Dichloromethane → [[3-[3,5-Difluoro-4-[4-(tert-butoxycarbonyl)-1-piperazinyl]phenyl]-2-oxo-5-oxazolidinyl]methyl]-p-toluenesulfonate

HRID 266711

Reaktionsgleichung

Reaktionsgleichung von HRID 266711
[F:1][C:2]1[CH:3]=[C:4]([N:22]2[CH2:26][CH:25]([CH2:27][OH:28])[O:24][C:23]2=[O:29])[CH:5]=[C:6]([F:21])[C:7]=1[N:8]1[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][CH2:9]1.[C:30]1([CH3:40])[CH:35]=[CH:34][C:33]([S:36](Cl)(=[O:38])=[O:37])=[CH:32][CH:31]=1.C(Cl)Cl>N1C=CC=CC=1.CN(C)C1C=CN=CC=1>[F:21][C:6]1[CH:5]=[C:4]([N:22]2[CH2:26][CH:25]([CH2:27][O:28][S:36]([C:33]3[CH:34]=[CH:35][C:30]([CH3:40])=[CH:31][CH:32]=3)(=[O:38])=[O:37])[O:24][C:23]2=[O:29])[CH:3]=[C:2]([F:1])[C:7]=1[N:8]1[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][CH2:9]1

Komponenten

6

Edukt 3

HCID 6344DichloromethaneHCID 73974-Toluenesulfonyl chloride2×HCID 21462612[3-[3,5-Difluoro-4-[4-(tert-butoxycarbonyl)-1-piperazinyl]phenyl]-2-oxo-5-oxazolidinyl]methanol

Produkt 1

HCID 86749743[[3-[3,5-Difluoro-4-[4-(tert-butoxycarbonyl)-1-piperazinyl]phenyl]-2-oxo-5-oxazolidinyl]methyl]-p-toluenesulfonateAusbeute 90 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 1049PyridineLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

The [3-[3,5-difluoro-4-[4-(tert-butoxycarbonyl)-1-piperazinyl]phenyl]-2-oxo-5-oxazolidinyl]methanol (24.2 g, 59 mmol) was dissolved in pyridine (110 mL) and then cooled to 0° C. (ice bath). Freshly recrystalized p-toluenesulfonyl chloride (13.4 g, 70 mmol) of was added and the reaction was allowed to stir at 0° C. for 2.5 hours under N2. The flask was then stoppered and stored in the refrigeratior (5° C.) overnight. The reaction mixture became a pale pink slurry. TLC revealed that some alcohol still remained. The reaction mixture was treated with additional p-toluenesulfonyl chloride (1.12 g, 5.85 mmol), catalytic 4-(dimethylamino)pyridine, and 20 mL of dry CH2Cl2 to facilitate stirring. After 4 hours at 0° C., the reaction was found to be complete by TLC (5% MeOH/CH2Cl3, UV short wave). The mixture was added to 750 mL ice water and the precipitated product isolated via suction filtration, washing it with both water (1 L) and ether (500 mL). After drying in vacuo, 29.921 g (90%) of the title compound was obtained as white solid with mp 150.5°-151.5° C.

Aufarbeitung

  1. customstored in the refrigeratior (5° C.) overnight
  2. stirringto facilitate stirring
  3. waitAfter 4 hours at 0° C.
  4. customthe precipitated product isolated via suction filtration
  5. washwashing it with both water (1 L) and ether (500 mL)
  6. customAfter drying in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-9e10c53532c64f27bdab6c5f7e11a160
Quelldatensatz
uspto-grants-1997_07
Patentnummer
US05652238

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