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(NE,R)-N-[(3-bromophenyl)methylidene]-2-methylpropane-2-sulfinamide → (R)-N-((R)-(3-bromophenyl)(phenyl)methyl)-2-methylpropane-2-sulfinamide

HRID 1525281
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1525281
[Br:1][C:2]1[CH:3]=[C:4]([CH:13]=[CH:14][CH:15]=1)/[CH:5]=[N:6]/[S@@:7]([C:9]([CH3:12])([CH3:11])[CH3:10])=[O:8].[Li][C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1>C1COCC1>[Br:1][C:2]1[CH:3]=[C:4]([C@@H:5]([C:17]2[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=2)[NH:6][S@@:7]([C:9]([CH3:11])([CH3:12])[CH3:10])=[O:8])[CH:13]=[CH:14][CH:15]=1
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Komponenten

4

Edukt 2

HCID 45103201(NE,R)-N-[(3-bromophenyl)methylidene]-2-methylpropane-2-sulfinamide2×HCID 178506676HCID 178506676, Verbindung

Produkt 1

HCID 89462594(R)-N-((R)-(3-bromophenyl)(phenyl)methyl)-2-methylpropane-2-sulfinamideAusbeute 77 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

(R,E)-N-(3-bromobenzylidene)-2-methylpropane-2-sulfinamide, 24-b, (12 g, 41.64 mmol) was dissolved in anhydrous THF (120 ml). The mixture was then cooled to −78° C. and PhLi (41 ml, 83.28 mmol) was added dropwise. After addition the mixture was allowed to stir at −78° C. for additional 2 h and warmed to room temperature for another 2 h. The mixture was quenched with saturated NH4Cl followed by extraction with ethyl acetate. The organic layer was dried over sodium sulfate and concentrated under vacuum. The residue was purified by column chromatography (petroleum ether/ethyl acetate=5/1) to provide the product, 24-c, (11.8 g, 77%). HPLC indicated that the diastereomer ratio is 90:10 and the product was used for the next step directly.

Aufarbeitung

  1. additionAfter addition the mixture
  2. temperaturewarmed to room temperature for another 2 h
  3. customThe mixture was quenched with saturated NH4Cl
  4. extractionfollowed by extraction with ethyl acetate
  5. dry with materialThe organic layer was dried over sodium sulfate
  6. concentrationconcentrated under vacuum
  7. customThe residue was purified by column chromatography (petroleum ether/ethyl acetate=5/1)

Quellen und Nachweise

ORD-Eintrag
ord-65e80758b45543f4ac69b14abb8b8dcf
Quelldatensatz
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09079930B2

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