Allyl Alcohol → 2-Cyclopropyl-7-(1-hydroxymethylvinyl)-5-methyl-6-phenyl-1,3-benzoxazole-4-carbonitrile

HRID 17617

Reaktionsgleichung

Reaktionsgleichung von HRID 17617
FC(F)(F)S(O[C:7]1[C:15]2[O:14][C:13]([CH:16]3[CH2:18][CH2:17]3)=[N:12][C:11]=2[C:10]([C:19]#[N:20])=[C:9]([CH3:21])[C:8]=1[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)(=O)=O.C(N(CC)CC)C.[CH2:37]([OH:40])[CH:38]=[CH2:39]>CN(C)C=O.C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2].C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH:16]1([C:13]2[O:14][C:15]3[C:11](=[C:10]([C:19]#[N:20])[C:9]([CH3:21])=[C:8]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=4)[C:7]=3[C:38]([CH2:37][OH:40])=[CH2:39])[N:12]=2)[CH2:17][CH2:18]1

Komponenten

7

Edukt 3

HCID 7858Allyl AlcoholHCID 8471TriethylamineHCID 866308844-Cyano-2-cyclopropyl-5-methyl-6-phenyl-1,3-benzoxazol-7-yl trifluoromethanesulfonate

Produkt 1

HCID 685846992-Cyclopropyl-7-(1-hydroxymethylvinyl)-5-methyl-6-phenyl-1,3-benzoxazole-4-carbonitrileAusbeute 32,5 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 167845palladium(II) acetateKatalysatorHCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)KatalysatorHCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

4-Cyano-2-cyclopropyl-5-methyl-6-phenyl-1,3-benzoxazol-7-yl trifluoromethanesulfonate (I-323) (760 mg, 1.80 mmol) was dissolved in dimethylformamide (10 ml), then triethylamine (276 μl, 1.98 mmol), allyl alcohol (209 mg, 3.60 mmol), 1,1′-bis(diphenylphosphino)ferrocene (79.8 mg, 0.144 mmol) and palladium(II) acetate (24.2 mg, 0.108 mmol) were added, followed by stirring in an oil bath at 100° C. under argon atmosphere for 16 hours. The reaction liquid was concentrated under reduced pressure, the residue was dissolved in ethyl acetate, washed with water and saturated brine. After drying over anhydrous sodium sulfate, the insoluble matter was separated by filtration, and the residue obtained by concentration was purified by silica gel column chromatography (eluent, n-hexane:ethyl acetate=1:1, v/v) to obtain the entitled compound (193 mg, 32%) as a colorless oily substance.

Aufarbeitung

  1. customThe reaction liquid
  2. concentrationwas concentrated under reduced pressure
  3. dissolutionthe residue was dissolved in ethyl acetate
  4. washwashed with water and saturated brine
  5. dry with materialAfter drying over anhydrous sodium sulfate
  6. customthe insoluble matter was separated by filtration
  7. customthe residue obtained by concentration
  8. customwas purified by silica gel column chromatography (eluent, n-hexane

Quellen und Nachweise

ORD-Eintrag
ord-fcdca3eeee61483893e9bc63ac311015
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07737166B2

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