Dimethylamine, hydrochloride → 7-Methoxy-N,N-dimethyl-2-oxo-1,2,3,4-tetrahydro-3-quinolinecarboxamide

Participants

Reaction Steps

To a solution of 1,2,3,4-tetrahydro-7-methoxy-2-oxo-3-quinolinecarboxylic acid (3.74 g), dimethylamine hydrochloride (3.44 g), 1-hydroxybenzotriazole (2.85 g), and triethylamine (8.5 g) in acetonitrile (400 ml) was added WSC (6.5 g). The reaction mixture was stirred at room temperature for 24 hr and concentrated. The residue was diluted with ethyl acetate and the organic layer was washed with 1 N aqueous hydrochloric acid, 10% aqueous potassium carbonate, and saturated aqueous sodium chloride, dried, and concentrated. The resulting crude crystals were recrystallized from ethyl acetate-hexane to obtain the titled compound (1.63 g).

Provenance & Evidence