Dimethylformamide → 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.CN(C)C=O.S(Cl)([Cl:30])=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:30])=[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 3
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture of 5.582 g (16.7 mmol) of the above obtained 5-benzenesulfonyloxybenzo[b]thiophene-3-carboxylic acid (2), a drop of dimethylformamide, 3.57 ml (50 mmol) of thionyl chloride and 22 ml of toluene was refluxed for 1.5 hours and then concentrated under reduced pressure to give 5.89 g of the objective compound (3).