Reaktion #2059303

Reaktionsgleichung

methyl chloroformate

(1S,7S)-1,7-dimethyl-9-nitro-1,7-diphenyl-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinoline

triethyl amine

→

methyl (1S,7S)-1,7-dimethyl-1,7-diphenyl-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-ylcarbamate

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe mixture was quenched with water (30 mL)
2. 2
   SonstigeThe residue was isolated in a typical aqueous workup
3. 3
   Sonstigepurified by MPLC (medium pressure liquid chromatography)

Vorschrift

To a solution (1S,7S)-1,7-dimethyl-9-nitro-1,7-diphenyl-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinoline (7), (115 mg, 0.31 mmol), in dichloromethane (15 mL) was added three equivalent of triethyl amine (0.129 mL, 0.93 mmol), followed by methyl chloroformate (0.031 mL, 0.406 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 methyl (1S,7S)-1,7-dimethyl-1,7-diphenyl-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-ylcarbamate (829), (69 mg 52%). 1H NMR (300 MHz, Acetone-d6) ppm 1.72 (s, 6H) 1.89-2.03 (m, 2H) 2.17-2.30 (m, 2H) 2.73-2.88 (m, 2H) 2.92-3.03 (m, 2H) 3.56 (s, 3H) 7.05-7.33 (m, 12H) 8.02 (br. s., 1H).

Quelle