反应详情

To a rapidly stirred solution of 2-[3-bromo-2-(tert-butyl-dimethyl-silanyloxymethyl)-phenyl]-6-cyclopropyl-3-hydroxy-3,4-dihydro-2H-isoquinolin-1-one (3.52 g, 7.00 mmol) and triethylamine (4.0 mL, 29 mmol) in 50 mL of anhydrous CH2Cl2 was added 0.85 mL of methanesulfonyl chloride. Purged the flask with nitrogen and stirred at room temperature overnight. Added 25 mL of CH2Cl2 and 50 mL of water and separated phases. Washed the organic phase with 50 ml brine. Dried the solution over MgSO4 and concentrated in vacuo. Purified the residue by flash chromatography (gradient elution, 0 to 50% EtOAc/hexane) to obtain 2-[3-Bromo-2-(tert-butyl-dimethyl-silanyloxymethyl)-phenyl]-6-cyclopropyl-2H-isoquinolin-1-one as an amber resin (2.90 g, 5.99 mmol). MS (ESI) 484, 486 (M+H)+.

1. customPurged the flask with nitrogen
2. additionAdded 25 mL of CH2Cl2 and 50 mL of water
3. customseparated phases
4. washWashed the organic phase with 50 ml brine
5. dry with materialDried the solution over MgSO4
6. concentrationconcentrated in vacuo
7. customPurified the residue
8. washby flash chromatography (gradient elution, 0 to 50% EtOAc/hexane)