Propargyl bromide → HCID 14695612, Verbindung

HRID 703692Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 703692
[F:1][C:2]1[CH:7]=[C:6]([Cl:8])[C:5]([OH:9])=[CH:4][C:3]=1[N:10]1[C:14](=[O:15])[C:13](=[C:16]([CH3:18])[CH3:17])[O:12][C:11]1=[O:19].C(=O)([O-])[O-].[Na+].[Na+].[CH2:26](Br)[C:27]#[CH:28]>C(#N)C>[F:1][C:2]1[CH:7]=[C:6]([Cl:8])[C:5]([O:9][CH2:28][C:27]#[CH:26])=[CH:4][C:3]=1[N:10]1[C:14](=[O:15])[C:13](=[C:16]([CH3:17])[CH3:18])[O:12][C:11]1=[O:19]

Komponenten

5

Edukt 3

HCID 7842Propargyl bromideHCID 10340Sodium CarbonateHCID 14695585HCID 14695585, Verbindung

Produkt 1

HCID 14695612HCID 14695612, VerbindungAusbeute 65 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

To an acetonitrile solution (30 ml) of 3-(2'-fluoro-4'-chloro-5'-hydroxyphenyl)-5-isopropylidene-1,3-oxazolidine-2,4-dione (0.72 g, 2.5 mmol) was added sodium carbonate (0.16 g), and the mixture was heated at reflux for 1 hour. After the addition of propargyl bromide (0.36 g, 3.0 mmol), the reaction mixture was further refluxed for 1 hour. After the solution was quenched with 0.1N hdyrochloric acid, the product was extracted with chloroform. The extracts combined were dried and evaporated as small a volume as possible. The resulting pale yellow oil was purified by silica gel column chromatography to give pure 3-(2'-fluoro-4'-chloro-5'-propargyloxyphenyl)-5-isopropylidene-1,3-oxazolidine-2,4-dione. (0.53 g, 65% yield).

Aufarbeitung

  1. temperaturethe mixture was heated
  2. temperatureat reflux for 1 hour
  3. temperaturethe reaction mixture was further refluxed for 1 hour
  4. customAfter the solution was quenched with 0.1N hdyrochloric acid
  5. extractionthe product was extracted with chloroform
  6. customThe extracts combined were dried
  7. customevaporated as small a volume as possible
  8. customThe resulting pale yellow oil was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-6eac2ddc3eb24808b337153d5d775f9c
Quelldatensatz
uspto-grants-1991_01
Patentnummer
US04983751

Notizen zur Reaktion

Wird geladen…