Reaktion #2478286

Reaktionsgleichung

triethylamine

1-(4-bromo-phenyl)-cyclopropanecarboxylic acid

thionyl chloride

Methanesulfonamide

→

title compound

N-[1-(4-Bromo-phenyl)-cyclopropanecarbonyl]-methanesulfonamide

Lösungsmittel

CH2Cl2

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturthe reaction was refluxed for 4 hours
2. 2
   EinengenThe mixture was concentrated
3. 3
   workup.DISSOLUTIONthe crude material was dissolved in toluene (50 mL)
4. 4
   Temperaturthe reaction was refluxed for 3 hours
5. 5
   Waschenwashed with H2O (150 mL)
6. 6
   TrocknenThe organic layer was dried over MgSO4
7. 7
   Filtrationfiltered
8. 8
   Einengenconcentrated
9. 9
   Sonstigethe crude material was purified by silica gel chromatography

Vorschrift

To a solution of 1-(4-bromo-phenyl)-cyclopropanecarboxylic acid (5.0 g, 20.7 mmol) in toluene (30 mL) was slowly added thionyl chloride (17.7 mL, 243 mmol), and the reaction was refluxed for 4 hours. The mixture was concentrated, and the crude material was dissolved in toluene (50 mL). Methanesulfonamide (11.41 g, 120 mmol) was added, followed by triethylamine (15 mL), and the reaction was refluxed for 3 hours. After cooling to room temperature, the mixture was poured in CH2Cl2 (200 mL) and washed with H2O (150 mL). The organic layer was dried over MgSO4, filtered, and concentrated, and the crude material was purified by silica gel chromatography to give the title compound.

Quelle