3-Nitrobenzenesulfonyl chloride → 4-(Tert-butoxycarbonylamino)phenethyl 3-nitro-benzenesulfonate

HRID 1595495Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1595495
[C:1]([O:5][C:6]([NH:8][C:9]1[CH:14]=[CH:13][C:12]([CH2:15][CH2:16][OH:17])=[CH:11][CH:10]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[N+:18]([C:21]1[CH:22]=[C:23]([S:27](Cl)(=[O:29])=[O:28])[CH:24]=[CH:25][CH:26]=1)([O-:20])=[O:19]>ClCCl>[N+:18]([C:21]1[CH:22]=[C:23]([S:27]([O:17][CH2:16][CH2:15][C:12]2[CH:11]=[CH:10][C:9]([NH:8][C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:7])=[CH:14][CH:13]=2)(=[O:29])=[O:28])[CH:24]=[CH:25][CH:26]=1)([O-:20])=[O:19]

Komponenten

4

Edukt 2

HCID 84763-Nitrobenzenesulfonyl chlorideHCID 11413715N-Boc-2-(4-aminophenyl)ethanol

Produkt 1

HCID 545354424-(Tert-butoxycarbonylamino)phenethyl 3-nitro-benzenesulfonateAusbeute 47 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
-25 °C

Versuchsvorschrift

2-[4-(tert-butoxycarbonylamino)phenyl]-1-ethanol dissolved in dichloromethane. The reaction mixture was cooled to −25° C. and 9.34 g (42 mmole) 3-nitrobenzenesulfonyl chloride was added in portions. The reaction mixture was poured on to icewater, the phases were separated and the organic phase was dried (sodium sulfate), filtered and the solvent was evaporated in vacuo. The residue was purified by chromatography on silica gel using dichloromethane as eluent to give 8.3 g (yield 47%) 4-(tert-butoxycarbonylamino)-phenethyl 3-nitro-benzenesulfonate as yellow crystals.

Aufarbeitung

  1. additionThe reaction mixture was poured on to icewater
  2. customthe phases were separated
  3. dry with materialthe organic phase was dried (sodium sulfate)
  4. filtrationfiltered
  5. customthe solvent was evaporated in vacuo
  6. customThe residue was purified by chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-79a2174653aa4d7689200bc2493fb569
Quelldatensatz
uspto-grants-2001_09
Patentnummer
US06288096B1

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