Trifluoroacetic acid → (7-Cyclopropyl-4-methyl-2-oxo-1,2-dihydroquinolin-1-yl)acetaldehyde

Participants

Reaction Steps

To 0.10 g of 7-cyclopropyl-1-(1,3-dioxolan-2-ylmethyl)-4-methylquinolin-2(1H)-one, 3 mL of an 80% aqueous trifluoroacetic acid solution was added, the mixture was stirred at room temperature for 1 hour, and then stood still at room temperature for 13 hours. Thereto were added 3 mL of ethyl acetate and 4 mL of water, and the mixture was neutralized with an aqueous saturated sodium hydrogen carbonate solution. The organic layer was separated, washed with water and dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure to obtain 59 mg of a light brown oily substance, (7-cyclopropyl-4-methyl-2-oxo-1,2-dihydroquinolin-1-yl)acetaldehyde.

Provenance & Evidence