Methanol → (E)-2-(Hydroxyimino)-N-methyl-2-(2-phenoxyphenyl)acetamide

HRID 2081299Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2081299
C[O:2][C:3](=O)/[C:4](/[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[O:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)=[N:5]/[OH:6].CO.[CH3:23][NH2:24].O>C1(C)C=CC=CC=1>[OH:6]/[N:5]=[C:4](\[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[O:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)/[C:3]([NH:24][CH3:23])=[O:2]

Komponenten

6

Edukt 4

HCID 887MethanolHCID 962WaterHCID 6329Methylamine2×HCID 88276687methyl (2E)-2-hydroxyimino-2-(2-phenoxyphenyl)acetate

Produkt 1

HCID 9816878(E)-2-(Hydroxyimino)-N-methyl-2-(2-phenoxyphenyl)acetamideAusbeute 61 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

To crude E-α-hydroxyimino-2-phenoxyphenylacetic acid methyl ester (39.6 g, 0.0747 mole, purity: 51.2%) were added methanol (100 ml) and 40% aqueous solution of methylamine (15.45 g, 0.199 mole) and the mixture was stirred at room temperature for 15 hours. Then, 40% aqueous solution of methylamine (7.73 g, 0.0995 mole) was added to the mixture which was stirred in an oil bath at 70° C. for 6 hours. After completion of the reaction, water (200 ml) and toluene (100 ml) were added to the reaction mixture, which was stirred with ice cooling for one hour. The precipitated crystals were filtered off and recrystallized (methanol/toluene) to obtain E-2-hydroxyimino-N-methyl-2-(2-phenoxyphenyl)acetamide (12.31 g, yield: 60.1%) as colorless crystals (melting point: 183°-184.5° C.).

Aufarbeitung

  1. stirringwas stirred in an oil bath at 70° C. for 6 hours
  2. additionwere added to the reaction mixture, which
  3. stirringwas stirred with ice cooling for one hour
  4. filtrationThe precipitated crystals were filtered off
  5. customrecrystallized (methanol/toluene)

Quellen und Nachweise

ORD-Eintrag
ord-3339c7d043e846e18f0cb786a963554b
Quelldatensatz
uspto-grants-1993_02
Patentnummer
US05183921

Notizen zur Reaktion

Wird geladen…