Thionyl Chloride → HCID 10970229, compound
Reaction equation
[C:1]1([S:7]([O:10][C:11]2[CH:22]=[CH:21][C:14]3[S:15][CH:16]=[C:17]([C:18](O)=[O:19])[C:13]=3[CH:12]=2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.S(Cl)([Cl:25])=O>CN(C)C=O.C1(C)C=CC=CC=1>[C:1]1([S:7]([O:10][C:11]2[CH:22]=[CH:21][C:14]3[S:15][CH:16]=[C:17]([C:18]([Cl:25])=[O:19])[C:13]=3[CH:12]=2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1Participants
5
Reactant 2
Product 1
Reagents, catalysts & solvents 2
Procedure
5-Benzenesulfonyloxybenzo[b]thiophene-3-carboxylic acid (6) (5.582 g, 16.7 mmol) prepared in Examples above was refluxed for 1.5 hours with dimethylformamide (1 drop), thionyl chloride (3.57 ml, 50 mmol) and toluene (22 ml), and the solvent was removed under reduced pressure to provide 5.89 g of the title compound (10).