Water → 4-formyl-3-hydroxy-8-methoxy-1,9-dimethyl-11-oxo-11H-dibenzo[b,e][1,4]dioxepine-6-carboxylic acid methyl ester

HRID 1692625Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1692625
[CH3:1][C:2]1[C:7]2[C:8]([O:10][C:11]3[C:12]([CH3:23])=[C:13]([O:21][CH3:22])[CH:14]=[C:15]([C:18]([OH:20])=[O:19])[C:16]=3[O:17][C:6]=2[C:5]([CH:24]=[O:25])=[C:4]([OH:26])[CH:3]=1)=[O:9].[CH3:27]I.O>CN(C=O)C>[CH3:27][O:19][C:18]([C:15]1[C:16]2[O:17][C:6]3[C:5]([CH:24]=[O:25])=[C:4]([OH:26])[CH:3]=[C:2]([CH3:1])[C:7]=3[C:8](=[O:9])[O:10][C:11]=2[C:12]([CH3:23])=[C:13]([O:21][CH3:22])[CH:14]=1)=[O:20]

Komponenten

5

Edukt 3

HCID 962WaterHCID 6328Methyl iodideHCID 23725Psoromic Acid

Produkt 1

HCID 148259704-formyl-3-hydroxy-8-methoxy-1,9-dimethyl-11-oxo-11H-dibenzo[b,e][1,4]dioxepine-6-carboxylic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

Psoromic acid (1 mmol) was dissolved in DMF (10 mL), KHCO3 (2.4 mmol) was added and stirred for several minutes at room temperature. Then, CH3I (1.2 mmol) was added. The reaction mixture was maintained at 40° C. and monitored by TLC. Upon completion, the reaction mixture was poured into 50 mL of water and extracted with ethyl acetate. The organic layer was subsequently washed with saturated NaHCO3 solution and saturated brine, and dried over anhydrous MgSO4, filtered and evaporated by a rotatory evaporator. The residue was purified by column chromatography to provide a white solid product.

Aufarbeitung

  1. temperatureThe reaction mixture was maintained at 40° C.
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was subsequently washed with saturated NaHCO3 solution and saturated brine
  4. dry with materialdried over anhydrous MgSO4
  5. filtrationfiltered
  6. customevaporated by a rotatory evaporator
  7. customThe residue was purified by column chromatography
  8. customto provide a white solid product

Quellen und Nachweise

ORD-Eintrag
ord-9bb8f884ad5b4a54a0d30e43bbe4eaed
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08158623B2

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