反应详情

To a solution of N,N-diethyl-4-methoxy-2-methylbenzamide (1000 mg, 4.52 mmol) in THF (10 ml) at −78° C. was added dropwise tert-butyllithium 1.7 M in pentane (5316 μl, 9.04 mmol) and the solution was stirred for 0.5 h before addition of N,N-dimethylcyanamide (317 mg, 4.52 mmol) in THF (10 ml). The resulting solution was warmed to rt and stirred for 16 h. The reaction mixture was quenched with water, neutralized with 1 N HCl, and extracted with EtOAc. The organic layer was collected, dried over sodium sulfate, filtered, followed by removal of solvent under vacuum to give 3-(dimethylamino)-6-methoxyisoquinolin-1-ol (700 mg, 71% yield) which was carried to the next step without further purification. MS: MS m/z 219.1 (M++1).

1. customThe reaction mixture was quenched with water
2. extractionextracted with EtOAc
3. customThe organic layer was collected
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. customfollowed by removal of solvent under vacuum