3-Aminoquinoline → HCID 66815687, compound

Participants

Reaction Steps

A solution of 4-(tert-butoxycarbonyl-methyl-amino)-benzoic acid (3.36 g, 13.4 mmol), O-benzotriazol-1-yl-N,N,N,N′N′-tetramethyluronium hexafluorophospate (HBTU) (5.22 g, 13.8 mmol) and N,N-diisopropylethyl (4.8 mL, 27.5 mmol) in acetonitrile (200 mL) was stirred at ambient temperature for ten minutes. Quinolin-3-ylamine (1.93 g, 13.4 mmol) was added, and the solution was heated at reflux for 20 hours. The solvent was evaporated in vacuo, and the residue was partitioned between 1 N aqueous sodium hydroxide and dichloromethane. The product was purified by flash silica gel chromatography, using 67% ethyl acetate in hexane as the eluant to give the product as a colorless solid, 4 g (80%). MS: m/z 378 (MH+). 1H NMR (CDCl3): 1.51 (s, 9 H), 3.29 (s, 3 H), 7.33 (d, 2 H), 7.53 (d of d, 1 H), 7.65 (d of d, 1 H), 7.85 (d, 2 H), 8.04 (d, 1 H), 8.70 (br s, 1 H) and 8.86-8.91 (m, 2 H).

Provenance & Evidence