Dimethylcarbamoyl Chloride → 3-(1,7-Diphenyl-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)-1,1-dimethylurea

Participants

Reaction Steps

To a solution 1,7-diphenyl-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-amine (Intermediate 4), (106 mg, 0.31 mmol) in dichloromethane (10 mL) was added triethyl amine (0.130 mL, 0.933 mmol) followed by dimethylcarbamic chloride (0.043 mL, 0.46 mmol), under argon at 0° C. The reaction mixture was then stirred at room temperature for overnight. The mixture was quenched with water (30 mL). The residue was isolated in a typical aqueous workup and purified by MPLC (medium pressure liquid chromatography) using silica gel column with 10 to 15% EtOAc:Hexane to give 3-(1,7-diphenyl-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)-1,1-dimethylurea, (405), (63 mg 49%). 1H NMR (300 MHz, CDCl3) ppm 2.01-2.16 (m, 2H) 2.20-2.37 (m, 2H) 2.85 (s, 6H) 3.00-3.15 (m, 4H) 4.12-4.25 (m, 2H) 5.78 (s, 1H) 6.62 (s, 2H) 7.10-7.22 (m, 5H) 7.23-7.34 (m, 5H)

Provenance & Evidence