Acetic Anhydride → Ethyl 2-acetoxy-5-benzylideneaminobenzoate

HRID 2107015Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2107015
[OH:1][C:2]1[CH:12]=[CH:11][C:10]([N:13]=[CH:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:9][C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5].[C:21](OC(=O)C)(=[O:23])[CH3:22]>N1C=CC=CC=1>[C:21]([O:1][C:2]1[CH:12]=[CH:11][C:10]([N:13]=[CH:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:9][C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5])(=[O:23])[CH3:22]

Komponenten

4

Edukt 2

HCID 7918Acetic AnhydrideHCID 23047228Ethyl 2-hydroxy-5-benzylideneaminobenzoate

Produkt 1

HCID 23047223Ethyl 2-acetoxy-5-benzylideneaminobenzoateAusbeute 73 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

Ethyl 2-hydroxy-5-benzylideneaminobenzoate (21 g, 78 mmole) was dissolved in pyridine (60 ml) and acetic anhydride (8.9 ml) was added after which the reaction mixture was kept at room temperature for 48 hours, evaporated to dryness in vacuo, and the residue recrystallized from hexane to give the title compound (17.8 g, 73%), m.p. 79°-80° C. Found (Calc. for C18H17NO4) C 69.33 (69.45), H 5.51 (5.47), N 4.57 (4.50).

Aufarbeitung

  1. customevaporated to dryness in vacuo
  2. customthe residue recrystallized from hexane

Quellen und Nachweise

ORD-Eintrag
ord-e0729028dcb146fbaadc5cd8b27ca884
Quelldatensatz
uspto-grants-1990_06
Patentnummer
US04933330

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