反应详情

温度

150 °C

To a stirred solution of 6,7-dimethoxy-1-propylisoquinolin-3-ol RBO 35142 (173 mg, 0.638 mmol) in toluene (10 mL) in a 100 mL round-bottomed flask equipped with a magnetic stirrer was added 3-(chloromethyl)-N,N,6-trimethylquinolin-2-amine hydrochloride RBO 35154 (158 mg, 0.638 mmol) and the mixture was stirred at 150° C. for 1.5 h. After cooling to RT, the volatiles were removed and the residue was taken back in CH2Cl2 (20 mL). This solution was washed with water (3×10 mL), brine (10 mL), dried over Na2SO4, filtered, and concentrated at 40° C. under vacuum. Purification by column chromatography (SiO2, eluent CH2Cl2:7 N NH3 solution in MeOH=100:0 to 95:5) gave after evaporation 20.2 mg of 4-((2-(dimethylamino)-6-methylquinolin-3-yl)methyl)-6,7-dimethoxy-1-propylisoquinolin-3-ol as a yellow solid. The free base was dissolved in MeOH (2 mL) and converted into salt by addition of a 0.19 M HCl solution in MeOH (0.525 mL). The reaction mixture was stirred for 5 min at RT then concentrated at 40° C. under vacuum to afford 4-(2-dimethylamino-6-methyl-quinolin-3-ylmethyl)-6,7-dimethoxy-1-propyl-soquinolin-3-ol dihydrochloride 36 as a yellow solid (22.2 mg, 6.7% yield).

1. temperatureAfter cooling to RT
2. customthe volatiles were removed
3. washThis solution was washed with water (3×10 mL), brine (10 mL)
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated at 40° C. under vacuum
7. customPurification by column chromatography (SiO2, eluent CH2Cl2:7 N NH3 solution in MeOH=100:0 to 95:5)
8. customgave
9. customafter evaporation 20.2 mg of 4-((2-(dimethylamino)-6-methylquinolin-3-yl)methyl)-6,7-dimethoxy-1-propylisoquinolin-3-ol as a yellow solid
10. dissolutionThe free base was dissolved in MeOH (2 mL)
11. additionconverted into salt by addition of a 0.19 M HCl solution in MeOH (0.525 mL)
12. stirringThe reaction mixture was stirred for 5 min at RT
13. concentrationthen concentrated at 40° C. under vacuum