Water → HCID 21838184, compound

Participants

Reaction Steps

To a mixture of methyl 3-[(2-dimethylaminoethyl)carbamoyl]-5-hydroxybenzoate (11.9 g), 2,6-lutidine (6.25 ml) and 4-(dimethylamino)pyridine (0.84 g) in dichloromethane (240 ml) was added dropwise trifluoromethanesulfonic anhydride (9.02 ml) at -30° C. over 30 minutes. After stirring at room temperature for 4 hours, water (100 ml) was added to the reaction mixture. Two phases were separated and the aqueous layer was extracted with dichloromethane. The organic layers were combined, washed with water, dried over magnesium sulfate and evaporated in vacuo. The residue was triturated with diethyl ether and the crystalline was collected and washed with diethyl ether to give methyl 3-[(2-dimethylaminoethyl)carbamoyl]-5-trifluoromethylsulfonyloxybenzoate trifluoromethanesulfonate (16.02 g).

Provenance & Evidence