反应详情

Step G4. A mixture of 2-(3-Bromo-5-chlorobenzyl)isoindoline-1,3-dione (5.1 g, 14.6 mmol) and hydrazine monohydrate (0.8 g, 16 mmol) in ethanol (150 mL) was refluxed for 4 hours. Upon cooling to room temperature, a white solid precipitated. The solid was filtered and washed with ethanol, then dried in vacuum. 1H NMR (DMSO-d6) showed that the white solid is a mixture of 3-bromo-5-chlorobenzylamine and 2,3-dihydrophthalazine-1,4-dione. This material was used in subsequent steps without further purification.

1. temperaturewas refluxed for 4 hours
2. customa white solid precipitated
3. filtrationThe solid was filtered
4. washwashed with ethanol
5. customdried in vacuum
6. additiona mixture of 3-bromo-5-chlorobenzylamine and 2,3-dihydrophthalazine-1,4-dione
7. customThis material was used in subsequent steps without further purification