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Water → ethyl 7-[N-(4-acetoxynonyl)methanesulfonamido]heptanoate

HRID 258600
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 258600
[H-].[Na+].[CH3:3][S:4]([NH:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][C:14]([O:16][CH2:17][CH3:18])=[O:15])(=[O:6])=[O:5].Cl[CH2:20][CH2:21][CH2:22][CH:23]([O:29][C:30](=[O:32])[CH3:31])[CH2:24][CH2:25][CH2:26][CH2:27][CH3:28].O>C1C=CC=CC=1.CN(C)C=O>[C:30]([O:29][CH:23]([CH2:24][CH2:25][CH2:26][CH2:27][CH3:28])[CH2:22][CH2:21][CH2:20][N:7]([CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][C:14]([O:16][CH2:17][CH3:18])=[O:15])[S:4]([CH3:3])(=[O:6])=[O:5])(=[O:32])[CH3:31]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 4

HCID 962WaterHCID 24758Sodium hydrideHCID 12150839Ethyl 7-(methanesulfonamido)heptanoateHCID 131047161-Chloro-4-acetoxynonane

Produkt 1

HCID 20327690ethyl 7-[N-(4-acetoxynonyl)methanesulfonamido]heptanoate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 241
Benzene
Lösungsmittel
HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

Sodium hydride (0.715 g., 0.0298 mole) is suspended in benzene (30 ml.) and dimethylformamide (30 ml.). Ethyl 7-(methanesulfonamido)heptanoate (6.8 g., 0.0271 mole) (Example O, Step 1) is added and the suspension heated on the steam bath for 15 minutes. After cooling to room temperature, 1-chloro-4-acetoxynonane (6.55 g., 0.0298 mole) (Example A, Step 3) is added over 15 minutes and the resulting solution heated on the steam bath for 20 hours. Then the reaction is poured into water (300 ml.) and extracted with ethyl acetate (3× 100 ml.). The organic layer is washed with brine (2× 50 ml.), dried over sodium sulfate then concentrated in vacuo to an oil which is purified by chromatography on silica gel. The silica gel is eluted with 3% methanol in chloroform and evaporation of the appropriate fraction affords ethyl 7-[N-(4-acetoxynonyl)methanesulfonamido]heptanoate. The yield is 6.0 g. (51%).

Aufarbeitung

  1. temperaturethe suspension heated on the steam bath for 15 minutes
  2. temperaturethe resulting solution heated on the steam bath for 20 hours
  3. extractionextracted with ethyl acetate (3× 100 ml.)
  4. washThe organic layer is washed with brine (2× 50 ml.)
  5. dry with materialdried over sodium sulfate
  6. concentrationthen concentrated in vacuo to an oil which
  7. customis purified by chromatography on silica gel
  8. washThe silica gel is eluted with 3% methanol in chloroform and evaporation of the appropriate fraction

Quellen und Nachweise

ORD-Eintrag
ord-c7841865984b4f8d9922f3b38090cba8
Quelldatensatz
uspto-grants-1977_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04033996

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