反应详情

温度

0 °C

6-Methyl-5-nitroisoquinoline (32 g, 170 mmol) was dissolved in DCM (500 mL) and cooled in an ice-acetone bath to 0° C. 3-Chloroperoxybenzoic acid (49.9 g, 289 mmol) (73%) was added in portions while stirring the reaction mixture vigorously. After the addition, the reaction mixture was stirred at 0° C. for 4 h. Upon being warmed to RT, the reaction mixture was partitioned in DCM/NaOH (aq., 1 N). After multiple extractions, the organic layers were combined and washed with brine then dried over Na2SO4. Removal of the solvent in vacuo gave 6-methyl-5-nitroisoquinoline N-oxide as a yellow solid (23 g). MS (M+H)+205.

1. additionAfter the addition
2. stirringthe reaction mixture was stirred at 0° C. for 4 h
3. temperatureUpon being warmed to RT
4. customthe reaction mixture was partitioned in DCM/NaOH (aq., 1 N)
5. extractionAfter multiple extractions
6. washwashed with brine
7. dry with materialthen dried over Na2SO4
8. customRemoval of the solvent in vacuo