反应详情

The compound prepared in stage B is hydrolyzed by refluxing for 3 hours in 6N HCl. After evaporation to dryness, the residue is dissolved in methanol, crystallized by addition of acetone, filtered and dried to give the expected compound.

1. customAfter evaporation to dryness
2. dissolutionthe residue is dissolved in methanol
3. customcrystallized by addition of acetone
4. filtrationfiltered
5. customdried