4-Chloroquinoline → HCID 18918361, compound

Participants

Reaction Steps

To a solution of 4-chloroquinoline (3 g) in mixed xylenes (b.p. 137°-144° C.) (25 ml) was added 1 -benzylpiperazine (6.46 g). The mixture was heated to reflux with stirring for 20 hours then cooled to room temperature. The precipitate that formed was filtered and washed with xylene. To the combined filtrate and washings was added decolourising charcoal and the mixture was heated to reflux for 20 minutes, cooled and filtered through kieselguhr. The filtrate was evaporated to dryness to yield 1-benzyl-4-(4-quinolinyl)piperazine (4.55 g) as a yellow solid: m.p. 105°-106° C.; NMR (CDCl3) δ 2.75(4H,m), 3.26(4H,m), 3.66(2H,s) 6.84(1H,d), 7.35(5H,m), 7.45(1H,m), 7.65(1H,m), 8.03(2H,m), 8.73(1H,m); m/Z 304 (M+H)+.

Provenance & Evidence