (90 ml) was added piperazine (2.0 g) and the mixture was stirred at 80°-90° C. for 5 hours. The reaction mixture was poured into ice-water (300 ml) and extracted twice with ethyl acetate (200 ml). The extract was washed with saturated aqueous sodium chloride, dried over magnesium sulfate and evaporated in vacuo. The resulting residue was chromatographed on silica gel (150 g) eluting with a mixture of chloroform and methanol (9:1 V/V). The fractions containing the desired compound were collected and evaporated in vacuo to give (2S,4S)-1-(4-nitrobenzyloxycarbonyl)-2-(piperazin-1-yl)methyl-4-(triphenylmethylthio)pyrrolidine (2.52 g).

Aufarbeitung

  1. extractionextracted twice with ethyl acetate (200 ml)
  2. washThe extract was washed with saturated aqueous sodium chloride
  3. dry with materialdried over magnesium sulfate
  4. customevaporated in vacuo
  5. customThe resulting residue was chromatographed on silica gel (150 g)
  6. washeluting with a mixture of chloroform and methanol (9:1 V/V)
  7. additionThe fractions containing the desired compound
  8. customwere collected
  9. customevaporated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-609b997f11c64b7e84a75590365818a5
Quelldatensatz
uspto-grants-1990_05
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04925838

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