反应详情

To a suspension of trans-4-amino-5,7-dichloro-2-methoxycarbonyl-1,2,3,4-tetrahydroquinoline hydrochloride (0.15 g, 0.482 mmol) in dichloromethane (15 ml) was added triethylamine (0.14 ml, 1.01 mmol) and the mixture was stirred under an atmosphere of nitrogen at room temperature until dissolution was complete. To this solution was added methanesulphonyl chloride (0.039 ml, 0.50 mmol) and the resulting mixture was stirred at room temperature under an atmosphere of nitrogen for 2.5 h. A further portion of methanesulphonyl chloride (0.039 ml, 0.50 mmol) was added and stirring was continued for 2 h after which time more triethylamine (0.07 ml, 0.50 mmol) was added and the mixture was stirred for a further 18 hours. The solvent was removed in vacuo and the residue obtained was partitioned between dilute citric acid solution (50 ml) and ethyl acetate (100 ml). The organic layer was washed with saturated sodium hydrogen carbonate (2×50 ml), brine (1×50 ml), dried (MgSO4) and evaporated to give the title compound as colourless crystals (0.14 g, m.p. 143°-146° C.); δ (250 MHz, CDCl3) 1.69 (1H, m, CHACHBHCCHD), 2.90 (1H, dm, J=13.6 Hz, CHACHBHCCHD), 3.17 (3H, s, --SO2CH3), 3.83 3H, s, CO2CH3), 4.26 (2H, m, CHACHBHCCHD) and CHNHSO2CH3), 4.84 (1H, m, CHACHBHCCHD), 6.57 (1H, d, J=1.9 Hz, 6-H or 8-H), 6.73 (1H, d, J=1.9 Hz, 6-H or 8-H); m/e 353 (M+), 198 (100% M-NHSO2CH3, CO2CH3 and H).

1. stirringthe resulting mixture was stirred at room temperature under an atmosphere of nitrogen for 2.5 h
2. stirringstirring
3. stirringthe mixture was stirred for a further 18 hours
4. customThe solvent was removed in vacuo
5. customthe residue obtained
6. customwas partitioned between dilute citric acid solution (50 ml) and ethyl acetate (100 ml)
7. washThe organic layer was washed with saturated sodium hydrogen carbonate (2×50 ml), brine (1×50 ml)
8. dry with materialdried (MgSO4)
9. customevaporated