Formamide → 4-Chloro-phthalimide
Reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=O)[O:8][C:6](=[O:7])[C:5]2=[CH:11][CH:12]=1.O.C([NH2:16])=O>>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[O:8])[NH:16][C:6](=[O:7])[C:5]2=[CH:11][CH:12]=1Participants
4
Conditions
- Temperature
- 20 °C
Procedure
A solution of 10.0 g of 4-chlorophthalic anhydride in 24.6 g of formamide is heated at a temperature in the region of 120° C. with stirring for 3 hours and is then cooled to a temperature in the region of 20° C. and poured into 100 cm3 of water. After stirring for 30 minutes, the mixture is filtered and the precipitate is then dried under vacuum at a temperature in the region of 60° C. 10.4 g of 4-chlorophthalimide are thus obtained in the form of a solid melting at 171° C. Rf=0.07 (thin layer chromatography on silica gel, eluent: dichloromethane).