Pyridine → 7-furyl-3-methyl-4-chromanone O-(toluenesulfonyl)-oxime

HRID 1059670Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1059670
[C:1]1([CH3:11])[C:2]([S:7](Cl)(=[O:9])=[O:8])=[CH:3][CH:4]=[CH:5][CH:6]=1.[O:12]1[CH:16]=[CH:15][CH:14]=[C:13]1[C:17]1[CH:26]=[C:25]2[C:20]([C:21](=[N:28][OH:29])[CH:22]([CH3:27])[CH2:23][O:24]2)=[CH:19][CH:18]=1.N1C=CC=CC=1>C(Cl)Cl>[C:1]1([CH3:11])[C:2]([S:7]([O:29][N:28]=[C:21]2[C:20]3[C:25](=[CH:26][C:17]([C:13]4[O:12][CH:16]=[CH:15][CH:14]=4)=[CH:18][CH:19]=3)[O:24][CH2:23][CH:22]2[CH3:27])(=[O:9])=[O:8])=[CH:3][CH:4]=[CH:5][CH:6]=1

Komponenten

5

Edukt 3

HCID 1049PyridineHCID 8623o-Toluenesulfonyl chlorideHCID 73868111HCID 73868111, Verbindung

Produkt 1

HCID 865864777-furyl-3-methyl-4-chromanone O-(toluenesulfonyl)-oximeAusbeute 57,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

Toluenesulfonyl chloride (397 mg, 2.08 mmol) was added to a 0° C. solution of 7-furyl-3-methyl-4-chromanone oxime (61) (461 mg, 1.89 mmol) and pyridine (0.5 mL) in CH2Cl2 (10 mL). After 6 hours, the mixture was diluted with CH2Cl2 (30 mL) and washed with 59 HCl (20 mL). The organic layer was dried over MgSO4, filtered and concentrated. The residue was purified via flash chromatography using 5:1 hexanes:EtOAc as the eluent, to provide 7-furyl-3-methyl-4-chromanone O-(toluenesulfonyl)-oxime (62) (429 mg) as a pink solid, m.p. 163-164° C. (dec).

Aufarbeitung

  1. washwashed with 59 HCl (20 mL)
  2. dry with materialThe organic layer was dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified via flash chromatography

Quellen und Nachweise

ORD-Eintrag
ord-74bc0f9d401c43f09f1c547d4dd0a731
Quelldatensatz
uspto-grants-2003_02
Patentnummer
US06521622B1

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