Acetic Acid → HCID 22980952, Verbindung

HRID 1861948Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1861948
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([N+:9]([O-:11])=[O:10])=[CH:5][C:4]=1[CH2:12][C:13]([OH:15])=[O:14].[C:16]1([C:22]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[N+]=[N-])[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.C(O)(=O)C>C(Cl)Cl>[C:16]1([CH:22]([O:14][C:13](=[O:15])[CH2:12][C:4]2[CH:5]=[C:6]([N+:9]([O-:11])=[O:10])[CH:7]=[CH:8][C:3]=2[O:2][CH3:1])[C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1

Komponenten

5

Edukt 3

HCID 176Acetic AcidHCID 612301,1'-(Diazomethylene)bis(benzene)HCID 35192982-(2-methoxy-5-nitrophenyl)acetic acid

Produkt 1

HCID 22980952HCID 22980952, VerbindungAusbeute 21 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

Using 2-methoxyphenylacetic acid (5.00 g) as a starting material, the same procedure of Example 188 gave 2-methoxy-5-nitrophenylacetic acid. To a solution of the resulting nitro compound in methylene chloride (140 ml), a solution of diphenyldiazomethane in methylene chloride was added at room temperature until the reaction mixture turned purple and then acetic acid was added until the purple color of the reaction mixture disappeared. The reaction mixture was washed successively with a saturated aqueous sodium bicarbonate solution and a saturated aqueous sodium chloride solution, dried with anhydrous sodium sulfate and distilled under reduced pressure. The resulting residue was purified by silica gel column chromatography (eluent, n-hexane:ethyl acetate=3:1) to give 2.34 g of the titled compound (yield, 21%).

Aufarbeitung

  1. washThe reaction mixture was washed successively with a saturated aqueous sodium bicarbonate solution
  2. dry with materiala saturated aqueous sodium chloride solution, dried with anhydrous sodium sulfate
  3. distillationdistilled under reduced pressure
  4. customThe resulting residue was purified by silica gel column chromatography (eluent, n-hexane:ethyl acetate=3:1)

Quellen und Nachweise

ORD-Eintrag
ord-a85ef44b2b48493193d69e45715f0d18
Quelldatensatz
uspto-grants-2003_03
Patentnummer
US06534546B1

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