N-methyl-N-(trimethylsilyl)trifluoroacetamide → (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-3-(iodomethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

HRID 1085086

Reaktionsgleichung

Reaktionsgleichung von HRID 1085086
[NH2:1][C:2]1[S:3][CH:4]=[C:5](/[C:7](=[N:28]/[O:29][CH3:30])/[C:8]([NH:10][C@@H:11]2[C:26](=[O:27])[N:13]3[C:14]([C:23]([OH:25])=[O:24])=[C:15]([CH2:18]OC(=O)C)[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1.CN([Si](C)(C)C)C(=O)C(F)(F)F.[I:43][Si](C)(C)C>C(Cl)Cl>[NH2:1][C:2]1[S:3][CH:4]=[C:5](/[C:7](=[N:28]/[O:29][CH3:30])/[C:8]([NH:10][C@@H:11]2[C:26](=[O:27])[N:13]3[C:14]([C:23]([OH:25])=[O:24])=[C:15]([CH2:18][I:43])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1

Komponenten

5

Edukt 3

HCID 32510N-methyl-N-(trimethylsilyl)trifluoroacetamideHCID 85247Trimethylsilyl iodideHCID 5742673Cefotaxime

Produkt 1

HCID 14252931(6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-3-(iodomethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

7β-[(Z)-2-(2-Aminothiazol-4-yl)-2-methoxyiminoacetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid (240 mg) was suspended in methylene chloride (4 ml), followed by an addition of N-methyl-N-(trimethylsilyl) trifluoroacetamide (330 μl). The resulting mixture was stirred at room temperature for 30 minutes. After ice-cooling, iodotrimethylsilane (200 μl) was added to the solution, and the resulting mixture was stirred at room temperature for 15 minutes. The reaction mixture was concentrated under reduced pressure to obtain the silylated derivative of 7β-[(Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetamido]-3-iodomethyl-3-cephem-4-carboxylic acid.

Aufarbeitung

  1. temperatureAfter ice-cooling
  2. stirringthe resulting mixture was stirred at room temperature for 15 minutes
  3. concentrationThe reaction mixture was concentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-6ff337f010c44e52b0155213920ffa65
Quelldatensatz
uspto-grants-1991_04
Patentnummer
US05008260

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