Propargyl bromide → 3-[4-chloro-2-fluoro-5-[(2-propynyl)-oxy]phenyl]-1-methyl-6-(trifluoromethyl)-2,4(1H, 3H)-pyrimidinedione

HRID 1450159Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1450159
[Cl:1][C:2]1[C:7]([OH:8])=[CH:6][C:5]([N:9]2[C:14](=[O:15])[CH:13]=[C:12]([C:16]([F:19])([F:18])[F:17])[N:11]([CH3:20])[C:10]2=[O:21])=[C:4]([F:22])[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:29](Br)[C:30]#[CH:31]>C(#N)C.C1(C)C=CC=CC=1>[Cl:1][C:2]1[C:7]([O:8][CH2:31][C:30]#[CH:29])=[CH:6][C:5]([N:9]2[C:14](=[O:15])[CH:13]=[C:12]([C:16]([F:18])([F:17])[F:19])[N:11]([CH3:20])[C:10]2=[O:21])=[C:4]([F:22])[CH:3]=1

Komponenten

6

Edukt 3

HCID 7842Propargyl bromideHCID 11430Potassium CarbonateHCID 112677571-methyl-6-trifluoromethyl-3-(4-chloro-2-fluoro-5-hydroxyphenyl)-2,4(1H,3H)-pyrimidinedione

Produkt 1

HCID 199752553-[4-chloro-2-fluoro-5-[(2-propynyl)-oxy]phenyl]-1-methyl-6-(trifluoromethyl)-2,4(1H, 3H)-pyrimidinedione

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 1140TolueneLösungsmittelHCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

To a solution of 200 mg (0.59 mmol) of 3-[4-chloro-2-fluoro-5-(hydroxy)phenyl]-1-methyl-6- (trifluoromethyl)-2,4 (1H,3H) -pyrimidinedione in 3 mL of acetonitrile was added 162 mg of potassium carbonate (1.18 mmol) and 131 mL (1.18 mmol) of an 80% solution of propargyl bromide in toluene. It was warmed under reflux for 2 h. The resulting mixture was filtered and the filtrate was concentrated in vacuo to give colorless oil which was flash chromatographed over silica gel, eluting with a 1:4 v:v mixture of ethyl acetate and hexane to give 204 mg of title compound as a white foam: 1H-NMR (CDCl3, 200 MHz) ppm 7.35 (d, 1H), 7.0 (d, 1H), 6.4 (s, 1H), 4.78 (d, 2H), 3.58 (s, 3H), 2.6 (d, 1H).

Aufarbeitung

  1. temperatureIt was warmed
  2. temperatureunder reflux for 2 h
  3. filtrationThe resulting mixture was filtered
  4. concentrationthe filtrate was concentrated in vacuo
  5. customto give colorless oil which
  6. customchromatographed over silica gel
  7. washeluting with a 1:4 v
  8. additionv mixture of ethyl acetate and hexane

Quellen und Nachweise

ORD-Eintrag
ord-e4489eb1e791451e988e8fd12bcb3265
Quelldatensatz
uspto-grants-1997_02
Patentnummer
US05602077

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