Aniline → 2-(Phenylamino)quinoline-8-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

NaH (60% w/w in mineral oil; 0.549 g, 13.73 mmol) was added to a mixture of 2-chloroquinoline-8-carboxylic acid (181a, 0.95 g, 4.58 mmol) and aniline (0.834 ml, 9.15 mmol) in THF (11 ml) at 0° C.; the reaction was heated to 50° C. for 2 h. The mixture was diluted with 75 ml of Et2O and washed with 1 N NaOH. The organic layer was separated, and the aq. layer was acidified to ˜pH 1 with 5 N HCl and extracted 4 times with 75 ml of EtOAc. All organic extracts were then combined dried over Na2SO4, and concentrated to give 2-(phenylamino)quinoline-8-carboxylic acid (35% yield) as a light-brown solid. MS (ESI, pos. ion) m/z: 265.2 (M+1).

Provenance & Evidence