Hydrochloric Acid → 3-(1-Hydroxy-cyclobutyl)-benzenesulfonamide

HRID 1276526Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1276526
C([Li])CCC.Br[C:7]1[CH:8]=[C:9]([C:13]2([OH:17])[CH2:16][CH2:15][CH2:14]2)[CH:10]=[CH:11][CH:12]=1.C([O-])(=O)C.[Na+].[NH:23]([S:25](O)(=[O:27])=[O:26])O.Cl>CCCCCC.O1CCCC1>[OH:17][C:13]1([C:9]2[CH:8]=[C:7]([S:25]([NH2:23])(=[O:27])=[O:26])[CH:12]=[CH:11][CH:10]=2)[CH2:16][CH2:15][CH2:14]1

Komponenten

8

Edukt 5

HCID 313Hydrochloric AcidHCID 170246Hydroxysulfamic acidHCID 517045Sodium AcetateHCID 184615711-(3-Bromophenyl)-cyclobutanolHCID 178418339Butyllithium

Produkt 1

HCID 184617223-(1-Hydroxy-cyclobutyl)-benzenesulfonamideAusbeute 4,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8058HexaneLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

A 1.6M solution of n-butyllithium (8 ml, 12.8 mmol) in hexane was added to a solution of 1-(3-bromo-phenyl)-cyclobutanol (1.44 grams, 6.4 mmol) in tetrahydrofuran at -78° C. After 30 minutes, at the reaction was allowed to warm to 0° C. Sulfur dioxide was bubbled into the reaction mixture and stirred for an additional 30 minutes. The tetrahydrofuran was evaporated and an aqueous solution of sodium acetate (4.1 grams, 50 mmol) and of hydroxylamine-sulfonic acid (1.85 grams, 16 mmol) was added. After stirring at room temperature for 2 hours, the reaction was acidified with 2N hydrochloric acid then extracted with ethyl acetate. The ethyl acetate was dried over sodium sulfate and evaporated. The residue was purified on silica gel with dichloromethane/ether to give 70 mg of the titled compound.

Aufarbeitung

  1. customSulfur dioxide was bubbled into the reaction mixture
  2. customThe tetrahydrofuran was evaporated
  3. stirringAfter stirring at room temperature for 2 hours
  4. extractionthen extracted with ethyl acetate
  5. dry with materialThe ethyl acetate was dried over sodium sulfate
  6. customevaporated
  7. customThe residue was purified on silica gel with dichloromethane/ether

Quellen und Nachweise

ORD-Eintrag
ord-bbde736dcbda4f6aba0bc2c0a9868c16
Quelldatensatz
uspto-grants-2000_12
Patentnummer
US06166064

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