Oxalyl chloride → 3-Cyano-2,4,5-trifluoro-benzoyl chloride
Reaction equation
[C:1]([C:3]1[C:4]([F:14])=[C:5]([CH:9]=[C:10]([F:13])[C:11]=1[F:12])[C:6](O)=[O:7])#[N:2].C(Cl)(=O)C([Cl:18])=O>C(Cl)Cl.CN(C)C=O>[C:1]([C:3]1[C:4]([F:14])=[C:5]([CH:9]=[C:10]([F:13])[C:11]=1[F:12])[C:6]([Cl:18])=[O:7])#[N:2]Participants
5
Reactant 2
Product 1
Reagents, catalysts & solvents 2
Procedure
111 g of 3-cyano-2,4,5-trifluoro-benzoic acid and 84 g of oxalyl chloride are stirred at room temperature for 5 hours in 930 ml of dry methylene chloride with addition of a few drops of dimethylformamide. The methylene chloride is then stripped off and the residue is distilled in vacuo. 117.6 g of 3-cyano-2,4,5-trifluoro-benzoyl chloride are obtained as a yellow oil.
Workup
- distillationthe residue is distilled in vacuo
Sources & evidence
- ORD record
- ord-5be8186983b246bc851e4f962a31ac17
- Source dataset
- uspto-grants-2002_08
- Patent number
- US06432948B1
Reaction notes
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