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Benzyl Bromide → HCID 58537922, Verbindung

HRID 570094
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 570094
[OH:1][C:2]1[C:6]2([CH2:11][CH2:10][N:9]([O:12][CH3:13])[CH2:8][CH2:7]2)[NH:5][C:4](=[O:14])[C:3]=1[C:15]1[C:20]([CH3:21])=[CH:19][C:18]([CH3:22])=[CH:17][C:16]=1[CH3:23].C(=O)([O-])[O-].[K+].[K+].[CH2:30](Br)[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1.C(OCC)(=O)C>CC(C)=O>[CH2:30]([O:1][C:2]1[C:6]2([CH2:11][CH2:10][N:9]([O:12][CH3:13])[CH2:8][CH2:7]2)[NH:5][C:4](=[O:14])[C:3]=1[C:15]1[C:20]([CH3:21])=[CH:19][C:18]([CH3:22])=[CH:17][C:16]=1[CH3:23])[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 7498Benzyl BromideHCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 59614602HCID 59614602, Verbindung

Produkt 1

HCID 58537922HCID 58537922, VerbindungAusbeute 64,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180
Acetone
Lösungsmittel

Versuchsvorschrift

To a suspension of 4-hydroxy-8-methoxy-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-2-one [prepared according to WO09/049851] (67.0 g, 211.7 mmol) in acetone (900 ml) was added potassium carbonate (35.1 g, 254.1 mmol), followed by benzyl bromide (35.3 ml, 50.7 g, 296.4 mmol) dropewise. The suspension was stirred at reflux for one hour, then poured on ice water and ethyl acetate. The resulting precipitate was filtered off, dissolved in methylene chloride, dried over sodium sulfate, concentrated and dried over phosphorus pentoxide under vacuum at 50° C. overnight to afford a first crop of product as a white solid (55.8 g). The layers of the mother liquor were separated, the aqueous phase extracted with ethyl acetate, the combined organic phases washed with brine, dried over sodium sulfate and concentrated. The residue was suspended in diethyl ether, filtered and dried to further deliver 22.6 g of product. Yield: 78.4 g of 4-benzyloxy-8-methoxy-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-2-one (compound P3.4) as a solid, mp 184-186° C.

Aufarbeitung

  1. temperatureat reflux for one hour
  2. filtrationThe resulting precipitate was filtered off
  3. dissolutiondissolved in methylene chloride
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated
  6. dry with materialdried over phosphorus pentoxide under vacuum at 50° C. overnight

Quellen und Nachweise

ORD-Eintrag
ord-dd32120ac010435f8eab67e33df7f6f6
Quelldatensatz
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09023760B2

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