Oxalyl chloride → HCID 86757477, compound
Reaction equation
[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)/[C:7](=[CH:11]\[C:12]1[CH:17]=[CH:16][C:15]([S:18]([CH3:21])(=[O:20])=[O:19])=[CH:14][CH:13]=1)/[C:6]([CH3:22])=[C:5]2[CH2:23][C:24]([OH:26])=O.C(Cl)(=O)C([Cl:30])=O>ClCCl>[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)/[C:7](=[CH:11]\[C:12]1[CH:17]=[CH:16][C:15]([S:18]([CH3:21])(=[O:20])=[O:19])=[CH:14][CH:13]=1)/[C:6]([CH3:22])=[C:5]2[CH2:23][C:24]([Cl:30])=[O:26]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
(Z)-5-Fluoro-2-methyl-1-(p-methylsulfonylbenzylidene)-3-indenylacetic acid (20 g, 53.70 mmol) was suspended in dichloromethane (400 mL). Oxalylchloride (2M in CH2Cl2; 35 mL; 70 mmol) was added at room temperature. The reaction mixture was refluxed (24 h), and was evaporated to yield the title compound, which was used as such in the next step.