Trifluoroacetic acid → 3-(chlorosulfonyl)-5-fluorobenzoic acid
Reaktionsgleichung
FC(F)(F)C(O)=O.[Cl:8][S:9]([C:12]1[CH:13]=[C:14]([CH:25]=[C:26]([F:28])[CH:27]=1)[C:15]([O:17]CC1C=CC=CC=1)=[O:16])(=[O:11])=[O:10]>>[Cl:8][S:9]([C:12]1[CH:13]=[C:14]([CH:25]=[C:26]([F:28])[CH:27]=1)[C:15]([OH:17])=[O:16])(=[O:10])=[O:11]Komponenten
3
Versuchsvorschrift
A trifluoroacetic acid (18 mL) solution of benzyl 3-(chlorosulfonyl)-5-fluorobenzoate (2.30 g) was stirred at 60° C. for 18 hours. The oily substance floating on the liquid surface was removed, and the solution part was decanted and evaporated under reduced pressure. Hexane was added to the residue, then this was sonicated for 10 minutes. The resulting solid was collected by filtration to obtain 3-(chlorosulfonyl)-5-fluorobenzoic acid (1.37 g). EI: 238
Aufarbeitung
- customwas removed
- customthe solution part was decanted
- customevaporated under reduced pressure
- additionHexane was added to the residue
- customthis was sonicated for 10 minutes
- filtrationThe resulting solid was collected by filtration
Quellen und Nachweise
- ORD-Eintrag
- ord-1918c54b18684f078d51ca859cc9e109
- Quelldatensatz
- uspto-grants-2011_06
- Patentnummer
- US07960562B2
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